diff options
Diffstat (limited to 'compiler-rt/test/msan/realloc-large-origin.cpp')
| -rw-r--r-- | compiler-rt/test/msan/realloc-large-origin.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/compiler-rt/test/msan/realloc-large-origin.cpp b/compiler-rt/test/msan/realloc-large-origin.cpp new file mode 100644 index 00000000000..b19fb60c804 --- /dev/null +++ b/compiler-rt/test/msan/realloc-large-origin.cpp @@ -0,0 +1,31 @@ +// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O0 %s -o %t && not %run %t >%t.out 2>&1 +// RUN: FileCheck --check-prefix=CHECK --check-prefix=CHECK-%short-stack %s < %t.out +// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O2 %s -o %t && not %run %t >%t.out 2>&1 +// RUN: FileCheck --check-prefix=CHECK --check-prefix=CHECK-%short-stack %s < %t.out + +// This is a regression test: there used to be broken "stored to memory at" +// stacks with +// in __msan_memcpy +// in __msan::MsanReallocate +// and nothing below that. + +#include <stdlib.h> +int main(int argc, char **argv) { + char *p = (char *)malloc(100); + p = (char *)realloc(p, 10000); + char x = p[50]; + free(p); + return x; + +// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value +// CHECK: {{#0 0x.* in main .*realloc-large-origin.cpp:}}[[@LINE-3]] + +// CHECK: Uninitialized value was stored to memory at +// CHECK-FULL-STACK: {{#0 0x.* in .*realloc}} +// CHECK-FULL-STACK: {{#1 0x.* in main .*realloc-large-origin.cpp:}}[[@LINE-10]] +// CHECK-SHORT-STACK: {{#0 0x.* in .*realloc}} + +// CHECK: Uninitialized value was created by a heap allocation +// CHECK: {{#0 0x.* in .*malloc}} +// CHECK: {{#1 0x.* in main .*realloc-large-origin.cpp:}}[[@LINE-16]] +} |
