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<base href="http://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Unwind tables can't be generated when using inline asm"
href="http://llvm.org/bugs/show_bug.cgi?id=22523">22523</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Unwind tables can't be generated when using inline asm
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.5
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Macintosh
</td>
</tr>
<tr>
<th>OS</th>
<td>MacOS X
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mjbshaw@hotmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=13830" name="attach_13830" title="The first file requested by the clang diagnostic message">attachment 13830</a> <a href="attachment.cgi?id=13830&action=edit" title="The first file requested by the clang diagnostic message">[details]</a></span>
The first file requested by the clang diagnostic message
If I compile a very simple C++ program, clang crashes complaining that the
address of an intrinsic cannot be taken. As far as I can tell, clang should be
able to compile this, and the fact that it cannot is a bug. The invocation and
output are:
$ clang++-3.5 -v -emit-llvm -target mipsel -o out.bc -c t.cc ⏎ ✱ ◼
clang version 3.5.1 (tags/RELEASE_351/final)
Target: mipsel
Thread model: posix
"/usr/local/Cellar/llvm35/3.5.1/lib/llvm-3.5/bin/clang" -cc1 -triple mipsel
-emit-llvm-bc -disable-free -main-file-name t.cc -mrelocation-model static
-mdisable-fp-elim -fmath-errno -no-integrated-as -mconstructor-aliases
-target-cpu mips32r2 -target-feature -n64 -target-feature +o32 -target-abi o32
-mfloat-abi hard -target-linker-version 241.9 -v -dwarf-column-info
-coverage-file /Users/mjbshaw/School/cs6960/a2/pathtracer/out.bc -resource-dir
/usr/local/Cellar/llvm35/3.5.1/lib/llvm-3.5/bin/../lib/clang/3.5.1
-fdeprecated-macro -fno-dwarf-directory-asm -fdebug-compilation-dir
/Users/mjbshaw/School/cs6960/a2/pathtracer -ferror-limit 19 -fmessage-length
112 -mstackrealign -fobjc-runtime=gcc -fcxx-exceptions -fexceptions
-fdiagnostics-show-option -fcolor-diagnostics -o out.bc -x c++ t.cc
clang -cc1 version 3.5.1 based upon LLVM 3.5.1 default target
x86_64-apple-darwin14.1.0
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/local/Cellar/llvm35/3.5.1/lib/llvm-3.5/bin/../lib/clang/3.5.1/include
/usr/include
End of search list.
Cannot take the address of an intrinsic!
%call = invoke i32 @llvm.mips.loadi(i32 signext 0, i32 signext 0)
to label %invoke.cont unwind label %lpad
Cannot take the address of an intrinsic!
%call = invoke i32 @llvm.mips.loadi(i32 signext 0, i32 signext 0)
to label %invoke.cont unwind label %lpad
fatal error: error in backend: Broken function found, compilation aborted!
clang: error: clang frontend command failed with exit code 70 (use -v to see
invocation)
clang version 3.5.1 (tags/RELEASE_351/final)
Target: mipsel
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to
<a href="http://llvm.org/bugs/">http://llvm.org/bugs/</a> and include the crash backtrace, preprocessed source, and
associated run script.
clang: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg:
/var/folders/vf/2d0_lsz10zz_31khhsxhsn5r0000gn/T/t-8d447b.cpp
clang: note: diagnostic msg:
/var/folders/vf/2d0_lsz10zz_31khhsxhsn5r0000gn/T/t-8d447b.sh
clang: note: diagnostic msg:
********************
If I compile with -fno-exceptions, then it compiles successfully (presumably
because there are no unwind tables being created). Additionally, if I move the
declaration/definition of the variable foo to *after* the loadi function call,
then it compiles successfully (even without -fno-exceptions).</pre>
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