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[Bug regression/48570] gcc-4.6: wrong subscription with -std=c++0x
- From: "joseph at codesourcery dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 12 Apr 2011 12:44:19 +0000
- Subject: [Bug regression/48570] gcc-4.6: wrong subscription with -std=c++0x
- Auto-submitted: auto-generated
- References: <bug-48570-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48570
--- Comment #4 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2011-04-12 12:44:03 UTC ---
There are lots of optimizations that are only present for narrow strings
but logically make sense for wide strings as well (for example, some str*
and mem* built-in functions should logically have wcs* and wmem* analogues
... it was while looking at that some time ago that I found glibc's
wmemcmp was wrongly comparing wide characters as type wint_t instead of
wchar_t). Hopefully not many cases need addressing to fix this wrong-code
bug, but the infrastructure for extracting values from wide string
constants could be of use in future for dealing with the more general
missing optimizations.