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<base href="https://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 --- - bugpoint SEGVs because Module destructor is called multiple times"
href="https://llvm.org/bugs/show_bug.cgi?id=24853">24853</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>bugpoint SEGVs because Module destructor is called multiple times
</td>
</tr>
<tr>
<th>Product</th>
<td>tools
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</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>bugpoint
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>anton@samba.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=14892" name="attach_14892" title="Test case">attachment 14892</a> <a href="attachment.cgi?id=14892&action=edit" title="Test case">[details]</a></span>
Test case
I see a SEGV in bugpoint on ppc64le Linux when running:
# bugpoint -O2 -llc-safe testcase.bc
Looks like we are calling the Module destructor multiple times:
Breakpoint 3, 0x000000001052f2c8 in llvm::Module::~Module (this=0x10c4b540,
__in_chrg=<optimised out>)
at /home/anton/llvm/lib/IR/Module.cpp:66
66 Module::~Module() {
#0 0x000000001052f2c8 in llvm::Module::~Module (this=0x10c4b540,
__in_chrg=<optimised out>)
at /home/anton/llvm/lib/IR/Module.cpp:66
#1 0x0000000010120f7c in std::default_delete<llvm::Module>::operator()
(this=<optimised out>, __ptr=0x10c4b540)
at /usr/include/c++/5/bits/unique_ptr.h:76
#2 std::unique_ptr<llvm::Module, std::default_delete<llvm::Module>
<span class="quote">>::~unique_ptr (this=0x3fffffffe570, </span >
__in_chrg=<optimised out>) at /usr/include/c++/5/bits/unique_ptr.h:236
#3 TestOptimizer (BD=..., Test=<optimised out>, Safe=<optimised out>,
Error=...)
at /home/anton/llvm/tools/bugpoint/Miscompilation.cpp:712
#4 0x0000000010124564 in (anonymous
namespace)::ReduceMiscompilingFunctions::TestFuncs (Funcs=..., Error=...,
this=0x3fffffffea68, this=0x3fffffffea68) at
/home/anton/llvm/tools/bugpoint/Miscompilation.cpp:278
#5 0x0000000010125894 in (anonymous
namespace)::ReduceMiscompilingFunctions::doTest (Error=..., Suffix=...,
Prefix=...,
this=0x3fffffffea68) at
/home/anton/llvm/tools/bugpoint/Miscompilation.cpp:197
#6 llvm::ListReducer<llvm::Function*>::reduceList (this=0x3fffffffea68,
TheList=..., Error=...)
at /home/anton/llvm/tools/bugpoint/ListReducer.h:55
#7 0x0000000010128ac4 in DebugAMiscompilation (BD=...,
TestFn=0x10120d10 <TestOptimizer(llvm::BugDriver&, llvm::Module*,
llvm::Module*, std::__cxx11::string&)>, Error=...)
at /home/anton/llvm/tools/bugpoint/Miscompilation.cpp:638
#8 0x000000001012b520 in llvm::BugDriver::debugMiscompilation
(this=0x3ffffffff020, Error=0x3fffffffedb8)
at /home/anton/llvm/tools/bugpoint/Miscompilation.cpp:749
#9 0x00000000101083c4 in llvm::BugDriver::run (this=0x3ffffffff020,
ErrMsg=...)
at /home/anton/llvm/tools/bugpoint/BugDriver.cpp:212
#10 0x00000000100f155c in main (argc=<optimised out>, argv=<optimised out>)
at /home/anton/llvm/tools/bugpoint/bugpoint.cpp:204
Breakpoint 3, 0x000000001052f2c8 in llvm::Module::~Module (this=0x10c4b540,
__in_chrg=<optimised out>)
at /home/anton/llvm/lib/IR/Module.cpp:66
66 Module::~Module() {
#0 0x000000001052f2c8 in llvm::Module::~Module (this=0x10c4b540,
__in_chrg=<optimised out>)
at /home/anton/llvm/lib/IR/Module.cpp:66
#1 0x000000001012458c in (anonymous
namespace)::ReduceMiscompilingFunctions::TestFuncs (Funcs=..., Error=...,
this=0x3fffffffea68, this=0x3fffffffea68) at
/home/anton/llvm/tools/bugpoint/Miscompilation.cpp:280
#2 0x0000000010125894 in (anonymous
namespace)::ReduceMiscompilingFunctions::doTest (Error=..., Suffix=...,
Prefix=...,
this=0x3fffffffea68) at
/home/anton/llvm/tools/bugpoint/Miscompilation.cpp:197
#3 llvm::ListReducer<llvm::Function*>::reduceList (this=0x3fffffffea68,
TheList=..., Error=...)
at /home/anton/llvm/tools/bugpoint/ListReducer.h:55
#4 0x0000000010128ac4 in DebugAMiscompilation (BD=...,
TestFn=0x10120d10 <TestOptimizer(llvm::BugDriver&, llvm::Module*,
llvm::Module*, std::__cxx11::string&)>, Error=...)
at /home/anton/llvm/tools/bugpoint/Miscompilation.cpp:638
#5 0x000000001012b520 in llvm::BugDriver::debugMiscompilation
(this=0x3ffffffff020, Error=0x3fffffffedb8)
at /home/anton/llvm/tools/bugpoint/Miscompilation.cpp:749
#6 0x00000000101083c4 in llvm::BugDriver::run (this=0x3ffffffff020,
ErrMsg=...)
at /home/anton/llvm/tools/bugpoint/BugDriver.cpp:212
#7 0x00000000100f155c in main (argc=<optimised out>, argv=<optimised out>)
at /home/anton/llvm/tools/bugpoint/bugpoint.cpp:204</pre>
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