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llvm-project/compiler-rt/test/msan/origin-store-long.cc

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[msan] Update origin for the entire destination range on memory store. Previously we always stored 4 bytes of origin at the destination address even for 8-byte (and longer) stores. This should fix rare missing, or incorrect, origin stacks in MSan reports. llvm-svn: 226658
2015-01-21 21:21:31 +08:00
// Check that 8-byte store updates origin for the full store range.
[MSan] Remove explicit -m64 from RUN lines. Target-specific flags should usually be configured by CMake/lit. llvm-svn: 230999
2015-03-03 03:34:27 +08:00
// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
[msan] Update origin for the entire destination range on memory store. Previously we always stored 4 bytes of origin at the destination address even for 8-byte (and longer) stores. This should fix rare missing, or incorrect, origin stacks in MSan reports. llvm-svn: 226658
2015-01-21 21:21:31 +08:00
// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
[MSan] Remove explicit -m64 from RUN lines. Target-specific flags should usually be configured by CMake/lit. llvm-svn: 230999
2015-03-03 03:34:27 +08:00
// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
[msan] Update origin for the entire destination range on memory store. Previously we always stored 4 bytes of origin at the destination address even for 8-byte (and longer) stores. This should fix rare missing, or incorrect, origin stacks in MSan reports. llvm-svn: 226658
2015-01-21 21:21:31 +08:00
// RUN: FileCheck %s < %t.out && FileCheck %s < %t.out
#include <sanitizer/msan_interface.h>
int main() {
uint64_t *volatile p = new uint64_t;
uint64_t *volatile q = new uint64_t;
*p = *q;
char *z = (char *)p;
return z[6];
// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK: in main {{.*}}origin-store-long.cc:[[@LINE-2]]
// CHECK: Uninitialized value was created by a heap allocation
// CHECK: in main {{.*}}origin-store-long.cc:[[@LINE-8]]
}