derek.holloway
7502bf64a4
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28 lines
724 B
C
28 lines
724 B
C
// RUN: %clang_hwasan -g %s -o %t && not %run %t 2>&1 | FileCheck %s
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// Dynamic allocation of stack objects does not affect FP, so the backend should
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// still be using FP-relative debug info locations that we can use to find stack
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// objects.
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// Stack histories are currently not recorded on x86.
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// XFAIL: target=x86_64{{.*}}
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__attribute((noinline))
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char *buggy(int b) {
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char c[64];
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char *volatile p = c;
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if (b) {
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p = __builtin_alloca(64);
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p = c;
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}
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return p;
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}
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int main() {
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char *p = buggy(1);
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// CHECK: Potentially referenced stack objects:
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// CHECK-NEXT: use-after-scope
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// CHECK-NEXT: 0x{{.*}} is located 0 bytes inside a 64-byte local variable c [0x{{.*}},0x{{.*}}) in buggy
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p[0] = 0;
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}
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