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42 lines
1.7 KiB
42 lines
1.7 KiB
4 months ago
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// Test that on the second entry to a function the origins are still right.
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// RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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// RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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// RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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// RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
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// RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
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#include <stdlib.h>
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extern "C"
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int f(int depth) {
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if (depth) return f(depth - 1);
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int x;
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int *volatile p = &x;
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return *p;
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}
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int main(int argc, char **argv) {
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return f(1);
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// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
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// CHECK: {{#0 0x.* in main .*stack-origin2.cc:}}[[@LINE-2]]
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// CHECK-ORIGINS: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'f'
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// CHECK-ORIGINS: {{#0 0x.* in f .*stack-origin2.cc:}}[[@LINE-14]]
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// CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*stack-origin2.cc:.* main}}
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}
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