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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - float.h not working on mingw"
href="https://bugs.llvm.org/show_bug.cgi?id=41202">41202</a>
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<th>Summary</th>
<td>float.h not working on mingw
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>8.0
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>markus.boeck02@gmail.com
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>After compiling clang 8 using mingw gcc 8.1 I wanted to compile one of my
projects but it failed to compile as there is an error when including the file
float.h. Tried the same with Clang 7 and Clang 7.0.1 and did not have any
problems.
Turns out the problem is something with the preprocessor:
#if (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)) \
|| (__clang_major__ >=3)
#if !defined(_FLOAT_H___) && !defined(__FLOAT_H)
#include_next <float.h>
#endif
Clang 7 and 7.0.1 for some reason do not enable the region which has
#include_next yet clang 8 does and fails as it does not fit a next float.h</pre>
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