<html>
<head>
<base href="http://llvm.org/bugs/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - error merging operator== from different modules"
href="http://llvm.org/bugs/show_bug.cgi?id=20786">20786</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>error merging operator== from different modules
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</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>Modules
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>biancacristinacristescu@gmail.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>$ cat module_TreePlayer.map
module libMathCore {
header "TMath.h"
header "TVirtualFitter.h"
}
module libHist {
header "TFormula.h"
header "TFractionFitter.h"
}
module libTreePlayer {
header "TBranchProxy.h"
header "TTreeFormula.h"
}
--------------------------------------------------------------------------------
$ cat TMath.h
#include "random.h"
--------------------------------------------------------------------------------
$ cat TVirtualFitter.h //yes, empty
$
--------------------------------------------------------------------------------
$ cat TFormula.h
class TFormula {};
--------------------------------------------------------------------------------
$ cat TFractionFitter.h
# include "TVirtualFitter.h"
--------------------------------------------------------------------------------
$ cat TBranchProxy.h
#include "random.h"
--------------------------------------------------------------------------------
$ cat TTreeFormula.h
#include "TFormula.h"
class TTreeFormula : public TFormula {};
--------------------------------------------------------------------------------
$ cat random.h
namespace std
{
template<typename _UIntType, unsigned int __w,
unsigned int __n, unsigned int __m, unsigned int __r,
_UIntType __a, unsigned int __u, _UIntType __d, unsigned int __s,
_UIntType __b, unsigned int __t,
_UIntType __c, unsigned int __l, _UIntType __f>
class mersenne_twister_engine
{
public:
friend bool
operator==(const mersenne_twister_engine& __lhs,
const mersenne_twister_engine& __rhs)
{ return 0; }
};
typedef mersenne_twister_engine<
unsigned int,
32, 624, 397, 31,
0x9908b0dfUL, 11,
0xffffffffUL, 7,
0x9d2c5680UL, 15,
0xefc60000UL, 18, 1812433253UL> mt19937;
class random_device
{
mt19937 _M_mt;
};
} // namespace std
--------------------------------------------------------------------------------
Command run and error generated is:
"/usr/inst-deb-clang/bin/clang" -cc1 -triple x86_64-unknown-linux-gnu -E
-disable-free -mrelocation-model static -mdisable-fp-elim -fmath-errno
-masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array
-target-cpu x86-64 -target-linker-version 2.24 -v -dwarf-column-info
-resource-dir /usr/inst-deb-clang/bin/../lib/clang/3.6.0 -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8 -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/x86_64-linux-gnu
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/backward
-internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/x86_64-linux-gnu/c++/4.8
-internal-isystem /usr/local/include -internal-isystem
/usr/inst-deb-clang/bin/../lib/clang/3.6.0/include -internal-externc-isystem
/usr/include/x86_64-linux-gnu -internal-externc-isystem /include
-internal-externc-isystem /usr/include -std=c++11 -fdeprecated-macro
-fdebug-compilation-dir /home/cristina/clang-bugs/clang-tiered-pcm-reproducer
-ferror-limit 19 -fmessage-length 0 -mstackrealign -fobjc-runtime=gcc
-fcxx-exceptions -fexceptions -fdiagnostics-show-option -x c++
-fcolor-diagnostics -x c++ -std=c++11
-I/home/cristina/root/objClangBugs/include -fmodules
-fno-modules-global-index -fdisable-module-hash -fmodule-maps -emit-module
/home/cristina/root/objClangBugs/include/module_TreePlayer.map
-fmodules-cache-path=/home/cristina/clang-bugs/clang-tiered-pcm-reproducer/pcm
-fmodule-name=libTreePlayer
clang -cc1 version 3.6.0 based upon LLVM 3.6.0svn default target
x86_64-unknown-linux-gnu
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/x86_64-linux-gnu"
ignoring nonexistent directory "/include"
#include "..." search starts here:
#include <...> search starts here:
/home/cristina/root/objClangBugs/include
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/backward
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/x86_64-linux-gnu/c++/4.8
/usr/local/include
/usr/inst-deb-clang/bin/../lib/clang/3.6.0/include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
clang -cc1 version 3.6.0 based upon LLVM 3.6.0svn default target
x86_64-unknown-linux-gnu
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/x86_64-linux-gnu"
ignoring nonexistent directory "/include"
#include "..." search starts here:
#include <...> search starts here:
/home/cristina/root/objClangBugs/include
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/backward
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/x86_64-linux-gnu/c++/4.8
/usr/local/include
/usr/inst-deb-clang/bin/../lib/clang/3.6.0/include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
clang -cc1 version 3.6.0 based upon LLVM 3.6.0svn default target
x86_64-unknown-linux-gnu
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/x86_64-linux-gnu"
ignoring nonexistent directory "/include"
#include "..." search starts here:
#include <...> search starts here:
/home/cristina/root/objClangBugs/include
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/c++/4.8/backward
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../include/x86_64-linux-gnu/c++/4.8
/usr/local/include
/usr/inst-deb-clang/bin/../lib/clang/3.6.0/include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
In module 'libHist' imported from
/home/cristina/root/objClangBugs/include/TTreeFormula.h:1:
In module 'libMathCore' imported from
/home/cristina/root/objClangBugs/include/TFractionFitter.h:1:
/home/cristina/root/objClangBugs/include/random.h:13:7: error:
'std::operator==' from module 'libMathCore' is not present in definition of
namespace 'std' in module 'libMathCore'
operator==(const mersenne_twister_engine& __lhs,
^
/home/cristina/root/objClangBugs/include/random.h:1:11: note: definition has no
member 'operator=='
namespace std
^
1 error generated.
-------------------------------------------------------------------------------
I have seen this error in more than this case.</pre>
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