maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[LSan] Print more helpful error message if LSan crashes during leak detection. 

llvm-svn: 260717
This commit is contained in:
Alexey Samsonov 2016-02-12 20:20:51 +00:00
parent 7b3ef05a37
commit eb649bcfb9
3 changed files with 8 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
compiler-rt/lib/lsan/lsan_common.cc
View File

@ -446,6 +446,9 @@ static bool CheckForLeaks() {
if (!param.success) {
Report("LeakSanitizer has encountered a fatal error.\n");
Report(
"HINT: For debugging, try setting environment variable "
"LSAN_OPTIONS=verbosity=1:log_threads=1\n");
Die();
}
param.leak_report.ApplySuppressions();

4
compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cc
View File

@ -229,8 +229,8 @@ static void TracerThreadDieCallback() {
// Signal handler to wake up suspended threads when the tracer thread dies.
static void TracerThreadSignalHandler(int signum, void *siginfo, void *uctx) {
SignalContext ctx = SignalContext::Create(siginfo, uctx);
VPrintf(1, "Tracer caught signal %d: addr=0x%zx pc=0x%zx sp=0x%zx\n",
signum, ctx.addr, ctx.pc, ctx.sp);
Printf("Tracer caught signal %d: addr=0x%zx pc=0x%zx sp=0x%zx\n", signum,
ctx.addr, ctx.pc, ctx.sp);
ThreadSuspender *inst = thread_suspender_instance;
if (inst) {
if (signum == SIGABRT)

6
compiler-rt/test/asan/TestCases/Linux/leak_check_segv.cc
View File

@ -1,5 +1,5 @@
// Test that SIGSEGV during leak checking does not crash the process.
// RUN: %clangxx_asan -O1 %s -o %t && LSAN_OPTIONS="verbosity=1" not %run %t 2>&1
// RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
// REQUIRES: leak-detection
#include <stdlib.h>
#include <stdio.h>
@ -11,7 +11,7 @@ char data[10 * 1024 * 1024];
int main() {
void *p = malloc(10 * 1024 * 1024);
// surprise-surprise!
mprotect((void*)(((unsigned long)p + 4095) & ~4095), 16 * 1024, PROT_NONE);
mprotect((void*)(((unsigned long)p + 4095) & ~4095), 16 * 1024, PROT_NONE);
mprotect((void*)(((unsigned long)data + 4095) & ~4095), 16 * 1024, PROT_NONE);
__lsan_do_leak_check();
fprintf(stderr, "DONE\n");
@ -19,5 +19,5 @@ int main() {
// CHECK: Tracer caught signal 11
// CHECK: LeakSanitizer has encountered a fatal error
// CHECK: HINT: For debugging, try setting {{.*}} LSAN_OPTIONS
// CHECK-NOT: DONE