mirror of
https://github.com/Gericom/teak-llvm.git
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c2c21ef9d2
Summary: Some OpenMP clauses rely on the values of the variables. If the variable is not initialized and used in OpenMP clauses that depend on the variables values, it should be reported that the uninitialized variable is used in the OpenMP clause expression. This patch adds initial processing for uninitialized variables in OpenMP constructs. Currently, it checks for use of the uninitialized variables in the structured blocks. Reviewers: NoQ, Szelethus, dcoughlin, xazax.hun, a.sidorin, george.karpenkov, szepet Subscribers: rnkovacs, guansong, jfb, jdoerfert, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D64356 llvm-svn: 365786
380 lines
17 KiB
C
380 lines
17 KiB
C
// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 %s -Wuninitialized
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// RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 %s -Wuninitialized
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void xxx(int argc) {
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int x; // expected-note {{initialize the variable 'x' to silence this warning}}
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#pragma omp atomic read
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argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
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}
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int foo() {
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L1:
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foo();
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#pragma omp atomic
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// expected-error@+2 {{the statement for 'atomic' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected an expression statement}}
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{
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foo();
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goto L1; // expected-error {{use of undeclared label 'L1'}}
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}
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goto L2; // expected-error {{use of undeclared label 'L2'}}
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#pragma omp atomic
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// expected-error@+2 {{the statement for 'atomic' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected an expression statement}}
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{
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foo();
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L2:
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foo();
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}
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return 0;
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}
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struct S {
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int a;
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};
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int readint() {
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int a = 0, b = 0;
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// Test for atomic read
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#pragma omp atomic read
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// expected-error@+2 {{the statement for 'atomic read' must be an expression statement of form 'v = x;', where v and x are both lvalue expressions with scalar type}}
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// expected-note@+1 {{expected an expression statement}}
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;
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#pragma omp atomic read
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// expected-error@+2 {{the statement for 'atomic read' must be an expression statement of form 'v = x;', where v and x are both lvalue expressions with scalar type}}
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// expected-note@+1 {{expected built-in assignment operator}}
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foo();
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#pragma omp atomic read
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// expected-error@+2 {{the statement for 'atomic read' must be an expression statement of form 'v = x;', where v and x are both lvalue expressions with scalar type}}
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// expected-note@+1 {{expected built-in assignment operator}}
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a += b;
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#pragma omp atomic read
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// expected-error@+2 {{the statement for 'atomic read' must be an expression statement of form 'v = x;', where v and x are both lvalue expressions with scalar type}}
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// expected-note@+1 {{expected lvalue expression}}
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a = 0;
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#pragma omp atomic read
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a = b;
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// expected-error@+1 {{directive '#pragma omp atomic' cannot contain more than one 'read' clause}}
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#pragma omp atomic read read
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a = b;
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return 0;
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}
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int readS() {
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struct S a, b;
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// expected-error@+1 {{directive '#pragma omp atomic' cannot contain more than one 'read' clause}} expected-error@+1 {{unexpected OpenMP clause 'allocate' in directive '#pragma omp atomic'}}
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#pragma omp atomic read read allocate(a)
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// expected-error@+2 {{the statement for 'atomic read' must be an expression statement of form 'v = x;', where v and x are both lvalue expressions with scalar type}}
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// expected-note@+1 {{expected expression of scalar type}}
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a = b;
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return a.a;
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}
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int writeint() {
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int a = 0, b = 0;
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// Test for atomic write
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#pragma omp atomic write
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// expected-error@+2 {{the statement for 'atomic write' must be an expression statement of form 'x = expr;', where x is a lvalue expression with scalar type}}
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// expected-note@+1 {{expected an expression statement}}
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;
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#pragma omp atomic write
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// expected-error@+2 {{the statement for 'atomic write' must be an expression statement of form 'x = expr;', where x is a lvalue expression with scalar type}}
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// expected-note@+1 {{expected built-in assignment operator}}
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foo();
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#pragma omp atomic write
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// expected-error@+2 {{the statement for 'atomic write' must be an expression statement of form 'x = expr;', where x is a lvalue expression with scalar type}}
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// expected-note@+1 {{expected built-in assignment operator}}
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a += b;
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#pragma omp atomic write
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a = 0;
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#pragma omp atomic write
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a = b;
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// expected-error@+1 {{directive '#pragma omp atomic' cannot contain more than one 'write' clause}}
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#pragma omp atomic write write
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a = b;
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return 0;
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}
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int writeS() {
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struct S a, b;
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// expected-error@+1 {{directive '#pragma omp atomic' cannot contain more than one 'write' clause}}
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#pragma omp atomic write write
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// expected-error@+2 {{the statement for 'atomic write' must be an expression statement of form 'x = expr;', where x is a lvalue expression with scalar type}}
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// expected-note@+1 {{expected expression of scalar type}}
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a = b;
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return a.a;
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}
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int updateint() {
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int a = 0, b = 0;
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// Test for atomic update
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#pragma omp atomic update
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// expected-error@+2 {{the statement for 'atomic update' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected an expression statement}}
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;
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#pragma omp atomic
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// expected-error@+2 {{the statement for 'atomic' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected built-in binary or unary operator}}
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foo();
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#pragma omp atomic
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// expected-error@+2 {{the statement for 'atomic' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected built-in binary operator}}
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a = b;
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#pragma omp atomic update
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// expected-error@+2 {{the statement for 'atomic update' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected one of '+', '*', '-', '/', '&', '^', '|', '<<', or '>>' built-in operations}}
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a = b || a;
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#pragma omp atomic update
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// expected-error@+2 {{the statement for 'atomic update' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected one of '+', '*', '-', '/', '&', '^', '|', '<<', or '>>' built-in operations}}
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a = a && b;
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#pragma omp atomic update
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// expected-error@+2 {{the statement for 'atomic update' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected in right hand side of expression}}
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a = (float)a + b;
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#pragma omp atomic
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// expected-error@+2 {{the statement for 'atomic' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected in right hand side of expression}}
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a = 2 * b;
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#pragma omp atomic
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// expected-error@+2 {{the statement for 'atomic' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x', where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected in right hand side of expression}}
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a = b + *&a;
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#pragma omp atomic update
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*&a = *&a + 2;
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#pragma omp atomic update
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a++;
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#pragma omp atomic
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++a;
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#pragma omp atomic update
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a--;
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#pragma omp atomic
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--a;
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#pragma omp atomic update
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a += b;
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#pragma omp atomic
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a %= b;
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#pragma omp atomic update
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a *= b;
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#pragma omp atomic
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a -= b;
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#pragma omp atomic update
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a /= b;
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#pragma omp atomic
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a &= b;
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#pragma omp atomic update
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a ^= b;
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#pragma omp atomic
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a |= b;
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#pragma omp atomic update
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a <<= b;
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#pragma omp atomic
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a >>= b;
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#pragma omp atomic update
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a = b + a;
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#pragma omp atomic
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a = a * b;
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#pragma omp atomic update
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a = b - a;
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#pragma omp atomic
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a = a / b;
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#pragma omp atomic update
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a = b & a;
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#pragma omp atomic
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a = a ^ b;
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#pragma omp atomic update
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a = b | a;
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#pragma omp atomic
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a = a << b;
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#pragma omp atomic
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a = b >> a;
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// expected-error@+1 {{directive '#pragma omp atomic' cannot contain more than one 'update' clause}}
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#pragma omp atomic update update
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a /= b;
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return 0;
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}
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int captureint() {
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int a = 0, b = 0, c = 0;
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// Test for atomic capture
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be a compound statement of form '{v = x; x binop= expr;}', '{x binop= expr; v = x;}', '{v = x; x = x binop expr;}', '{v = x; x = expr binop x;}', '{x = x binop expr; v = x;}', '{x = expr binop x; v = x;}' or '{v = x; x = expr;}', '{v = x; x++;}', '{v = x; ++x;}', '{++x; v = x;}', '{x++; v = x;}', '{v = x; x--;}', '{v = x; --x;}', '{--x; v = x;}', '{x--; v = x;}' where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected compound statement}}
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;
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be an expression statement of form 'v = ++x;', 'v = --x;', 'v = x++;', 'v = x--;', 'v = x binop= expr;', 'v = x = x binop expr' or 'v = x = expr binop x', where x and v are both l-value expressions with scalar type}}
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// expected-note@+1 {{expected assignment expression}}
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foo();
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be an expression statement of form 'v = ++x;', 'v = --x;', 'v = x++;', 'v = x--;', 'v = x binop= expr;', 'v = x = x binop expr' or 'v = x = expr binop x', where x and v are both l-value expressions with scalar type}}
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// expected-note@+1 {{expected built-in binary or unary operator}}
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a = b;
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be an expression statement of form 'v = ++x;', 'v = --x;', 'v = x++;', 'v = x--;', 'v = x binop= expr;', 'v = x = x binop expr' or 'v = x = expr binop x', where x and v are both l-value expressions with scalar type}}
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// expected-note@+1 {{expected assignment expression}}
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a = b || a;
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be an expression statement of form 'v = ++x;', 'v = --x;', 'v = x++;', 'v = x--;', 'v = x binop= expr;', 'v = x = x binop expr' or 'v = x = expr binop x', where x and v are both l-value expressions with scalar type}}
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// expected-note@+1 {{expected one of '+', '*', '-', '/', '&', '^', '|', '<<', or '>>' built-in operations}}
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b = a = a && b;
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be an expression statement of form 'v = ++x;', 'v = --x;', 'v = x++;', 'v = x--;', 'v = x binop= expr;', 'v = x = x binop expr' or 'v = x = expr binop x', where x and v are both l-value expressions with scalar type}}
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// expected-note@+1 {{expected assignment expression}}
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a = (float)a + b;
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be an expression statement of form 'v = ++x;', 'v = --x;', 'v = x++;', 'v = x--;', 'v = x binop= expr;', 'v = x = x binop expr' or 'v = x = expr binop x', where x and v are both l-value expressions with scalar type}}
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// expected-note@+1 {{expected assignment expression}}
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a = 2 * b;
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be an expression statement of form 'v = ++x;', 'v = --x;', 'v = x++;', 'v = x--;', 'v = x binop= expr;', 'v = x = x binop expr' or 'v = x = expr binop x', where x and v are both l-value expressions with scalar type}}
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// expected-note@+1 {{expected assignment expression}}
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a = b + *&a;
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be a compound statement of form '{v = x; x binop= expr;}', '{x binop= expr; v = x;}', '{v = x; x = x binop expr;}', '{v = x; x = expr binop x;}', '{x = x binop expr; v = x;}', '{x = expr binop x; v = x;}' or '{v = x; x = expr;}', '{v = x; x++;}', '{v = x; ++x;}', '{++x; v = x;}', '{x++; v = x;}', '{v = x; x--;}', '{v = x; --x;}', '{--x; v = x;}', '{x--; v = x;}' where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected exactly two expression statements}}
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{ a = b; }
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be a compound statement of form '{v = x; x binop= expr;}', '{x binop= expr; v = x;}', '{v = x; x = x binop expr;}', '{v = x; x = expr binop x;}', '{x = x binop expr; v = x;}', '{x = expr binop x; v = x;}' or '{v = x; x = expr;}', '{v = x; x++;}', '{v = x; ++x;}', '{++x; v = x;}', '{x++; v = x;}', '{v = x; x--;}', '{v = x; --x;}', '{--x; v = x;}', '{x--; v = x;}' where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected exactly two expression statements}}
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{}
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be a compound statement of form '{v = x; x binop= expr;}', '{x binop= expr; v = x;}', '{v = x; x = x binop expr;}', '{v = x; x = expr binop x;}', '{x = x binop expr; v = x;}', '{x = expr binop x; v = x;}' or '{v = x; x = expr;}', '{v = x; x++;}', '{v = x; ++x;}', '{++x; v = x;}', '{x++; v = x;}', '{v = x; x--;}', '{v = x; --x;}', '{--x; v = x;}', '{x--; v = x;}' where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected in right hand side of the first expression}}
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{a = b;a = b;}
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be a compound statement of form '{v = x; x binop= expr;}', '{x binop= expr; v = x;}', '{v = x; x = x binop expr;}', '{v = x; x = expr binop x;}', '{x = x binop expr; v = x;}', '{x = expr binop x; v = x;}' or '{v = x; x = expr;}', '{v = x; x++;}', '{v = x; ++x;}', '{++x; v = x;}', '{x++; v = x;}', '{v = x; x--;}', '{v = x; --x;}', '{--x; v = x;}', '{x--; v = x;}' where x is an l-value expression with scalar type}}
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// expected-note@+1 {{expected in right hand side of the first expression}}
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{a = b; a = b || a;}
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#pragma omp atomic capture
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{b = a; a = a && b;}
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be an expression statement of form 'v = ++x;', 'v = --x;', 'v = x++;', 'v = x--;', 'v = x binop= expr;', 'v = x = x binop expr' or 'v = x = expr binop x', where x and v are both l-value expressions with scalar type}}
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// expected-note@+1 {{expected in right hand side of expression}}
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b = a = (float)a + b;
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be an expression statement of form 'v = ++x;', 'v = --x;', 'v = x++;', 'v = x--;', 'v = x binop= expr;', 'v = x = x binop expr' or 'v = x = expr binop x', where x and v are both l-value expressions with scalar type}}
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// expected-note@+1 {{expected in right hand side of expression}}
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b = a = 2 * b;
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#pragma omp atomic capture
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// expected-error@+2 {{the statement for 'atomic capture' must be an expression statement of form 'v = ++x;', 'v = --x;', 'v = x++;', 'v = x--;', 'v = x binop= expr;', 'v = x = x binop expr' or 'v = x = expr binop x', where x and v are both l-value expressions with scalar type}}
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// expected-note@+1 {{expected in right hand side of expression}}
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b = a = b + *&a;
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#pragma omp atomic capture
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c = *&a = *&a + 2;
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#pragma omp atomic capture
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c = a++;
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#pragma omp atomic capture
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c = ++a;
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#pragma omp atomic capture
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c = a--;
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#pragma omp atomic capture
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c = --a;
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#pragma omp atomic capture
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c = a += b;
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#pragma omp atomic capture
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c = a %= b;
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#pragma omp atomic capture
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c = a *= b;
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#pragma omp atomic capture
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c = a -= b;
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#pragma omp atomic capture
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c = a /= b;
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#pragma omp atomic capture
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c = a &= b;
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#pragma omp atomic capture
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c = a ^= b;
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#pragma omp atomic capture
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c = a |= b;
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#pragma omp atomic capture
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c = a <<= b;
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#pragma omp atomic capture
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c = a >>= b;
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#pragma omp atomic capture
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c = a = b + a;
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#pragma omp atomic capture
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c = a = a * b;
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#pragma omp atomic capture
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c = a = b - a;
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#pragma omp atomic capture
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c = a = a / b;
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#pragma omp atomic capture
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c = a = b & a;
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#pragma omp atomic capture
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c = a = a ^ b;
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#pragma omp atomic capture
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c = a = b | a;
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#pragma omp atomic capture
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c = a = a << b;
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#pragma omp atomic capture
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c = a = b >> a;
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#pragma omp atomic capture
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{ c = *&a; *&a = *&a + 2;}
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#pragma omp atomic capture
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{ *&a = *&a + 2; c = *&a;}
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#pragma omp atomic capture
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{c = a; a++;}
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#pragma omp atomic capture
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{c = a; (a)++;}
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#pragma omp atomic capture
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{++a;c = a;}
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#pragma omp atomic capture
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{c = a;a--;}
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#pragma omp atomic capture
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{--a;c = a;}
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#pragma omp atomic capture
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{c = a; a += b;}
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#pragma omp atomic capture
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{c = a; (a) += b;}
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#pragma omp atomic capture
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{a %= b; c = a;}
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#pragma omp atomic capture
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{c = a; a *= b;}
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#pragma omp atomic capture
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{a -= b;c = a;}
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#pragma omp atomic capture
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{c = a; a /= b;}
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#pragma omp atomic capture
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{a &= b; c = a;}
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#pragma omp atomic capture
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{c = a; a ^= b;}
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#pragma omp atomic capture
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{a |= b; c = a;}
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#pragma omp atomic capture
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{c = a; a <<= b;}
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#pragma omp atomic capture
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{a >>= b; c = a;}
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#pragma omp atomic capture
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{c = a; a = b + a;}
|
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#pragma omp atomic capture
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{a = a * b; c = a;}
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#pragma omp atomic capture
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{c = a; a = b - a;}
|
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#pragma omp atomic capture
|
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{a = a / b; c = a;}
|
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#pragma omp atomic capture
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{c = a; a = b & a;}
|
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#pragma omp atomic capture
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{a = a ^ b; c = a;}
|
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#pragma omp atomic capture
|
|
{c = a; a = b | a;}
|
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#pragma omp atomic capture
|
|
{a = a << b; c = a;}
|
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#pragma omp atomic capture
|
|
{c = a; a = b >> a;}
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#pragma omp atomic capture
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|
{c = a; a = foo();}
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// expected-error@+1 {{directive '#pragma omp atomic' cannot contain more than one 'capture' clause}}
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#pragma omp atomic capture capture
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b = a /= b;
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|
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return 0;
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}
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