[cfe-dev] -fno-signed-char ignored

[David Majnemer]

We had a bug where we silently ignored -fno-signed-char, I've fixed this
with r238105.  As a workaround, you can also use -funsigned-char to achieve
the desired effect.

On Fri, May 22, 2015 at 2:34 PM, Javier Múgica <javier_3 at runbox.com> wrote:

> I use the -fno-signed-char command line option but it has no effect:
> CHAR_MIN is not zero but -128 and I get warnings like
>
>  warning: implicit conversion changes signedness: 'const char' to
>       'wchar_t' (aka 'unsigned short') [-Wsign-conversion]
>                         while(*cs) *s1++=*cs++;
>                                         ~^~~~~
>
> so clearly the char type is treated as unsigned. My exact command line is
>
> clang -c -x c -std=c11 -fno-signed-char -Weverything -D _DLL -D _DEBUG -D
> _MT -O0 -g3 *.th
>
> And, does the 3 I write at -g3 have any effect or is it spurious?
>
>
> By the way, does anybody know how can I redirect the diagnosis to a file
> instead of stdout (or how do I change stdout itself)? I invoke clang from a
> makefile, in Windows, like
>
> >nmake libraries.mak > buildoutput.txt
>
> but this has no effect of the output from the compiler.
>
> Thanks in advance
>
> -- Javier A. M.
>
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> cfe-dev at cs.uiuc.edu
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>
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