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-rw-r--r--absl/debugging/internal/address_is_readable.cc5
1 files changed, 3 insertions, 2 deletions
diff --git a/absl/debugging/internal/address_is_readable.cc b/absl/debugging/internal/address_is_readable.cc
index f45e59b3..65376063 100644
--- a/absl/debugging/internal/address_is_readable.cc
+++ b/absl/debugging/internal/address_is_readable.cc
@@ -35,10 +35,12 @@ ABSL_NAMESPACE_END
#include <fcntl.h>
#include <sys/syscall.h>
#include <unistd.h>
+
#include <atomic>
#include <cerrno>
#include <cstdint>
+#include "absl/base/internal/errno_saver.h"
#include "absl/base/internal/raw_logging.h"
namespace absl {
@@ -67,7 +69,7 @@ static void Unpack(uint64_t x, int *pid, int *read_fd, int *write_fd) {
// This is a namespace-scoped variable for correct zero-initialization.
static std::atomic<uint64_t> pid_and_fds; // initially 0, an invalid pid.
bool AddressIsReadable(const void *addr) {
- int save_errno = errno;
+ absl::base_internal::ErrnoSaver errno_saver;
// We test whether a byte is readable by using write(). Normally, this would
// be done via a cached file descriptor to /dev/null, but linux fails to
// check whether the byte is readable when the destination is /dev/null, so
@@ -126,7 +128,6 @@ bool AddressIsReadable(const void *addr) {
std::memory_order_relaxed);
}
} while (errno == EBADF);
- errno = save_errno;
return bytes_written == 1;
}