On Tue, Dec 27, 2022 at 02:22:43AM +0100, Jeremie Courreges-Anglas wrote:
> 
> MD5.xs:375:21: error: mixing declarations and code is incompatible with 
> standards before C99 [-Werror,-Wdeclaration-after-statement]
>             unsigned char *buf = (unsigned char *)(SvPV(ST(2), len));
> 
> The build system asks for -Werror *and* -Wdeclaration-after-statement so
> let's fix the code.  ok?

I just happened to be in this local patch today updating for 5.36.  This
seems OK to me and I'll make sure I update it.

Upstream declares variable there that we don't use.

https://github.com/afresh1/OpenBSD-perl/blob/blead/patches/GOOD/use_our_MD5.patch#L373-L374
 
 
> Index: gnu/usr.bin/perl/cpan/Digest-MD5/MD5.xs
> ===================================================================
> RCS file: /home/cvs/src/gnu/usr.bin/perl/cpan/Digest-MD5/MD5.xs,v
> retrieving revision 1.20
> diff -u -p -r1.20 MD5.xs
> --- gnu/usr.bin/perl/cpan/Digest-MD5/MD5.xs   1 Mar 2021 23:21:24 -0000       
> 1.20
> +++ gnu/usr.bin/perl/cpan/Digest-MD5/MD5.xs   27 Dec 2022 01:20:54 -0000
> @@ -371,8 +371,8 @@ context(ctx, ...)
>      PPCODE:
>       if (items > 2) {
>           STRLEN len;
> -         ctx->count = SvUV(ST(1)) << 3;
>           unsigned char *buf = (unsigned char *)(SvPV(ST(2), len));
> +         ctx->count = SvUV(ST(1)) << 3;
>           ctx->state[0] = buf[ 0] | (buf[ 1]<<8) | (buf[ 2]<<16) | (buf[ 
> 3]<<24);
>           ctx->state[1] = buf[ 4] | (buf[ 5]<<8) | (buf[ 6]<<16) | (buf[ 
> 7]<<24);
>           ctx->state[2] = buf[ 8] | (buf[ 9]<<8) | (buf[10]<<16) | 
> (buf[11]<<24);
> 
> 
> -- 
> jca | PGP : 0x1524E7EE / 5135 92C1 AD36 5293 2BDF  DDCC 0DFA 74AE 1524 E7EE

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