Note that AsyncSignalSafeWriteToStderr preserves errno, and inline one use of it into a lambda.
PiperOrigin-RevId: 535245982
Change-Id: I816f60c8b6476536df6836500f01c9a3ad88ddd4
diff --git a/absl/base/internal/raw_logging.h b/absl/base/internal/raw_logging.h
index e876525..3f852d3 100644
--- a/absl/base/internal/raw_logging.h
+++ b/absl/base/internal/raw_logging.h
@@ -129,7 +129,7 @@
const char* format, ...) ABSL_PRINTF_ATTRIBUTE(4, 5);
// Writes the provided buffer directly to stderr, in a signal-safe, low-level
-// manner.
+// manner. Preserves errno.
void AsyncSignalSafeWriteToStderr(const char* s, size_t len);
// compile-time function to get the "base" filename, that is, the part of
diff --git a/absl/debugging/failure_signal_handler.cc b/absl/debugging/failure_signal_handler.cc
index 9f399d0..0db2a89 100644
--- a/absl/debugging/failure_signal_handler.cc
+++ b/absl/debugging/failure_signal_handler.cc
@@ -236,10 +236,6 @@
#endif
-static void WriteToStderr(const char* data) {
- absl::raw_log_internal::AsyncSignalSafeWriteToStderr(data, strlen(data));
-}
-
static void WriteSignalMessage(int signo, int cpu,
void (*writerfn)(const char*)) {
char buf[96];
@@ -380,7 +376,11 @@
#endif
// First write to stderr.
- WriteFailureInfo(signo, ucontext, my_cpu, WriteToStderr);
+ WriteFailureInfo(
+ signo, ucontext, my_cpu, +[](const char* data) {
+ absl::raw_log_internal::AsyncSignalSafeWriteToStderr(data,
+ strlen(data));
+ });
// Riskier code (because it is less likely to be async-signal-safe)
// goes after this point.
