057cabd997
This work is being done to reduce the size of MSAN with track origins binary. Builds upon: https://reviews.llvm.org/D131205 Reviewed By: vitalybuka Differential Revision: https://reviews.llvm.org/D131415
35 lines
754 B
C++
35 lines
754 B
C++
// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O3 %s -o %t && \
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// RUN: MSAN_OPTIONS=store_context_size=1 not %run %t 2>&1 | FileCheck %s
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// Test that stack trace for the intermediate store is not empty.
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// CHECK: MemorySanitizer: use-of-uninitialized-value
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// CHECK: #0 {{.*}} in main
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// CHECK: Uninitialized value was stored to memory at
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// CHECK: #0 {{.*}} in fn_g
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// CHECK-NOT: #1
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// CHECK: Uninitialized value was created by an allocation of 'z' in the stack frame
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// CHECK: #0 {{.*}} in main
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#include <stdio.h>
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volatile int x;
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__attribute__((noinline))
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void fn_g(int a) {
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x = a;
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}
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__attribute__((noinline))
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void fn_f(int a) {
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fn_g(a);
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}
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int main(int argc, char *argv[]) {
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int volatile z;
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fn_f(z);
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return x;
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}
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