Enable backtraces on C tests

Makefile

@@ -92,7 +92,7 @@ CXX_opt = $(DEFAULT_CXX)
 LD_opt = $(DEFAULT_CC)
 LDXX_opt = $(DEFAULT_CXX)
 CPPFLAGS_opt = -O2
-LDFLAGS_opt =
+LDFLAGS_opt = -rdynamic
 DEFINES_opt = NDEBUG
 
 VALID_CONFIG_basicprof = 1
@@ -119,7 +119,7 @@ CXX_dbg = $(DEFAULT_CXX)
 LD_dbg = $(DEFAULT_CC)
 LDXX_dbg = $(DEFAULT_CXX)
 CPPFLAGS_dbg = -O0
-LDFLAGS_dbg =
+LDFLAGS_dbg = -rdynamic
 DEFINES_dbg = _DEBUG DEBUG
 
 VALID_CONFIG_mutrace = 1
@@ -139,7 +139,7 @@ LD_valgrind = $(DEFAULT_CC)
 LDXX_valgrind = $(DEFAULT_CXX)
 CPPFLAGS_valgrind = -O0
 OPENSSL_CFLAGS_valgrind = -DPURIFY
-LDFLAGS_valgrind =
+LDFLAGS_valgrind = -rdynamic
 DEFINES_valgrind = _DEBUG DEBUG GRPC_TEST_SLOWDOWN_BUILD_FACTOR=20
 
 VALID_CONFIG_tsan = 1
@@ -190,7 +190,7 @@ CXX_gcov = g++
 LD_gcov = gcc
 LDXX_gcov = g++
 CPPFLAGS_gcov = -O0 -fprofile-arcs -ftest-coverage
-LDFLAGS_gcov = -fprofile-arcs -ftest-coverage
+LDFLAGS_gcov = -fprofile-arcs -ftest-coverage -rdynamic
 DEFINES_gcov = _DEBUG DEBUG
 
 

include/grpc/support/port_platform.h

@@ -121,6 +121,7 @@
 #define GPR_GETPID_IN_UNISTD_H 1
 #define GPR_HAVE_MSG_NOSIGNAL 1
 #elif defined(__linux__)
+#define GPR_POSIX_CRASH_HANDLER 1
 #define GPR_PLATFORM_STRING "linux"
 #ifndef _BSD_SOURCE
 #define _BSD_SOURCE
@@ -188,6 +189,7 @@
 #define GPR_PLATFORM_STRING "osx"
 #define GPR_CPU_POSIX 1
 #define GPR_GCC_TLS 1
+#define GPR_POSIX_CRASH_HANDLER 1
 #endif
 #define GPR_GCC_ATOMIC 1
 #define GPR_POSIX_LOG 1

templates/Makefile.template

@@ -108,7 +108,7 @@
   LD_opt = $(DEFAULT_CC)
   LDXX_opt = $(DEFAULT_CXX)
   CPPFLAGS_opt = -O2
-  LDFLAGS_opt =
+  LDFLAGS_opt = -rdynamic
   DEFINES_opt = NDEBUG
 
   VALID_CONFIG_basicprof = 1
@@ -135,7 +135,7 @@
   LD_dbg = $(DEFAULT_CC)
   LDXX_dbg = $(DEFAULT_CXX)
   CPPFLAGS_dbg = -O0
-  LDFLAGS_dbg =
+  LDFLAGS_dbg = -rdynamic
   DEFINES_dbg = _DEBUG DEBUG
 
   VALID_CONFIG_mutrace = 1
@@ -155,7 +155,7 @@
   LDXX_valgrind = $(DEFAULT_CXX)
   CPPFLAGS_valgrind = -O0
   OPENSSL_CFLAGS_valgrind = -DPURIFY
-  LDFLAGS_valgrind =
+  LDFLAGS_valgrind = -rdynamic
   DEFINES_valgrind = _DEBUG DEBUG GRPC_TEST_SLOWDOWN_BUILD_FACTOR=20
 
   VALID_CONFIG_tsan = 1
@@ -206,7 +206,7 @@
   LD_gcov = gcc
   LDXX_gcov = g++
   CPPFLAGS_gcov = -O0 -fprofile-arcs -ftest-coverage
-  LDFLAGS_gcov = -fprofile-arcs -ftest-coverage
+  LDFLAGS_gcov = -fprofile-arcs -ftest-coverage -rdynamic
   DEFINES_gcov = _DEBUG DEBUG
 
 

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