diff options
Diffstat (limited to 'absl/debugging/failure_signal_handler.cc')
| -rw-r--r-- | absl/debugging/failure_signal_handler.cc | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/absl/debugging/failure_signal_handler.cc b/absl/debugging/failure_signal_handler.cc index af651c72..1f69bfa8 100644 --- a/absl/debugging/failure_signal_handler.cc +++ b/absl/debugging/failure_signal_handler.cc @@ -24,6 +24,10 @@ #include <unistd.h> #endif +#ifdef __APPLE__ +#include <TargetConditionals.h> +#endif + #ifdef ABSL_HAVE_MMAP #include <sys/mman.h> #endif @@ -37,6 +41,7 @@ #include <ctime> #include "absl/base/attributes.h" +#include "absl/base/internal/errno_saver.h" #include "absl/base/internal/raw_logging.h" #include "absl/base/internal/sysinfo.h" #include "absl/debugging/internal/examine_stack.h" @@ -44,10 +49,15 @@ #ifndef _WIN32 #define ABSL_HAVE_SIGACTION +// Apple WatchOS and TVOS don't allow sigaltstack +#if !(defined(TARGET_OS_WATCH) && TARGET_OS_WATCH) && \ + !(defined(TARGET_OS_TV) && TARGET_OS_TV) +#define ABSL_HAVE_SIGALTSTACK +#endif #endif namespace absl { -inline namespace lts_2019_08_08 { +ABSL_NAMESPACE_BEGIN ABSL_CONST_INIT static FailureSignalHandlerOptions fsh_options; @@ -117,7 +127,7 @@ const char* FailureSignalToString(int signo) { } // namespace debugging_internal -#ifndef _WIN32 +#ifdef ABSL_HAVE_SIGALTSTACK static bool SetupAlternateStackOnce() { #if defined(__wasm__) || defined (__asjms__) @@ -169,7 +179,7 @@ static bool SetupAlternateStackOnce() { // Returns the appropriate flag for sig_action.sa_flags // if the system supports using an alternate stack. static int MaybeSetupAlternateStack() { -#ifndef _WIN32 +#ifdef ABSL_HAVE_SIGALTSTACK ABSL_ATTRIBUTE_UNUSED static const bool kOnce = SetupAlternateStackOnce(); return SA_ONSTACK; #else @@ -205,9 +215,8 @@ static void InstallOneFailureHandler(FailureSignalData* data, #endif static void WriteToStderr(const char* data) { - int old_errno = errno; + absl::base_internal::ErrnoSaver errno_saver; absl::raw_logging_internal::SafeWriteToStderr(data, strlen(data)); - errno = old_errno; } static void WriteSignalMessage(int signo, void (*writerfn)(const char*)) { @@ -357,5 +366,5 @@ void InstallFailureSignalHandler(const FailureSignalHandlerOptions& options) { } } -} // inline namespace lts_2019_08_08 +ABSL_NAMESPACE_END } // namespace absl |