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6b53e224eb
check using the ubsan runtime) and -fsanitize=local-bounds (for the middle-end check which inserts traps). Remove -fsanitize=local-bounds from -fsanitize=undefined. It does not produce useful diagnostics and has false positives (PR17635), and is not a good compromise position between UBSan's checks and ASan's checks. Map -fbounds-checking to -fsanitize=local-bounds to restore Clang's historical behavior for that flag. llvm-svn: 193205
30 lines
692 B
C
30 lines
692 B
C
// RUN: %clang_cc1 -fsanitize=local-bounds -emit-llvm -triple x86_64-apple-darwin10 %s -o - | FileCheck %s
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// RUN: %clang_cc1 -fsanitize=array-bounds -O -fsanitize-undefined-trap-on-error -emit-llvm -triple x86_64-apple-darwin10 -DNO_DYNAMIC %s -o - | FileCheck %s
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// CHECK-LABEL: @f
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double f(int b, int i) {
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double a[b];
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// CHECK: call {{.*}} @llvm.trap
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return a[i];
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}
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// CHECK-LABEL: @f2
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void f2() {
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// everything is constant; no trap possible
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// CHECK-NOT: call {{.*}} @llvm.trap
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int a[2];
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a[1] = 42;
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#ifndef NO_DYNAMIC
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short *b = malloc(64);
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b[5] = *a + a[1] + 2;
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#endif
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}
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// CHECK-LABEL: @f3
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void f3() {
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int a[1];
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// CHECK: call {{.*}} @llvm.trap
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a[2] = 1;
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}
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