[compiler-rt] r252805 - [asan] Remove a flaky test.

[Evgeniy Stepanov via llvm-commits]

Author: eugenis
Date: Wed Nov 11 15:37:12 2015
New Revision: 252805

URL: http://llvm.org/viewvc/llvm-project?rev=252805&view=rev
Log:
[asan] Remove a flaky test.

Removed:
    compiler-rt/trunk/test/asan/TestCases/Linux/halt_on_error-signals.c

Removed: compiler-rt/trunk/test/asan/TestCases/Linux/halt_on_error-signals.c
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/asan/TestCases/Linux/halt_on_error-signals.c?rev=252804&view=auto
==============================================================================
--- compiler-rt/trunk/test/asan/TestCases/Linux/halt_on_error-signals.c (original)
+++ compiler-rt/trunk/test/asan/TestCases/Linux/halt_on_error-signals.c (removed)
@@ -1,109 +0,0 @@
-// Test interaction of Asan recovery mode with asynch signals.
-//
-// RUN: %clang_asan -fsanitize-recover=address -pthread %s -o %t
-//
-// RUN: rm -f %t.log
-// RUN: env ASAN_OPTIONS=halt_on_error=false %run %t 1000 >%t.log 2>&1 || true
-// RUN: FileCheck %s < %t.log
-// Collision will almost always get triggered but we still need to check the unlikely case:
-// RUN: FileCheck --check-prefix=CHECK-COLLISION %s < %t.log || FileCheck --check-prefix=CHECK-NO-COLLISION %s < %t.log
-//
-// REQUIRES: stable-runtime
-
-#define _POSIX_C_SOURCE 200112  // rand_r
-#define _SVID_SOURCE 1  // SA_NODEFER
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <pthread.h>
-#include <time.h>
-#include <signal.h>
-
-#include <sanitizer/asan_interface.h>
-
-void random_sleep(unsigned *seed) {
-  struct timespec delay = { 0, rand_r(seed) * 1000000 };
-  nanosleep(&delay, 0);
-}
-
-volatile char bad[2] = {1, };
-
-void error() {
-  // CHECK-COLLISION: AddressSanitizer: nested bug in the same thread, aborting
-  // CHECK: AddressSanitizer: use-after-poison
-  volatile int idx = 0;
-  bad[idx] = 0;
-}
-
-size_t niter = 10;
-pthread_t sender_tid, receiver_tid;
-
-void *sender(void *arg) {
-  unsigned seed = 0;
-  for (size_t i = 0; i < niter; ++i) {
-    random_sleep(&seed);
-    pthread_kill(receiver_tid, SIGUSR1);
-  }
-  return 0;
-}
-
-void handler(int sig) {
-  // Expect error collisions here
-  error();
-}
-
-void *receiver(void *arg) {
-  unsigned seed = 1;
-  for (size_t i = 0; i < niter; ++i) {
-    random_sleep(&seed);
-    // And here
-    error();
-  }
-  return 0;
-}
-
-int main(int argc, char **argv) {
-  if (argc != 2) {
-    fprintf(stderr, "Syntax: %s niter\n", argv[0]);
-    exit(1);
-  }
-
-  niter = (size_t)strtoul(argv[1], 0, 0);
-
-  struct sigaction sa;
-  memset(&sa, 0, sizeof(sa));
-  sa.sa_handler = handler;
-  sa.sa_flags = SA_NODEFER; // Enable nested handlers to add more stress
-  if (0 != sigaction(SIGUSR1, &sa, 0)) {
-    fprintf(stderr, "Failed to set sighandler\n");
-    exit(1);
-  }
-
-  __asan_poison_memory_region(&bad, sizeof(bad)); 
-
-  if (0 != pthread_create(&receiver_tid, 0, receiver, 0)) {
-    fprintf(stderr, "Failed to start receiver thread\n");
-    exit(1);
-  }
-
-  if (0 != pthread_create(&sender_tid, 0, sender, 0)) {
-    fprintf(stderr, "Failed to start sender thread\n");
-    exit(1);
-  }
-
-  if (0 != pthread_join(receiver_tid, 0)) {
-    fprintf(stderr, "Failed to wait receiver thread\n");
-    exit(1);
-  }
-
-  if (0 != pthread_join(sender_tid, 0)) {
-    fprintf(stderr, "Failed to wait sender thread\n");
-    exit(1);
-  }
-
-  // CHECK-NO-COLLISION: All threads terminated
-  printf("All threads terminated\n");
-
-  return 0;
-}