Merge pull request #3544 from ctiller/backtrace-on-crash

Enable backtraces on C tests

1 files changed, 44 insertions, 0 deletions

diff --git a/test/core/util/test_config.c b/test/core/util/test_config.c
index 168b98fe63..c3d356c1f2 100644
--- a/test/core/util/test_config.c
+++ b/test/core/util/test_config.c
@@ -83,6 +83,50 @@ static void install_crash_handler() {
   _set_abort_behavior(0, _CALL_REPORTFAULT);
   signal(SIGABRT, abort_handler);
 }
+#elif GPR_POSIX_CRASH_HANDLER
+#include <execinfo.h>
+#include <stdio.h>
+#include <string.h>
+#include <grpc/support/useful.h>
+
+static char g_alt_stack[8192];
+
+#define MAX_FRAMES 32
+
+static void crash_handler(int signum, siginfo_t *info, void *data) {
+  void *addrlist[MAX_FRAMES + 1];
+  int addrlen;
+  int i;
+  char **symlist;
+
+  fprintf(stderr, "Caught signal %d\n", signum);
+  addrlen = backtrace(addrlist, GPR_ARRAY_SIZE(addrlist));
+
+  symlist = backtrace_symbols(addrlist, addrlen);
+  for (i = 0; i < addrlen; i++) {
+    fprintf(stderr, "  %s\n", symlist[i]);
+  }
+  free(symlist);
+
+  raise(signum);
+}
+
+static void install_crash_handler() {
+  stack_t ss;
+  struct sigaction sa;
+  memset(&ss, 0, sizeof(ss));
+  memset(&sa, 0, sizeof(sa));
+  ss.ss_size = sizeof(g_alt_stack);
+  ss.ss_sp = g_alt_stack;
+  GPR_ASSERT(sigaltstack(&ss, NULL) == 0);
+  sa.sa_flags = (int)(SA_SIGINFO | SA_ONSTACK | SA_RESETHAND);
+  sa.sa_sigaction = crash_handler;
+  GPR_ASSERT(sigaction(SIGILL, &sa, NULL) == 0);
+  GPR_ASSERT(sigaction(SIGABRT, &sa, NULL) == 0);
+  GPR_ASSERT(sigaction(SIGBUS, &sa, NULL) == 0);
+  GPR_ASSERT(sigaction(SIGSEGV, &sa, NULL) == 0);
+  GPR_ASSERT(sigaction(SIGSTKFLT, &sa, NULL) == 0);
+}
 #else
 static void install_crash_handler() {}
 #endif