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* [Bug libstdc++/70493] std::setlocale("") throws exception
[not found] <bug-70493-4@http.gcc.gnu.org/bugzilla/>
@ 2020-07-13 11:15 ` redi at gcc dot gnu.org
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From: redi at gcc dot gnu.org @ 2020-07-13 11:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70493
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WONTFIX
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Libstdc++ has no idea why the locale name was invalid. When you use the empty
string "" it constructs a locale name from the environment and then calls
newlocale from the C library. newlocale returns (locale_t)0 and sets ENOENT,
which according to POSIX means "For any of the categories in category_mask, the
locale data is not available" (or for the GNU C library, "locale is not a
string pointer referring to a valid locale").
Unless libstdc++ is going to iteratively try creating a locale from each of the
LC_* environment variables to see which one failed, it can't really give you
any better information. That doesn't seem worth the effort (and increase in
code size), sorry.
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[not found] <bug-70493-4@http.gcc.gnu.org/bugzilla/>
2020-07-13 11:15 ` [Bug libstdc++/70493] std::setlocale("") throws exception redi at gcc dot gnu.org
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