Fix TEMP_FAILURE_RETRY on non-GNU C++ dialects
TEMP_FAILURE_RETRY uses typeof which is only allowed by gcc and clang
for GNU dialects. This switches to __typeof__ which is always supported.
Bug: 224644083
Test: m
Change-Id: I96d48d2f0dc5cd9ab903755d93c71c4eb80f7529
diff --git a/libutils/include/utils/Compat.h b/libutils/include/utils/Compat.h
index 6002567..3221899 100644
--- a/libutils/include/utils/Compat.h
+++ b/libutils/include/utils/Compat.h
@@ -71,19 +71,17 @@
#define CONSTEXPR
#endif
-/*
- * TEMP_FAILURE_RETRY is defined by some, but not all, versions of
- * <unistd.h>. (Alas, it is not as standard as we'd hoped!) So, if it's
- * not already defined, then define it here.
- */
+/* TEMP_FAILURE_RETRY is not available on macOS, but still useful there. */
#ifndef TEMP_FAILURE_RETRY
/* Used to retry syscalls that can return EINTR. */
-#define TEMP_FAILURE_RETRY(exp) ({ \
- typeof (exp) _rc; \
- do { \
- _rc = (exp); \
- } while (_rc == -1 && errno == EINTR); \
- _rc; })
+#define TEMP_FAILURE_RETRY(exp) \
+ ({ \
+ __typeof__(exp) _rc; \
+ do { \
+ _rc = (exp); \
+ } while (_rc == -1 && errno == EINTR); \
+ _rc; \
+ })
#endif
#if defined(_WIN32)