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da8a3b903b
So, we now reject that. We also warn for any external-linkage global variable named main in C, because it results in undefined behavior. PR: 24309 Differential Revision: http://reviews.llvm.org/D11658 Reviewed by: rsmith llvm-svn: 245051
57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST1
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// RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST2
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// RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST3
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// RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST4
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// RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST5
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// RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST6
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// RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST7
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// RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST8
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// RUN: %clang_cc1 -fsyntax-only -verify %s -DTEST9 -ffreestanding
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#if TEST1
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int main; // expected-warning{{variable named 'main' with external linkage has undefined behavior}}
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#elif TEST2
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extern int main; // expected-warning{{variable named 'main' with external linkage has undefined behavior}}
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#elif TEST3
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// expected-no-diagnostics
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void x() {
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static int main;
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}
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#elif TEST4
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void x() {
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extern int main; // expected-warning{{variable named 'main' with external linkage has undefined behavior}}
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}
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#elif TEST5
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// expected-no-diagnostics
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void x() {
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int main;
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}
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#elif TEST6
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// expected-no-diagnostics
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static int main;
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#elif TEST7
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// expected-no-diagnostics
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void x() {
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auto int main;
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}
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#elif TEST8
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// expected-no-diagnostics
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void x() {
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register int main;
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}
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#elif TEST9
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// expected-no-diagnostics
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int main;
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#else
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#error Unknown Test
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#endif
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