nmusgrave updated this revision to Diff 30970. nmusgrave added a comment. - simplified test cases
http://reviews.llvm.org/D11614 Files: test/msan/dtor-tail-call.cc Index: test/msan/dtor-tail-call.cc =================================================================== --- /dev/null +++ test/msan/dtor-tail-call.cc @@ -0,0 +1,42 @@ +// 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 < %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 <sanitizer/msan_interface.h> +#include <assert.h> +#include <stdio.h> +#include <new> + +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}}[[@LINE-32]] + + // CHECK-ORIGINS: Memory was marked as uninitialized + // CHECK-ORIGINS: {{#0 0x.* in __sanitizer_dtor_callback}} + // CHECK-ORIGINS: {{#1 0x.* in Simple::~Simple()}} + + // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*main}} +}
Index: test/msan/dtor-tail-call.cc =================================================================== --- /dev/null +++ test/msan/dtor-tail-call.cc @@ -0,0 +1,42 @@ +// 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 < %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 <sanitizer/msan_interface.h> +#include <assert.h> +#include <stdio.h> +#include <new> + +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}}[[@LINE-32]] + + // CHECK-ORIGINS: Memory was marked as uninitialized + // CHECK-ORIGINS: {{#0 0x.* in __sanitizer_dtor_callback}} + // CHECK-ORIGINS: {{#1 0x.* in Simple::~Simple()}} + + // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*main}} +}
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