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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - -Wformat warnings for integer widening are too strict"
href="https://bugs.llvm.org/show_bug.cgi?id=41467">41467</a>
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<th>Summary</th>
<td>-Wformat warnings for integer widening are too strict
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Frontend
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>ndesaulniers@google.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk, srhines@google.com
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<pre>From this LKML discussion: <a href="https://lkml.org/lkml/2019/4/11/639">https://lkml.org/lkml/2019/4/11/639</a>.
Simple patches for fixing -Wformat warnings in the Linux kernel are getting
rejected in cases where they warn about the format of a shorter integer using a
larger integer's format flag in cases where the shorter integer would undergo
standard C integer promotion when passed to printf-like functions.
This is making it difficult to enable a warning that generally helps catch more
nonsensical conversions. Is there maybe a way to create another -Wformat-less
strict flag that doesn't warn for integer widening like -Wformat, or create
-Wformat-pedantic which does warn on integer widening and remove warning on
that case in -Wformat?
<a href="https://github.com/ClangBuiltLinux/linux/issues/378">https://github.com/ClangBuiltLinux/linux/issues/378</a></pre>
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