From: Lucio De Re <lucio.dere@gmail.com>
Date: Mon, 25 Jul 2011 17:45:44 +0000 (-0400)
Subject: build: define getcallerpc in u.h (fix for Plan 9 build)
X-Git-Tag: weekly.2011-07-29~58
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=eb3f2083f91fa2c48bad4c997f5d8a4378aaf04e;p=gostls13.git

build: define getcallerpc in u.h (fix for Plan 9 build)

. By defining getcallerpc(x) as __builtin_return_address(0)
  here, it becomes possible to use the Plan 9 compatible form
  when compiling using GCC.  The alternative is to add conditional
  compilation based on the compiler identity in "cmd/8g/gsubr.c"
  to distinguish between the two cases.

R=golang-dev
CC=golang-dev, rsc
https://golang.org/cl/4800048
---

diff --git a/include/u.h b/include/u.h
index 9ee7493b46..44bfcd63b2 100644
--- a/include/u.h
+++ b/include/u.h
@@ -194,6 +194,8 @@ typedef u64int uint64;
 #undef _NEEDUINT
 #undef _NEEDULONG
 
+#define getcallerpc(x)	__builtin_return_address(0)
+
 #ifndef SIGBUS
 #define SIGBUS SIGSEGV /* close enough */
 #endif