(USE_C_ALLOCA): New macro. Define if not using GNU C's builtin alloca.

From-SVN: r2397

(USE_C_ALLOCA): New macro. Define if not using GNU C's builtin alloca.
From-SVN: r2397
5c8ad7f4 · James Van Artsdalen · 5b970343 · 5c8ad7f4 · 5c8ad7f4
Commit 5c8ad7f4 authored Oct 11, 1992 by James Van Artsdalen
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gcc/config/i386/xm-aix.h
+5 -1

gcc/config/i386/xm-sysv4.h
+8 -0

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--- a/gcc/config/i386/xm-aix.h
+++ b/gcc/config/i386/xm-aix.h
@@ -49,6 +49,10 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define bzero(a,b) memset (a,0,b)
 #define bcmp(a,b,c) memcmp (a,b,c)

+/* If compiled with GNU C, use the built-in alloca.  */
+#undef alloca
 #ifdef __GNUC__
-#define alloca(n) __builtin_alloca(n)
+#define alloca __builtin_alloca
+#else
+#define USE_C_ALLOCA
 #endif
--- a/gcc/config/i386/xm-sysv4.h
+++ b/gcc/config/i386/xm-sysv4.h
@@ -2,3 +2,11 @@

 #include "xm-i386.h"
 #include "xm-svr4.h"
+
+/* If compiled with GNU C, use the built-in alloca.  */
+#undef alloca
+#ifdef __GNUC__
+#define alloca __builtin_alloca
+#else
+#define USE_C_ALLOCA
+#endif