Re: com php-src: Fix for failing tests. gcc 4.8.3 would optimize away the assigment.: ext/mysqlnd/mysqlnd_ps_codec.c

From: Date: Sat, 27 Dec 2014 02:52:45 +0000
Subject: Re: com php-src: Fix for failing tests. gcc 4.8.3 would optimize away the assigment.: ext/mysqlnd/mysqlnd_ps_codec.c
References: 1  Groups: php.cvs 
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This patch increases the binary size on 2MB (20%) :( # without patch $ size sapi/cli/php text data bss dec hex filename 11243874 55868 134140 11433882 ae779a sapi/cli/php # with patch $ size sapi/cli/php text data bss dec hex filename 13398084 55888 134148 13588120 cf5698 sapi/cli/php It's probably better not to use dec32. Thanks. Dmitry. On Fri, Dec 26, 2014 at 11:36 PM, Keyur Govande <keyur@php.net> wrote: > Commit: aa192f57c9d867ab3d7be69c7f269cfd7a10d14f > Author: Keyur Govande <keyur@php.net> Fri, 26 Dec 2014 > 20:36:19 +0000 > Parents: 80260bcfa667bf25c65264b129f08a35059436a0 > Branches: PHP-5.5 PHP-5.6 master > > Link: > > http://git.php.net/?p=php-src.git;a=commitdiff;h=aa192f57c9d867ab3d7be69c7f269cfd7a10d14f > > Log: > Fix for failing tests. gcc 4.8.3 would optimize away the assigment. > > Changed paths: > M ext/mysqlnd/mysqlnd_ps_codec.c > > > Diff: > diff --git a/ext/mysqlnd/mysqlnd_ps_codec.c > b/ext/mysqlnd/mysqlnd_ps_codec.c > index d960912..a57ff5d 100644 > --- a/ext/mysqlnd/mysqlnd_ps_codec.c > +++ b/ext/mysqlnd/mysqlnd_ps_codec.c > @@ -195,7 +195,8 @@ ps_fetch_float(zval * zv, const MYSQLND_FIELD * const > field, unsigned int pack_l > #ifdef HAVE_DECIMAL_FP_SUPPORT > { > typedef float dec32 __attribute__((mode(SD))); > - dec32 d32val = fval; > + /* volatile so the compiler will not optimize away the > conversion */ > + volatile dec32 d32val = fval; > > /* The following cast is guaranteed to do the right thing > */ > dval = (double) d32val; > > > -- > PHP CVS Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > >

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