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Revert "[lsan] Do not check for leaks in the forked process" 

Users need leak reports in forks.

This reverts commit r334036.

llvm-svn: 340758
This commit is contained in:
Vitaly Buka 2018-08-27 17:26:28 +00:00
parent 4be11c0585
commit d833acdb5f
2 changed files with 0 additions and 44 deletions
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9
compiler-rt/lib/lsan/lsan_common.cc
View File

@ -100,8 +100,6 @@ static SuppressionContext *GetSuppressionContext() {
static InternalMmapVector<RootRegion> *root_regions;
static uptr initialized_for_pid;
InternalMmapVector<RootRegion> const *GetRootRegions() { return root_regions; }
void InitializeRootRegions() {
@ -115,7 +113,6 @@ const char *MaybeCallLsanDefaultOptions() {
}
void InitCommonLsan() {
initialized_for_pid = internal_getpid();
InitializeRootRegions();
if (common_flags()->detect_leaks) {
// Initialization which can fail or print warnings should only be done if
@ -571,12 +568,6 @@ static void CheckForLeaksCallback(const SuspendedThreadsList &suspended_threads,
static bool CheckForLeaks() {
if (&__lsan_is_turned_off && __lsan_is_turned_off())
return false;
if (initialized_for_pid != internal_getpid()) {
// If process was forked and it had threads we fail to detect references
// from other threads.
Report("WARNING: LeakSanitizer is disabled in forked process.\n");
return false;
}
EnsureMainThreadIDIsCorrect();
CheckForLeaksParam param;
param.success = false;

35
compiler-rt/test/lsan/TestCases/Linux/fork_with_threads.cc
View File

@ -1,35 +0,0 @@
// Test forked process does not run lsan.
// RUN: %clangxx_lsan %s -o %t && %run %t 2>&1 | FileCheck %s
#include <pthread.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <unistd.h>
static pthread_barrier_t barrier;
// CHECK-NOT: SUMMARY: {{(Leak|Address)}}Sanitizer:
static void *thread_func(void *arg) {
void *buffer = malloc(1337);
pthread_barrier_wait(&barrier);
for (;;)
pthread_yield();
return 0;
}
int main() {
pthread_barrier_init(&barrier, 0, 2);
pthread_t tid;
int res = pthread_create(&tid, 0, thread_func, 0);
pthread_barrier_wait(&barrier);
pthread_barrier_destroy(&barrier);
pid_t pid = fork();
if (pid > 0) {
int status = 0;
waitpid(pid, &status, 0);
}
return 0;
}
// CHECK: WARNING: LeakSanitizer is disabled in forked process