2012-02-20  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* config/arm/arm.c (arm_print_operand): Avoid null-pointer
	dereference from MEM_SIZE.

=== modified file 'gcc/config/arm/arm.c'
--- old/gcc/config/arm/arm.c	2012-02-09 00:47:59 +0000
+++ new/gcc/config/arm/arm.c	2012-02-20 15:32:26 +0000
@@ -17446,6 +17446,7 @@
 	rtx addr;
 	bool postinc = FALSE;
 	unsigned align, memsize, align_bits;
+	rtx memsize_rtx;
 
 	gcc_assert (GET_CODE (x) == MEM);
 	addr = XEXP (x, 0);
@@ -17460,7 +17461,8 @@
 	   instruction (for some alignments) as an aid to the memory subsystem
 	   of the target.  */
 	align = MEM_ALIGN (x) >> 3;
-	memsize = INTVAL (MEM_SIZE (x));
+	memsize_rtx = MEM_SIZE (x);
+	memsize = memsize_rtx ? INTVAL (memsize_rtx) : 0;
 	
 	/* Only certain alignment specifiers are supported by the hardware.  */
 	if (memsize == 16 && (align % 32) == 0)