plan9port

commit bd6f12068b28ba7eb96a3cd495e2201c852682b7
parent 5802b09e9d8ceadd2cefdccfd0391c04e492369b
Author: Kurt H Maier <khm@pnnl.gov>
Date:   Thu,  7 May 2020 17:55:15 -0700

fmt: adjust GCC version check

atomics were added in GCC 4.9:  https://gcc.gnu.org/gcc-4.9/changes.html

Diffstat:
M
src/lib9/fmt/fmt.c
 | 
4
++--

1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/lib9/fmt/fmt.c b/src/lib9/fmt/fmt.c
@@ -10,10 +10,10 @@
  * even though that's technically racy. A mutex is not OK, because we want to
  * be able to call print from signal handlers.)
  *
- * RHEL is using an old GCC (atomics were added in GCC 4.8).
+ * RHEL is using an old GCC (atomics were added in GCC 4.9).
  * AIX is using its own IBM compiler (XL C).
  */
-#if __IBMC__ || !__clang__ && __GNUC__ && (__GNUC__ < 4 || (__GNUC__==4 && __GNUC_MINOR__<8))
+#if __IBMC__ || !__clang__ && __GNUC__ && (__GNUC__ < 4 || (__GNUC__==4 && __GNUC_MINOR__<9))
 #warning not using C11 stdatomic on legacy system
 #define _Atomic volatile
 #define atomic_load(x) (*(x))