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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - if (x) where x is a float emits a warning with -Wfloat-conversion"
href="https://llvm.org/bugs/show_bug.cgi?id=25965">25965</a>
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<th>Summary</th>
<td>if (x) where x is a float emits a warning with -Wfloat-conversion
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.7
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Frontend
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>gpakosz@pempek.net
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>int main(int argc, char* argv[])
{
float f = argc;
if (f)
return 1;
return 0;
}
---
$ clang -Wfloat-conversion main.c
main.c:8:7: warning: implicit conversion turns floating-point number into
integer: 'float' to 'bool' [-Wfloat-conversion]
if (f)
~~ ^
As you can see, clang emits a warning while it seems to me everything non 0
should be converted to true.
By comparison, gcc 5.2.0 emits no warning with this sample.</pre>
</div>
</p>
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