[release-branch.go1.3] include/u.h: define _DEFAULT_SOURCE for new glibc

adg · ianlancetaylor · commit b48cd4b9dcb6 · 2014-08-12T09:38:23.000+10:00
««« CL 112530043 / c8059ac4e0ec include/u.h: define _DEFAULT_SOURCE for new glibc glibc devs have apparently decided _BSD_SOURCE will be deprecated on Linux, and issue a preprocessor warning if declaring _BSD_SOURCE without _DEFAULT_SOURCE. https://sourceware.org/glibc/wiki/Release/2.20 Fixes #8397. LGTM=iant R=dave, gobot, iant CC=golang-codereviews https://golang.org/cl/112530043 »»» TBR=rsc CC=golang-codereviews https://golang.org/cl/124150043
diff --git a/include/u.h b/include/u.h
@@ -40,6 +40,7 @@ extern "C" {
 #endif
 #define _BSD_SOURCE 1
 #define _NETBSD_SOURCE 1	/* NetBSD */
+#define _DEFAULT_SOURCE 1	/* glibc > 2.19 */
 #define _SVID_SOURCE 1
 #if !defined(__APPLE__) && !defined(__OpenBSD__)
 #	define _XOPEN_SOURCE 1000
