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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Assertion failure when expanding variadic macros for plist output"
href="https://bugs.llvm.org/show_bug.cgi?id=44493">44493</a>
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<th>Summary</th>
<td>Assertion failure when expanding variadic macros for plist output
</td>
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<th>Product</th>
<td>clang
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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>Linux
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Static Analyzer
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<th>Assignee</th>
<td>dcoughlin@apple.com
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<th>Reporter</th>
<td>xazax.hun@gmail.com
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<th>CC</th>
<td>dcoughlin@apple.com, llvm-bugs@lists.llvm.org
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<pre>I get the following assertion failure:
clang-10:
/usr/local/google/home/xazax/LLVM/clang/lib/StaticAnalyzer/Core/PlistDiagnostics.cpp:1171:
(anonymous namespace)::MacroNameAndArgs
getMacroNameAndArgs(clang::SourceLocation, const clang::Preprocessor &):
Assertion `TheTok.is(tok::r_paren) && "Expanded macro argument acquisition
failed! After the end of the loop" " this token should be ')'!"' failed.
I vaguely recall variadic macros not being supported yet, but I think we should
not have an assert failure.
Minimal repro:
#define log(args...) \
do { \
} while (0)
int main(int argc, char** argv) {
log("arg");
log("arg", "arg2");
int a;
a & 0xffc00000;
return 0;
}
Command line:
clang-10 --analyze --analyzer-output plist-multi-file -o out.plist -Xclang
-analyzer-config -Xclang expand-macros=true minimal.cpp</pre>
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