http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51785
--- Comment #19 from Benjamin Kosnik <bkoz at gcc dot gnu.org> 2012-03-01 00:21:11 UTC --- Created attachment 26794 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26794 gets conditionally declared/used Here's a way to deal with gets that is pretty simple. If it's around at configure time, it's used. If not, it's dropped from <cstdio>. This uses the same configure bits and approach used for math. This should prevent any compile error at bootstrap time. That seems sufficient for gcc-4.7 release. RMs? Note, I'm on f17 and I'm not running into this during make/check of trunk gcc. If somebody can give me self-contained sources that fail on f17 it would be appreciated. Please don't put in GLIBC macros to cstdio. Boo. Instead, if you need to layer on a glibc part to this, you should start with this patch, and then conditionally define/undefine _GLIBCXX_HAVE_GETS in libstdc++-v3/config/os/gnu-linux/os_defines.h based on the glibc prerequisites and version checks. -benjamin