[LLVMbugs] [Bug 10847] New: precompiled header broken with c++0x (issue with rvalue ?)
bugzilla-daemon at llvm.org
bugzilla-daemon at llvm.org
Fri Sep 2 15:02:49 PDT 2011
http://llvm.org/bugs/show_bug.cgi?id=10847
Summary: precompiled header broken with c++0x (issue with
rvalue ?)
Product: clang
Version: trunk
Platform: PC
OS/Version: All
Status: NEW
Severity: normal
Priority: P
Component: C++0x
AssignedTo: unassignedclangbugs at nondot.org
ReportedBy: devlists at shadowlab.org
CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com
Created an attachment (id=7210)
--> (http://llvm.org/bugs/attachment.cgi?id=7210)
Sample
While trying to compile a c++0x file using precompiled header, clang failed
with some error diagnostics that does not appear without precompiled header.
This bug occurs when trying to used precompiled libc++ headers for instance
(either trunk or Xcode 4.1 libc++ version).
And as it is a precompiled header bug, it's not easy to write a simple reduced
test case.
To reproduce the bug, you can use the attached sample.
Uncompress the archive. cd to the created directory. launch test.sh
By default, the test.sh script will try to use the system libc++, but you can
use the attached preprocessed version instead by toggling commented lines in
the script.
$tar -xf bug.tbz
$cd bug
$bash test.sh
# Compile without precompiled header. Works fine
clang++ -std=c++0x -stdlib=libc++ -include include/map.h -c map.cpp
# Precompile header
# toggle between the 2 following line to use either the system libc++ (first
line)
# or the included preprocessed libc++ header file.
clang++ -x c++-header -std=c++0x -stdlib=libc++ include/map.h -o map.h.pth
# clang++ -v -x c++-header -std=c++0x include/libc++.ii -o map.h.pth
# Compile using precompiled header
clang++ -std=c++0x -stdlib=libc++ -include map.h -c map.cpp
In file included from map.cpp:1:
In file included from Desktop/bug/include/map.h:2:
In file included from
llvm/release/Release+Asserts/bin/../lib/c++/v1/unordered_map:318:
In file included from
llvm/release/Release+Asserts/bin/../lib/c++/v1/__hash_table:16:
llvm/release/Release+Asserts/bin/../lib/c++/v1/memory:1469:26: error: call to
constructor of 'true_type'
(aka 'integral_constant<bool, true>') is ambiguous
{__construct(__has_construct<allocator_type, pointer, _Args...>(),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
llvm/release/Release+Asserts/bin/../lib/c++/v1/unordered_map:1066:20: note: in
instantiation of function template specialization
'std::__1::allocator_traits<std::__1::allocator<std::__1::__hash_node<std::__1::pair<const
char *, void *>, void *> > >::construct<const char *, const char *const
&>' requested here
__node_traits::construct(__na, _VSTD::addressof(__h->__value_.first),
^
llvm/release/Release+Asserts/bin/../lib/c++/v1/unordered_map:1146:25: note: in
instantiation of function template specialization
'std::__1::unordered_map<const char *, void *, std::__1::hash<const char
*>, std::__1::equal_to<const char *>, std::__1::allocator<std::__1::pair<const
char *const,
void *> > >::__construct_node<const char *const &, , void>' requested
here
__node_holder __h = __construct_node(__k);
^
map.cpp:7:17: note: in instantiation of member function
'std::__1::unordered_map<const char *, void *, std::__1::hash<const char *>,
std::__1::equal_to<const char *>,
std::__1::allocator<std::__1::pair<const char *const, void *> >
>::operator[]' requested here
sAllClassesDict[name] = NULL;
^
llvm/release/Release+Asserts/bin/../lib/c++/v1/type_traits:161:24: note:
candidate is the implicit move constructor
struct _LIBCPP_VISIBLE integral_constant
^
llvm/release/Release+Asserts/bin/../lib/c++/v1/type_traits:161:24: note:
candidate is the implicit move constructor
llvm/release/Release+Asserts/bin/../lib/c++/v1/type_traits:161:24: note:
candidate is the implicit copy constructor
llvm/release/Release+Asserts/bin/../lib/c++/v1/memory:1530:42: note: passing
argument to parameter here
static void __construct(true_type, allocator_type& __a, _Tp* __p,
_Args&&... __args)
^
llvm/release/Release+Asserts/bin/../lib/c++/v1/memory:1469:26: error: call to
constructor of 'true_type'
(aka 'integral_constant<bool, true>') is ambiguous
{__construct(__has_construct<allocator_type, pointer, _Args...>(),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
llvm/release/Release+Asserts/bin/../lib/c++/v1/unordered_map:1069:20: note: in
instantiation of function template specialization
'std::__1::allocator_traits<std::__1::allocator<std::__1::__hash_node<std::__1::pair<const
char *, void *>, void *> > >::construct<void *, >' requested here
__node_traits::construct(__na, _VSTD::addressof(__h->__value_.second),
^
llvm/release/Release+Asserts/bin/../lib/c++/v1/unordered_map:1146:25: note: in
instantiation of function template specialization
'std::__1::unordered_map<const char *, void *, std::__1::hash<const char
*>, std::__1::equal_to<const char *>, std::__1::allocator<std::__1::pair<const
char *const,
void *> > >::__construct_node<const char *const &, , void>' requested
here
__node_holder __h = __construct_node(__k);
^
map.cpp:7:17: note: in instantiation of member function
'std::__1::unordered_map<const char *, void *, std::__1::hash<const char *>,
std::__1::equal_to<const char *>,
std::__1::allocator<std::__1::pair<const char *const, void *> >
>::operator[]' requested here
sAllClassesDict[name] = NULL;
^
llvm/release/Release+Asserts/bin/../lib/c++/v1/type_traits:161:24: note:
candidate is the implicit move constructor
struct _LIBCPP_VISIBLE integral_constant
^
llvm/release/Release+Asserts/bin/../lib/c++/v1/type_traits:161:24: note:
candidate is the implicit move constructor
llvm/release/Release+Asserts/bin/../lib/c++/v1/type_traits:161:24: note:
candidate is the implicit copy constructor
llvm/release/Release+Asserts/bin/../lib/c++/v1/memory:1530:42: note: passing
argument to parameter here
static void __construct(true_type, allocator_type& __a, _Tp* __p,
_Args&&... __args)
^
In file included from map.cpp:1:
In file included from Desktop/bug/include/map.h:2:
In file included from
llvm/release/Release+Asserts/bin/../lib/c++/v1/unordered_map:318:
In file included from
llvm/release/Release+Asserts/bin/../lib/c++/v1/__hash_table:18:
llvm/release/Release+Asserts/bin/../lib/c++/v1/algorithm:2296:33: error: call
to constructor of
'std::__1::__less<unsigned long, unsigned long>' is ambiguous
return _VSTD::max(__a, __b, __less<_Tp>());
^~~~~~~~~~~~~
llvm/release/Release+Asserts/bin/../lib/c++/v1/__hash_table:1204:20: note: in
instantiation of function template specialization
'std::__1::max<unsigned long>' requested here
rehash(_VSTD::max<size_type>(2 * __bc + 1,
^
llvm/release/Release+Asserts/bin/../lib/c++/v1/__config:178:15: note: expanded
from:
#define _VSTD std::_LIBCPP_NAMESPACE
^
llvm/release/Release+Asserts/bin/../lib/c++/v1/unordered_map:1147:41: note: in
instantiation of member function
'std::__1::__hash_table<std::__1::pair<const char *, void *>,
std::__1::__unordered_map_hasher<std::__1::pair<const char *, void *>,
std::__1::hash<const char *>,
true>, std::__1::__unordered_map_equal<std::__1::pair<const char *, void
*>, std::__1::equal_to<const char *>, true>,
std::__1::allocator<std::__1::pair<const char
*, void *> > >::__node_insert_unique' requested here
pair<iterator, bool> __r = __table_.__node_insert_unique(__h.get());
^
map.cpp:7:17: note: in instantiation of member function
'std::__1::unordered_map<const char *, void *, std::__1::hash<const char *>,
std::__1::equal_to<const char *>,
std::__1::allocator<std::__1::pair<const char *const, void *> >
>::operator[]' requested here
sAllClassesDict[name] = NULL;
^
llvm/release/Release+Asserts/bin/../lib/c++/v1/algorithm:632:8: note: candidate
is the implicit move constructor
struct __less
^
llvm/release/Release+Asserts/bin/../lib/c++/v1/algorithm:632:8: note: candidate
is the implicit move constructor
llvm/release/Release+Asserts/bin/../lib/c++/v1/algorithm:632:8: note: candidate
is the implicit copy constructor
llvm/release/Release+Asserts/bin/../lib/c++/v1/algorithm:2286:46: note: passing
argument to parameter '__comp' here
max(const _Tp& __a, const _Tp& __b, _Compare __comp)
^
3 errors generated.
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