Hello,

such a check would have immediately catched the error in m68k.h that
drove us crazy three months ago.

The test condition is constant so it's actually compiled out in optimized
builds.


2004-06-05  Bernardo Innocenti  <bernie@develer.com>

	* regclass.c (init_reg_sets): Check for missing registers in target
	initializer macros FIXED_REGISTERS and CALL_USED_REGISTERS.


diff -u -p -r1.186 regclass.c
--- gcc-HEAD.orig/gcc/regclass.c	3 Mar 2004 08:34:33 -0000	1.186
+++ gcc-HEAD/gcc/regclass.c	5 Jun 2004 08:21:10 -0000
@@ -278,6 +278,12 @@ init_reg_sets (void)
 	  SET_HARD_REG_BIT (reg_class_contents[i], j);
     }
 
+  /* Sanity check: make sure the target macros FIXED_REGISTERS and
+     CALL_USED_REGISTERS had the right number of initializers.  */
+  if (sizeof fixed_regs != sizeof initial_fixed_regs
+      || sizeof call_used_regs != sizeof initial_call_used_regs)
+    abort();
+
   memcpy (fixed_regs, initial_fixed_regs, sizeof fixed_regs);
   memcpy (call_used_regs, initial_call_used_regs, sizeof call_used_regs);
   memset (global_regs, 0, sizeof global_regs);