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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion "Dangling pointers found in call sites map" with -ffast-math and __builtin_sqrtf"
href="http://llvm.org/bugs/show_bug.cgi?id=21403">21403</a>
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<th>Summary</th>
<td>Assertion "Dangling pointers found in call sites map" with -ffast-math and __builtin_sqrtf
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<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>
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<th>Component</th>
<td>LLVM Codegen
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jonathan.sauer@gmx.de
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=13257" name="attach_13257" title="Log of clang run">attachment 13257</a> <a href="attachment.cgi?id=13257&action=edit" title="Log of clang run">[details]</a></span>
Log of clang run
The following code crashes clang r220769 when being compiled with -ffast-math
and -O1:
__attribute__((__always_inline__)) static float sqr(float f)
{
return f * f;
}
__attribute__((__always_inline__)) static float sqrt(float f)
{
return __builtin_sqrtf(f);
}
float bar(float f)
{
return sqrt(sqr(f));
}
This results in (full log attached):
% clang++ -O1 -ffast-math -c clang.cpp
Assertion failed: (CallSites.empty() && "Dangling pointers found in call sites
map"), function RefreshCallGraph, file
/Users/rynnsauer/LLVM/llvm/lib/Analysis/IPA/CallGraphSCCPass.cpp, line 343.
0 clang 0x00000001032b2f0f
llvm::sys::PrintStackTrace(__sFILE*) + 47
1 clang 0x00000001032b372b SignalHandler(int) + 555
2 libsystem_platform.dylib 0x00007fff9036a5aa _sigtramp + 26
3 libsystem_platform.dylib 000000000000000000 _sigtramp + 1875466864
4 clang 0x00000001032b34e6 abort + 22
5 clang 0x00000001032b34c1 __assert_rtn + 81
6 clang 0x0000000102f15132 (anonymous
namespace)::CGPassManager::RefreshCallGraph(llvm::CallGraphSCC&,
llvm::CallGraph&, bool) + 4034
7 clang 0x0000000102f13ba5 (anonymous
namespace)::CGPassManager::runOnModule(llvm::Module&) + 2677
8 clang 0x000000010323b621
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 1137
The code compiles successfully with clang r219601.
Slight changes in the code also make it compile successfully: Removing the call
to "sqr" or "sqrt", or removing the "always inline" attribute all result in a
successful compile.</pre>
</div>
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