[src/trunk]: src/include later versions of pcc may define __GNUC__ for compat...

[plunky <plunky%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/12dd5db8d402
branches:  trunk
changeset: 755317:12dd5db8d402
user:      plunky <plunky%NetBSD.org@localhost>
date:      Tue Jun 01 08:42:56 2010 +0000

description:
later versions of pcc may define __GNUC__ for compatibility reasons, so
having a system definition for alloca is counter productive as it seems
fairly common to use

    #ifdef __GNUC__
    #define alloca ..
    #endif

in user-headers (eg see usr.sbin/gspa/gspa/gspa_ass.h)

So, defang this definition as we don't otherwise provide alloca on NetBSD

diffstat:

 include/stdlib.h |  4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diffs (18 lines):

diff -r 20aaeebb366b -r 12dd5db8d402 include/stdlib.h
--- a/include/stdlib.h  Tue Jun 01 06:07:56 2010 +0000
+++ b/include/stdlib.h  Tue Jun 01 08:42:56 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: stdlib.h,v 1.91 2010/02/25 18:37:12 joerg Exp $        */
+/*     $NetBSD: stdlib.h,v 1.92 2010/06/01 08:42:56 plunky Exp $       */
 
 /*-
  * Copyright (c) 1990, 1993
@@ -242,7 +242,7 @@
 #if defined(alloca) && (alloca == __builtin_alloca) && \
        defined(__GNUC__) && (__GNUC__ < 2)
 void   *alloca(int);     /* built-in for gcc */
-#elif defined(__PCC__)
+#elif defined(__PCC__) && !defined(__GNUC__)
 #define alloca(size) __builtin_alloca(size)
 #else
 void   *alloca(size_t);