* flow.c (life_analysis): Only turn off PROP_LOG_LINKS and

[pf3gnuchains/gcc-fork.git] / gcc / system.h

diff --git a/gcc/system.h b/gcc/system.h
index d5526b2..37cc727 100644 (file)
--- a/gcc/system.h
+++ b/gcc/system.h
@@ -234,6 +234,22 @@ extern int errno;
 # endif /* defined(HOST_BITS_PER_LONG) && defined(HOST_BITS_PER_LONGLONG) */
 #endif /* ! HOST_WIDEST_INT */
 
+/* Infrastructure for defining missing _MAX and _MIN macros.  Note that
+   macros defined with these cannot be used in #if.  */
+
+/* The extra casts work around common compiler bugs.  */
+#define INTTYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+/* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
+   It is necessary at least when t == time_t.  */
+#define INTTYPE_MINIMUM(t) ((t) (INTTYPE_SIGNED (t) \
+                             ? ~ (t) 0 << (sizeof(t) * CHAR_BIT - 1) : (t) 0))
+#define INTTYPE_MAXIMUM(t) ((t) (~ (t) 0 - INTTYPE_MINIMUM (t)))
+
+/* Use that infrastructure to provide a few constants.  */
+#ifndef UCHAR_MAX
+# define UCHAR_MAX INTTYPE_MAXIMUM (unsigned char)
+#endif
+
 #ifdef TIME_WITH_SYS_TIME
 # include <sys/time.h>
 # include <time.h>
@@ -584,4 +600,26 @@ extern void abort PARAMS ((void));
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
 #endif
 
+/* Traditional C cannot initialize union members of structs.  Provide
+   a macro which expands appropriately to handle it.  This only works
+   if you intend to initalize the union member to zero since it relies
+   on default initialization to zero in the traditional C case.  */
+#ifdef __STDC__
+#define UNION_INIT_ZERO , {0}
+#else
+#define UNION_INIT_ZERO
+#endif
+
+/* GCC now gives implicit declaration warnings for undeclared builtins.  */
+#if defined(__GNUC__) && defined (__SIZE_TYPE__)
+extern void *alloca (__SIZE_TYPE__);
+#endif
+
+/* Various error reporting routines want to use __FUNCTION__.  */
+#if (GCC_VERSION < 2007)
+#ifndef __FUNCTION__
+#define __FUNCTION__ "?"
+#endif /* ! __FUNCTION__ */
+#endif
+
 #endif /* __GCC_SYSTEM_H__ */