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Differential D134683 Diff 463057 compiler-rt/test/msan/chained_origin.cpp

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compiler-rt/test/msan/chained_origin.cpp

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// RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DHEAP=1 -O3 %s -o %t && \ // RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DHEAP=1 -O3 %s -o %t && \
// RUN: not %run %t >%t.out 2>&1 // RUN: not %run %t >%t.out 2>&1
// RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-HEAP < %t.out // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-HEAP < %t.out
#include <stdio.h> #include <stdio.h>
volatile int x, y; volatile int x, y;
__attribute__((noinline)) __attribute__((noinline)) void fn_g(int &a) { x = a; }
void fn_g(int a) {
x = a;
}
__attribute__((noinline)) __attribute__((noinline)) void fn_f(int &a) { fn_g(a); }
void fn_f(int a) {
fn_g(a);
}
__attribute__((noinline)) __attribute__((noinline)) void fn_h() { y = x; }
void fn_h() {
y = x;
}
int main(int argc, char *argv[]) { int main(int argc, char *argv[]) {
#ifdef HEAP #ifdef HEAP
int * volatile zz = new int; int * volatile zz = new int;
int z = *zz; int z = *zz;
#else #else
int volatile z; int volatile z;
#endif #endif
fn_f(z); fn_f((int &)z);
fn_h(); fn_h();
return y; return y;
} }
// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
// CHECK: {{#0 .* in main.*chained_origin.cpp:}}[[@LINE-4]] // CHECK: {{#0 .* in main.*chained_origin.cpp:}}[[@LINE-4]]
// CHECK: Uninitialized value was stored to memory at // CHECK: Uninitialized value was stored to memory at
// CHECK-FULL-STACK: {{#0 .* in fn_h.*chained_origin.cpp:}}[[@LINE-19]] // CHECK-FULL-STACK: {{#0 .* in fn_h.*chained_origin.cpp:}}[[@LINE-18]]
// CHECK-FULL-STACK: {{#1 .* in main.*chained_origin.cpp:}}[[@LINE-9]] // CHECK-FULL-STACK: {{#1 .* in main.*chained_origin.cpp:}}[[@LINE-9]]
// CHECK-SHORT-STACK: {{#0 .* in fn_h.*chained_origin.cpp:}}[[@LINE-21]] // CHECK-SHORT-STACK: {{#0 .* in fn_h.*chained_origin.cpp:}}[[@LINE-21]]
// CHECK: Uninitialized value was stored to memory at // CHECK: Uninitialized value was stored to memory at
// CHECK-FULL-STACK: {{#0 .* in fn_g.*chained_origin.cpp:}}[[@LINE-34]] // CHECK-FULL-STACK: {{#0 .* in fn_g.*chained_origin.cpp:}}[[@LINE-27]]
// CHECK-FULL-STACK: {{#1 .* in fn_f.*chained_origin.cpp:}}[[@LINE-30]] // CHECK-FULL-STACK: {{#1 .* in fn_f.*chained_origin.cpp:}}[[@LINE-26]]
// CHECK-FULL-STACK: {{#2 .* in main.*chained_origin.cpp:}}[[@LINE-16]] // CHECK-FULL-STACK: {{#2 .* in main.*chained_origin.cpp:}}[[@LINE-16]]
// CHECK-SHORT-STACK: {{#0 .* in fn_g.*chained_origin.cpp:}}[[@LINE-37]] // CHECK-SHORT-STACK: {{#0 .* in fn_g.*chained_origin.cpp:}}[[@LINE-37]]
// CHECK-STACK: Uninitialized value was created by an allocation of 'z' in the stack frame // CHECK-STACK: Uninitialized value was created by an allocation of 'z' in the stack frame
// CHECK-STACK: {{#0 .* in main.*chained_origin.cpp:}}[[@LINE-22]] // CHECK-STACK: {{#0 .* in main.*chained_origin.cpp:}}[[@LINE-22]]
// CHECK-HEAP: Uninitialized value was created by a heap allocation // CHECK-HEAP: Uninitialized value was created by a heap allocation
// CHECK-HEAP: {{#1 .* in main.*chained_origin.cpp:}}[[@LINE-28]] // CHECK-HEAP: {{#1 .* in main.*chained_origin.cpp:}}[[@LINE-28]]