Re: RFC: Changing AC_PROG_CC to AC_PROG_CC_C99 in top level configure

[Alan Modra via Gcc-patches]

On 2021-05-04 8:42 a.m., Nick Clifton wrote:
> Hi Guys,
> 
> On 4/30/21 7:36 PM, Simon Marchi wrote:
>> I think this fix is obvious enough, I encourage you to push it,
> 
> OK - I have pushed the patch to the mainline branches of both
> the gcc and binutils-gdb repositories.

Thanks Nick!  Incidentally, I checked the AC_PROG_CC_C99 change on
both binutils and gcc mainline using gcc-4.9.

To build gcc on x86_64 I found the following patch necessary to avoid
lots of
error: uninitialized const member ‘stringop_algs::stringop_strategy::max’
error: uninitialized const member ‘stringop_algs::stringop_strategy::alg’
when compiling config/i386/i386-options.c.  These can't be cured by
configuring with --disable-stage1-checking.

diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index 97d6f3863cb..cc3b1b6d666 100644
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -73,8 +73,8 @@ struct stringop_algs
 {
   const enum stringop_alg unknown_size;
   const struct stringop_strategy {
-    const int max;
-    const enum stringop_alg alg;
+    int max;
+    enum stringop_alg alg;
     int noalign;
   } size [MAX_STRINGOP_ALGS];
 };


-- 
Alan Modra
Australia Development Lab, IBM