forked from OSchip/llvm-project
23 lines
709 B
C++
23 lines
709 B
C++
// RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %t 2>&1 | FileCheck %s
|
|
// RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %s -o %t && not %t 2>&1 | FileCheck %s
|
|
// RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %t 2>&1 | FileCheck %s
|
|
|
|
// Test condition origin propagation through "select" IR instruction.
|
|
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
|
|
__attribute__((noinline))
|
|
int *max_by_ptr(int *a, int *b) {
|
|
return *a < *b ? b : a;
|
|
}
|
|
|
|
int main(void) {
|
|
int x;
|
|
int *volatile px = &x;
|
|
int y = 43;
|
|
int *p = max_by_ptr(px, &y);
|
|
// CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main'
|
|
return *p;
|
|
}
|