forked from OSchip/llvm-project
62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -m64 -DOFFSET=0 -O3 %s -o %t && \
|
|
// RUN: not %run %t >%t.out 2>&1
|
|
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z1 < %t.out
|
|
|
|
// RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DOFFSET=10 -m64 -O3 %s -o %t && \
|
|
// RUN: not %run %t >%t.out 2>&1
|
|
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z2 < %t.out
|
|
|
|
|
|
// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -m64 -DOFFSET=0 -O3 %s -o %t && \
|
|
// RUN: not %run %t >%t.out 2>&1
|
|
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z1 < %t.out
|
|
|
|
// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DOFFSET=10 -m64 -O3 %s -o %t && \
|
|
// RUN: not %run %t >%t.out 2>&1
|
|
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z2 < %t.out
|
|
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
int xx[10000];
|
|
int yy[10000];
|
|
volatile int idx = 30;
|
|
|
|
__attribute__((noinline))
|
|
void fn_g(int a, int b) {
|
|
xx[idx] = a; xx[idx + 10] = b;
|
|
}
|
|
|
|
__attribute__((noinline))
|
|
void fn_f(int a, int b) {
|
|
fn_g(a, b);
|
|
}
|
|
|
|
__attribute__((noinline))
|
|
void fn_h() {
|
|
memcpy(&yy, &xx, sizeof(xx));
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
int volatile z1;
|
|
int volatile z2;
|
|
fn_f(z1, z2);
|
|
fn_h();
|
|
return yy[idx + OFFSET];
|
|
}
|
|
|
|
// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
|
|
// CHECK: {{#0 .* in main .*chained_origin_memcpy.cc:46}}
|
|
|
|
// CHECK: Uninitialized value was stored to memory at
|
|
// CHECK: {{#1 .* in fn_h.*chained_origin_memcpy.cc:38}}
|
|
|
|
// CHECK: Uninitialized value was stored to memory at
|
|
// CHECK: {{#0 .* in fn_g.*chained_origin_memcpy.cc:28}}
|
|
// CHECK: {{#1 .* in fn_f.*chained_origin_memcpy.cc:33}}
|
|
|
|
// CHECK-Z1: Uninitialized value was created by an allocation of 'z1' in the stack frame of function 'main'
|
|
// CHECK-Z2: Uninitialized value was created by an allocation of 'z2' in the stack frame of function 'main'
|
|
// CHECK: {{#0 .* in main.*chained_origin_memcpy.cc:41}}
|