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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Incorrect expansion of '@' in inline asm macros"
href="https://bugs.llvm.org/show_bug.cgi?id=42034">42034</a>
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<th>Summary</th>
<td>Incorrect expansion of '@' in inline asm macros
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>8.0
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>All
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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>C
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>royger@freebsd.org
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>Hello,
clang doesn't seem to properly expand '@' when used in asm macros which are
then called in inline assembly. Given the following example:
# cc -v
FreeBSD clang version 8.0.0 (tags/RELEASE_800/final 356365) (based on LLVM
8.0.0)
Target: x86_64-unknown-freebsd13.0
Thread model: posix
InstalledDir: /usr/bin
# cat test.c
asm (".macro FOO\n.L@:\n.endm");
asm ("FOO");
asm ("FOO");
# cc -o test test.c
<instantiation>:1:1: error: invalid symbol redefinition
.L@:
^
1 error generated.
AFAICT it seems like clang doesn't carry proper count of how many times an asm
macro has been instantiated in inline assembly.</pre>
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