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