Index: test/msan/dtor-tail-call.cc =================================================================== --- /dev/null +++ test/msan/dtor-tail-call.cc @@ -0,0 +1,46 @@ +// RUN: %clangxx_msan %s -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 not %run %t >%t.out 2>&1 +// RUN: FileCheck %s < %t.out + +// RUN: %clangxx_msan %s -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 not %run %t >%t.out 2>&1 +// RUN: FileCheck %s --check-prefix=CHECK-OPT < %t.out + +// RUN: %clangxx_msan %s -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -fsanitize-memory-track-origins -o %t && MSAN_OPTIONS=poison_in_dtor=1 not %run %t >%t.out 2>&1 +// RUN: FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out + +#include +#include +#include +#include + +struct Simple { + int x_; + Simple() { + x_ = 5; + } + ~Simple() { + x_ += 1; + } +}; + +int main() { + unsigned long buf[1]; + assert(sizeof(Simple) <= sizeof(buf)); + + Simple *s = new(&buf) Simple(); + s->~Simple(); + + return s->x_; + + // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value + // CHECK: {{#0 0x.* in main .*dtor-tail-call.cc:32}} + + // CHECK-OPT: WARNING: MemorySanitizer: use-of-uninitialized-value + // CHECK-OPT: {{#0 0x.* in main .*dtor-tail-call.cc:32}} + + // CHECK-ORIGINS: Memory was marked as uninitialized + // CHECK-ORIGINS: {{#0 0x.* in __sanitizer_dtor_callback .*msan_interceptors.cc:1009}} + // CHECK-ORIGINS: {{#1 0x.* in Simple::~Simple()}} + + // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*main}} + // CHECK-OPT: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*main}} +}