22 lines
799 B
C++
22 lines
799 B
C++
// Check that 8-byte store updates origin for the full store range.
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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 < %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 < %t.out
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#include <sanitizer/msan_interface.h>
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int main() {
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uint64_t *volatile p = new uint64_t;
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uint64_t *volatile q = new uint64_t;
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*p = *q;
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char *z = (char *)p;
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return z[6];
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// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
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// CHECK: in main {{.*}}origin-store-long.cpp:[[@LINE-2]]
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// CHECK: Uninitialized value was created by a heap allocation
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// CHECK: in main {{.*}}origin-store-long.cpp:[[@LINE-8]]
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}
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