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* [Bug c++/56971] New: GCC claims a friend function to be overloaded, but it isn't
@ 2013-04-15 16:15 henning@still-hidden.de
2013-04-15 16:19 ` [Bug c++/56971] " henning@still-hidden.de
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: henning@still-hidden.de @ 2013-04-15 16:15 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56971
Bug #: 56971
Summary: GCC claims a friend function to be overloaded, but it
isn't
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: henning@still-hidden.de
template <typename T>
class rp {
};
template <template <typename> class P>
struct b {
template <class, template <typename> class FriendP>
friend void f(b<FriendP> from);
};
template <class, template <typename> class P>
void f(b<P> from) {
}
int main() {
b<rp> v;
f<int>(v);
return 0;
}
-----
> gcc map.cpp
main.cpp: In function 'int main()':
main.cpp:17:13: error: call of overloaded 'f(b<rp>&)' is ambiguous
f<int>(v);
^
main.cpp:17:13: note: candidates are:
main.cpp:12:6: note: void f(b<P>) [with <template-parameter-1-1> = int; P = rp]
void f(b<P> from) {
^
main.cpp:8:17: note: void f(b<FriendP>) [with <template-parameter-2-1> = int;
FriendP = rp; P = rp]
friend void f(b<FriendP> from);
^
-----
I can't see an overload here.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/56971] GCC claims a friend function to be overloaded, but it isn't
2013-04-15 16:15 [Bug c++/56971] New: GCC claims a friend function to be overloaded, but it isn't henning@still-hidden.de
@ 2013-04-15 16:19 ` henning@still-hidden.de
2013-04-25 10:55 ` daniel.kruegler at googlemail dot com
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: henning@still-hidden.de @ 2013-04-15 16:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56971
--- Comment #1 from henning@still-hidden.de 2013-04-15 16:19:21 UTC ---
> gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/src/gcc-4.8-20130411/configure --prefix=/usr
--libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch
--enable-gnu-unique-object --enable-linker-build-id --enable-cloog-backend=isl
--disable-cloog-version-check --enable-lto --enable-gold --enable-ld=default
--enable-plugin --with-plugin-ld=ld.gold --with-linker-hash-style=gnu
--disable-install-libiberty --disable-multilib --disable-libssp
--disable-werror --enable-checking=release
Thread model: posix
gcc version 4.8.0 20130411 (prerelease) (GCC)
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/56971] GCC claims a friend function to be overloaded, but it isn't
2013-04-15 16:15 [Bug c++/56971] New: GCC claims a friend function to be overloaded, but it isn't henning@still-hidden.de
2013-04-15 16:19 ` [Bug c++/56971] " henning@still-hidden.de
@ 2013-04-25 10:55 ` daniel.kruegler at googlemail dot com
2013-04-25 11:20 ` [Bug c++/56971] [4.9 Regression] " redi at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: daniel.kruegler at googlemail dot com @ 2013-04-25 10:55 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56971
Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel.kruegler at
| |googlemail dot com
--- Comment #2 from Daniel Krügler <daniel.kruegler at googlemail dot com> 2013-04-25 10:55:08 UTC ---
For gcc 4.9.0 20130421 (experimental) this gives me an ICE:
"main.cpp|8|internal compiler error: canonical types differ for identical types
b<P> and b<FriendP>|"
>From gcc-bugs-return-420947-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Apr 25 11:04:35 2013
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From: "daniel.kruegler at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/56976] using braces to initialize a reference forces copy construction
Date: Thu, 25 Apr 2013 11:04:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56976
Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel.kruegler at
| |googlemail dot com
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> 2013-04-25 11:04:31 UTC ---
It seems to me as if you are observing the core language issue
http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_active.html#1604
>From gcc-bugs-return-420948-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Apr 25 11:04:46 2013
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From: "jb at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/57028] [4.9 regression] Fortran bootstrap fails due to missing zlib.h
Date: Thu, 25 Apr 2013 11:04:00 -0000
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Janne Blomqvist <jb at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL|http://gcc.gnu.org/ml/gcc-p |http://gcc.gnu.org/ml/gcc-p
|atches/2013-04/msg01464.htm |atches/2013-04/msg01517.htm
|l |l
--- Comment #6 from Janne Blomqvist <jb at gcc dot gnu.org> 2013-04-25 11:04:42 UTC ---
Updated patch at http://gcc.gnu.org/ml/gcc-patches/2013-04/msg01517.html
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/56971] [4.9 Regression] GCC claims a friend function to be overloaded, but it isn't
2013-04-15 16:15 [Bug c++/56971] New: GCC claims a friend function to be overloaded, but it isn't henning@still-hidden.de
2013-04-15 16:19 ` [Bug c++/56971] " henning@still-hidden.de
2013-04-25 10:55 ` daniel.kruegler at googlemail dot com
@ 2013-04-25 11:20 ` redi at gcc dot gnu.org
2013-05-15 13:31 ` rguenth at gcc dot gnu.org
2013-05-24 20:12 ` jason at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2013-04-25 11:20 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56971
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-04-25
Summary|GCC claims a friend |[4.9 Regression] GCC claims
|function to be overloaded, |a friend function to be
|but it isn't |overloaded, but it isn't
Ever Confirmed|0 |1
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2013-04-25 11:20:33 UTC ---
ICE confirmed with trunk, which is a regression:
ice.c: In instantiation of 'struct b<rp>':
ice.c:16:11: required from here
ice.c:8:17: internal compiler error: canonical types differ for identical types
b<P> and b<FriendP>
friend void f(b<FriendP> from);
^
0x64861b comptypes
../../gcc-4.9/gcc/cp/typeck.c:1395
0x64861b comptypes
../../gcc-4.9/gcc/cp/typeck.c:1369
0x649b33 compparms(tree_node const*, tree_node const*)
../../gcc-4.9/gcc/cp/typeck.c:1501
0x54526b decls_match(tree_node*, tree_node*)
../../gcc-4.9/gcc/cp/decl.c:1026
0x545cc4 duplicate_decls(tree_node*, tree_node*, bool)
../../gcc-4.9/gcc/cp/decl.c:1241
0x6e9801 push_overloaded_decl_1
../../gcc-4.9/gcc/cp/name-lookup.c:2288
0x6e9801 push_overloaded_decl
../../gcc-4.9/gcc/cp/name-lookup.c:2383
0x6eb1ed pushdecl_maybe_friend_1
../../gcc-4.9/gcc/cp/name-lookup.c:885
0x6eb1ed pushdecl_maybe_friend(tree_node*, bool)
../../gcc-4.9/gcc/cp/name-lookup.c:1219
0x6eca79 pushdecl_with_scope_1
../../gcc-4.9/gcc/cp/name-lookup.c:2206
0x6ed7ab pushdecl_with_scope(tree_node*, cp_binding_level*, bool)
../../gcc-4.9/gcc/cp/name-lookup.c:2220
0x6ed86d pushdecl_namespace_level(tree_node*, bool)
../../gcc-4.9/gcc/cp/name-lookup.c:3761
0x5b9e69 tsubst_friend_function
../../gcc-4.9/gcc/cp/pt.c:8137
0x5bb493 instantiate_class_template_1
../../gcc-4.9/gcc/cp/pt.c:8997
0x5bb493 instantiate_class_template(tree_node*)
../../gcc-4.9/gcc/cp/pt.c:9081
0x6439bb complete_type
../../gcc-4.9/gcc/cp/typeck.c:131
0x6439bb complete_type
../../gcc-4.9/gcc/cp/typeck.c:105
0x534f27 start_decl_1(tree_node*, bool)
../../gcc-4.9/gcc/cp/decl.c:4666
0x558990 start_decl(cp_declarator const*, cp_decl_specifier_seq*, int,
tree_node*, tree_node*, tree_node**)
../../gcc-4.9/gcc/cp/decl.c:4629
0x618430 cp_parser_init_declarator
../../gcc-4.9/gcc/cp/parser.c:16138
4.6, 4.7 and 4.8 reject it, which is better than an ICE but possibly still
wrong.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/56971] [4.9 Regression] GCC claims a friend function to be overloaded, but it isn't
2013-04-15 16:15 [Bug c++/56971] New: GCC claims a friend function to be overloaded, but it isn't henning@still-hidden.de
` (2 preceding siblings ...)
2013-04-25 11:20 ` [Bug c++/56971] [4.9 Regression] " redi at gcc dot gnu.org
@ 2013-05-15 13:31 ` rguenth at gcc dot gnu.org
2013-05-24 20:12 ` jason at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-05-15 13:31 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56971
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.9.0
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/56971] [4.9 Regression] GCC claims a friend function to be overloaded, but it isn't
2013-04-15 16:15 [Bug c++/56971] New: GCC claims a friend function to be overloaded, but it isn't henning@still-hidden.de
` (3 preceding siblings ...)
2013-05-15 13:31 ` rguenth at gcc dot gnu.org
@ 2013-05-24 20:12 ` jason at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jason at gcc dot gnu.org @ 2013-05-24 20:12 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56971
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |jason at gcc dot gnu.org
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 4.9.
^ permalink raw reply [flat|nested] 6+ messages in thread
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2013-04-15 16:15 [Bug c++/56971] New: GCC claims a friend function to be overloaded, but it isn't henning@still-hidden.de
2013-04-15 16:19 ` [Bug c++/56971] " henning@still-hidden.de
2013-04-25 10:55 ` daniel.kruegler at googlemail dot com
2013-04-25 11:20 ` [Bug c++/56971] [4.9 Regression] " redi at gcc dot gnu.org
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