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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - -Wshorten-64-to-32 doesn't handle +="
href="https://bugs.llvm.org/show_bug.cgi?id=33559">33559</a>
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<th>Summary</th>
<td>-Wshorten-64-to-32 doesn't handle +=
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>smeenai@fb.com
</td>
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<th>CC</th>
<td>alexander.v.shaposhnikov@gmail.com, compnerd@compnerd.org, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>% cat reduced.c
void f(int x, long long y) {
x += y;
}
% clang -fsyntax-only -Wshorten-64-to-32 reduced.c
# no warning
Compare to
% cat reduced.c
void f(int x, long long y) {
x = x + y;
}
% clang -fsyntax-only -Wshorten-64-to-32 reduced.c
reduced.c:2:11: warning: implicit conversion loses integer precision: 'long
long' to 'int' [-Wshorten-64-to-32]
x = x + y;
~ ~~^~~
1 warning generated.</pre>
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