Mercurial > gnulib
changeset 37239:3bc441308c14
ignore-value: prefer GCC version back through 2.0
The code didn't match the comments, so I did a bit of software
archaeology. GCC 2.0 seems to support __extension__ and
__typeof__, so fix both code and comments to use 2.0.
* lib/ignore-value.h (ignore_value): Use __extension__ and
__typeof__ for GCC 2.0 through 3.3, too.
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Wed, 27 Nov 2013 14:52:17 -0800 |
| parents | e7bdef0ff2f9 |
| children | 8c0f23afb519 |
| files | ChangeLog lib/ignore-value.h |
| diffstat | 2 files changed, 13 insertions(+), 4 deletions(-) [+] |
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--- a/ChangeLog Wed Nov 27 16:20:43 2013 +0100 +++ b/ChangeLog Wed Nov 27 14:52:17 2013 -0800 @@ -1,3 +1,12 @@ +2013-11-27 Paul Eggert <eggert@cs.ucla.edu> + + ignore-value: prefer GCC version back through 2.0 + The code didn't match the comments, so I did a bit of software + archaeology. GCC 2.0 seems to support __extension__ and + __typeof__, so fix both code and comments to use 2.0. + * lib/ignore-value.h (ignore_value): Use __extension__ and + __typeof__ for GCC 2.0 through 3.3, too. + 2013-11-25 Mats Erik Andersson <gnu@gisladisker.se> pty: Activate the signature wrapper of forkpty.
--- a/lib/ignore-value.h Wed Nov 27 16:20:43 2013 +0100 +++ b/lib/ignore-value.h Wed Nov 27 14:52:17 2013 -0800 @@ -35,10 +35,10 @@ #ifndef _GL_IGNORE_VALUE_H #define _GL_IGNORE_VALUE_H -/* The __attribute__((__warn_unused_result__)) feature - is available in gcc versions 3.4 and newer, - while the typeof feature has been available since 2.7 at least. */ -#if 3 < __GNUC__ + (4 <= __GNUC_MINOR__) +/* The __attribute__((__warn_unused_result__)) feature is available in + gcc versions 3.4 and newer, while __typeof__ and __extension__ have + been available since 2.0 at least. */ +#if 2 <= __GNUC__ # define ignore_value(x) \ (__extension__ ({ __typeof__ (x) __x = (x); (void) __x; })) #else