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



python2.3 now builds fine on arm-linux with this patch. It's not yet
checked into the 3.2 branch.

Richard Earnshaw writes:
> 
> > >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"
>     "
>     {
> 
> 
> 
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