| 1 | // RUN: %clang_hwasan -g %s -o %t && not %run %t 2>&1 | FileCheck %s |
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| 2 | |
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| 3 | // Dynamic allocation of stack objects does not affect FP, so the backend should |
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| 4 | // still be using FP-relative debug info locations that we can use to find stack |
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| 5 | // objects. |
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| 6 | |
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| 7 | // Stack histories are currently not recorded on x86. |
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| 8 | // XFAIL: target=x86_64{{.*}} |
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| 9 | |
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| 10 | __attribute((noinline)) |
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| 11 | char *buggy(int b) { |
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| 12 | char c[64]; |
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| 13 | char *volatile p = c; |
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| 14 | if (b) { |
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| 15 | p = __builtin_alloca(64); |
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| 16 | p = c; |
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| 17 | } |
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| 18 | return p; |
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| 19 | } |
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| 20 | |
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| 21 | int main() { |
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| 22 | char *p = buggy(b: 1); |
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| 23 | // CHECK: Potentially referenced stack objects: |
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| 24 | // CHECK-NEXT: use-after-scope |
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| 25 | // CHECK-NEXT: 0x{{.*}} is located 0 bytes inside a 64-byte local variable c [0x{{.*}},0x{{.*}}) in buggy |
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| 26 | p[0] = 0; |
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| 27 | } |
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| 28 | |
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