| // RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DOFFSET=0 -O3 %s -o %t && \ |
| // RUN: not %run %t >%t.out 2>&1 |
| // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z1 --check-prefix=CHECK-%short-stack < %t.out |
| |
| // RUN: %clangxx_msan -fsanitize-memory-track-origins=2 -DOFFSET=10 -O3 %s -o %t && \ |
| // RUN: not %run %t >%t.out 2>&1 |
| // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z2 --check-prefix=CHECK-%short-stack < %t.out |
| |
| // RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DOFFSET=0 -O3 %s -o %t && \ |
| // RUN: not %run %t >%t.out 2>&1 |
| // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z1 --check-prefix=CHECK-%short-stack < %t.out |
| |
| // RUN: %clangxx_msan -mllvm -msan-instrumentation-with-call-threshold=0 -fsanitize-memory-track-origins=2 -DOFFSET=10 -O3 %s -o %t && \ |
| // RUN: not %run %t >%t.out 2>&1 |
| // RUN: FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-Z2 --check-prefix=CHECK-%short-stack < %t.out |
| |
| #include <stdio.h> |
| #include <string.h> |
| |
| int xx[10000]; |
| volatile int idx = 30; |
| |
| __attribute__((noinline)) void fn_g(int a, int b) { |
| xx[idx + OFFSET] = OFFSET == 0 ? a : b; |
| } |
| |
| __attribute__((noinline)) void fn_f(int a, int b) { |
| fn_g(a, b); |
| } |
| |
| __attribute__((noinline)) void fn_h() { |
| memmove(&xx[25], &xx, 7500); |
| } |
| |
| int main(int argc, char *argv[]) { |
| int volatile z1; |
| int volatile z2; |
| fn_f(z1, z2); |
| fn_h(); |
| return xx[25 + idx + OFFSET]; |
| } |
| |
| // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value |
| // CHECK: {{#0 .* in main .*chained_origin_memmove.cpp:}}[[@LINE-4]] |
| |
| // CHECK: Uninitialized value was stored to memory at |
| // CHECK-FULL-STACK: {{#1 .* in fn_h.*chained_origin_memmove.cpp:}}[[@LINE-15]] |
| // CHECK-SHORT-STACK: {{#0 .* in __msan_memmove.*msan_interceptors.cpp:}} |
| |
| // CHECK: Uninitialized value was stored to memory at |
| // CHECK-FULL-STACK: {{#0 .* in fn_g.*chained_origin_memmove.cpp:}}[[@LINE-27]] |
| // CHECK-FULL-STACK: {{#1 .* in fn_f.*chained_origin_memmove.cpp:}}[[@LINE-24]] |
| // CHECK-SHORT-STACK: {{#0 .* in fn_g.*chained_origin_memmove.cpp:}}[[@LINE-29]] |
| |
| // 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_memmove.cpp:}}[[@LINE-22]] |