Re: c/7873: arm-linux-gcc fails when assigning address to a bit field

[Richard Earnshaw <rearnsha@cambridge.arm.com>]

> >How-To-Repeat:
> 
> /** Run "arm-linux-gcc -c" on this preprocessed segment : **/
> 
> 
> unsigned int  x0  = 0;
> 
> typedef struct {
>   unsigned int  field1 : 20;
>   unsigned int  field2 : 12;
> } XX;
> 
> static XX yy;
> 
> static void foo (void)
> {
>   yy.field1 = (unsigned int ) (&x0);
> }

Please try the following patch:

2002-09-10  Richard Earnshaw  <rearnsha@arm.com>

	* arm.md (insv): Use reg_or_int_operand for operand[3].

Index: arm.md
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/arm/arm.md,v
retrieving revision 1.104
diff -p -r1.104 arm.md
*** arm.md	29 Jul 2002 12:41:46 -0000	1.104
--- arm.md	10 Sep 2002 09:44:07 -0000
***************
*** 1866,1872 ****
    [(set (zero_extract:SI (match_operand:SI 0 "s_register_operand" "")
                           (match_operand:SI 1 "general_operand" "")
                           (match_operand:SI 2 "general_operand" ""))
!         (match_operand:SI 3 "nonmemory_operand" ""))]
    "TARGET_ARM"
    "
    {
--- 1866,1872 ----
    [(set (zero_extract:SI (match_operand:SI 0 "s_register_operand" "")
                           (match_operand:SI 1 "general_operand" "")
                           (match_operand:SI 2 "general_operand" ""))
!         (match_operand:SI 3 "reg_or_int_operand" ""))]
    "TARGET_ARM"
    "
    {