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authorRich Felker <dalias@aerifal.cx>2011-06-06 20:12:42 -0400
committerRich Felker <dalias@aerifal.cx>2011-06-06 20:12:42 -0400
commitcbf35978a9870fb1f5c73a852c986d4fcca6c2d4 (patch)
treec7a9371d2ca441203a07cd689a671d6a2e98ca8b /include/errno.h
parent71a80c5767aa4e6b7cbc2b58feef3cfca76e29fe (diff)
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use __attribute__((const)) for errno and pthread_self if __GNUC__ is defined
this is not too ugly and should result in significant code size and performance improvements for many programs.
Diffstat (limited to 'include/errno.h')
-rw-r--r--include/errno.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/errno.h b/include/errno.h
index d9c2c9c7..9d680338 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -7,6 +7,9 @@ extern "C" {
#include <bits/errno.h>
+#ifdef __GNUC__
+__attribute__((const))
+#endif
extern int *__errno_location(void);
#define errno (*__errno_location())