// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -O3 %s -o %t && \
|
// RUN: MSAN_OPTIONS=store_context_size=1 not %run %t 2>&1 | FileCheck %s
|
|
// Test that stack trace for the intermediate store is not empty.
|
|
// CHECK: MemorySanitizer: use-of-uninitialized-value
|
// CHECK: #0 {{.*}} in main
|
|
// CHECK: Uninitialized value was stored to memory at
|
// CHECK: #0 {{.*}} in fn_g
|
// CHECK-NOT: #1
|
|
// CHECK: Uninitialized value was created by an allocation of 'z' in the stack frame of function 'main'
|
// CHECK: #0 {{.*}} in main
|
|
#include <stdio.h>
|
|
volatile int x;
|
|
__attribute__((noinline))
|
void fn_g(int a) {
|
x = a;
|
}
|
|
__attribute__((noinline))
|
void fn_f(int a) {
|
fn_g(a);
|
}
|
|
int main(int argc, char *argv[]) {
|
int volatile z;
|
fn_f(z);
|
return x;
|
}
|
