|
| From: | Bruno Haible |
| Subject: | Re: btowc(0) configure check hangs clang? [was: Possible configure bug] |
| Date: | Mon, 5 Sep 2011 21:38:48 +0200 |
| User-agent: | KMail/1.13.6 (Linux/2.6.37.6-0.5-desktop; KDE/4.6.0; x86_64; ; ) |
On 2011-09-03 I wrote:
> I guess that clang hangs or produces an endless loop because of
> this inline definition in <wchar.h>:
>
> extern wint_t __btowc_alias (int __c) __asm ("btowc");
> __extern_inline wint_t
> __NTH (btowc (int __c))
> { return (__builtin_constant_p (__c) && __c >= '\0' && __c <= '\x7f'
> ? (wint_t) __c : __btowc_alias (__c)); }
>
> Evidently, clang gives a different semantics to __asm than GCC.
> But GCC's semantics of __asm is fixed for 20 years.
>
> Conclusion: Needs to be fixed in clang.
And it's confirmed by this bug report in clang's bug tracker:
<http://llvm.org/bugs/show_bug.cgi?id=9614>
Bruno
--
In memoriam Moshe Weinberg <http://en.wikipedia.org/wiki/Moshe_Weinberg>
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