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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - libcxx fails to compile with newlib for cmath functions"
href="https://llvm.org/bugs/show_bug.cgi?id=26128">26128</a>
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<th>Summary</th>
<td>libcxx fails to compile with newlib for cmath functions
</td>
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<th>Product</th>
<td>libc++
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>rianquinn@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>In libcxx/include/cmath, use see the following:
...
using ::isinf;
using ::isnan;
...
In NewLib, these functions are macros. Here is a comment from the NewLib
source:
/* Note: isinf and isnan were once functions in newlib that took double
* arguments. C99 specifies that these names are reserved for macros
* supporting multiple floating point types. Thus, they are
* now defined as macros. Implementations of the old functions
* taking double arguments still exist for compatibility purposes
* (prototypes for them are in <ieeefp.h>). */
Currently I am patching libcxx with #ifndef _NEWLIB_VERSION wrapped around a
couple of these functions (there are several that have this issue). Not sure
what the correct solution would be, but this seems reasonable to me.
- Rian</pre>
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