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gcc7 stfdef.h mentions __float128 on i686 breaking preprocessing #200

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juhp opened this issue Feb 26, 2017 · 0 comments
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gcc7 stfdef.h mentions __float128 on i686 breaking preprocessing #200

juhp opened this issue Feb 26, 2017 · 0 comments

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@juhp
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juhp commented Feb 26, 2017

Fedora 26 will ship gcc7, which has stddef.h that increases i686 max alignment to 16 specifically for _Float128. This breaks c2hs preprocessing on i686 with gtk2hs-buildtools with gcc7 on i686.

Building glib-0.13.2.2...
Preprocessing library glib-0.13.2.2...
gtk2hsC2hs: Error in C header file.
/usr/lib/gcc/i686-redhat-linux/7/include/stddef.h:435: (column 3) [FATAL] 
  >>> Syntax error!
  The symbol `__float128' does not fit here.

This is with latest gtk2hs-buildtools-0.13.2.2.

I don't think gcc-7.0 has been officially released yet (though I guess it will be soon) but I am opening this ticket as a heads-up.
@MaskRay MaskRay mentioned this issue May 21, 2017
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hamishmack added a commit that referenced this issue Aug 16, 2017
@hamishmack
Merge pull request #205 from felixonmars/float128
b1de090 
Add support for `__float128` (fixes #200)
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