+2001-03-06 Zack Weinberg <zackw@stanford.edu>
+
+ * libiberty.h: Prototype C_alloca; define alloca to either
+ __builtin_alloca or C_alloca as appropriate.
+
2001-03-01 John David Anglin <dave@hiauly1.hia.nrc.ca>
* safe-ctype.h (_sch_test): Cast enum bit to unsigned short int for pcc
#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
+/* Drastically simplified alloca configurator. If we're using GCC,
+ we use __builtin_alloca; otherwise we use the C alloca. The C
+ alloca is always available. You can override GCC by defining
+ USE_C_ALLOCA yourself. */
+extern PTR C_alloca PARAMS((size_t));
+#undef alloca
+#if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA
+# define alloca(x) __builtin_alloca(x)
+#else
+# define alloca(x) C_alloca(x)
+# undef USE_C_ALLOCA
+# define USE_C_ALLOCA 1
+#endif
+
#ifdef __cplusplus
}
#endif