49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
// Build a library with origin tracking and an executable w/o origin tracking.
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// Test that origin tracking is enabled at runtime.
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// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -DBUILD_SO -fPIC -shared -o %t-so.so
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// RUN: %clangxx_msan -O0 %s %t-so.so -o %t && not %run %t 2>&1 | FileCheck %s
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#ifdef BUILD_SO
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#include <stdlib.h>
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extern "C" {
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void my_access(int *p) {
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volatile int tmp;
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// Force initialize-ness check.
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if (*p)
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tmp = 1;
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}
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void *my_alloc(unsigned sz) {
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return malloc(sz);
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}
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} // extern "C"
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#else // BUILD_SO
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#include <stdlib.h>
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extern "C" {
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void my_access(int *p);
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void *my_alloc(unsigned sz);
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}
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int main(int argc, char **argv) {
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int *x = (int *)my_alloc(sizeof(int));
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my_access(x);
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delete x;
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// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
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// CHECK: {{#0 0x.* in my_access .*dso-origin.cc:}}
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// CHECK: {{#1 0x.* in main .*dso-origin.cc:}}[[@LINE-5]]
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// CHECK: Uninitialized value was created by a heap allocation
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// CHECK: {{#0 0x.* in .*malloc}}
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// CHECK: {{#1 0x.* in my_alloc .*dso-origin.cc:}}
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// CHECK: {{#2 0x.* in main .*dso-origin.cc:}}[[@LINE-10]]
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// CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*dso-origin.cc:.* my_access}}
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return 0;
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}
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#endif // BUILD_SO
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