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* [Bug c++/16965] New: [3.4/3.5 regression] Confusing mismatch in error messages
@ 2004-08-10 14:31 bangerth at dealii dot org
2004-08-10 14:31 ` [Bug c++/16965] " bangerth at dealii dot org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: bangerth at dealii dot org @ 2004-08-10 14:31 UTC (permalink / raw)
To: gcc-bugs
Consider this little example, derived from PR 16963:
-------------
template <typename T> struct B {
static int Bar(T);
};
struct D : B<int>, B<char> {};
int i1 = D().Bar(1);
int i2 = D::Bar(2);
-------------
Note that Bar() is static, so trying to call it via D().Bar or D::Bar
shouldn't make a difference (for a moment ignore the fact that the
code doesn't compile at all, probably for a good reason, as discussed
in PR 16963). However, we get this confusing mismatch in error messages:
g/x> /home/bangerth/bin/gcc-3.5-pre/bin/c++ -c x.cc
x.cc:6: error: request for member `Bar' is ambiguous
x.cc:2: error: candidates are: static int B<T>::Bar(T) [with T = char]
x.cc:2: error: static int B<T>::Bar(T) [with T = int]
x.cc:7: error: `Bar' is not a member of `D'
The error message in line 7 is clearly not helpful, and wrong above
that. It should simply read the same as the ambiguity message in line 6.
This is a regression in 3.4 and mainline over previous versions that
simply printed as expected:
g/x> /home/bangerth/bin/gcc-3.3*/bin/c++ -c x.cc
x.cc:6: error: request for member `Bar' is ambiguous
x.cc:2: error: candidates are: static int B<T>::Bar(T) [with T = char]
x.cc:2: error: static int B<T>::Bar(T) [with T = int]
x.cc:7: error: request for member `Bar' is ambiguous
x.cc:2: error: candidates are: static int B<T>::Bar(T) [with T = char]
x.cc:2: error: static int B<T>::Bar(T) [with T = int]
W.
--
Summary: [3.4/3.5 regression] Confusing mismatch in error
messages
Product: gcc
Version: 3.4.1
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: bangerth at dealii dot org
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16965
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug c++/16965] [3.4/3.5 regression] Confusing mismatch in error messages 2004-08-10 14:31 [Bug c++/16965] New: [3.4/3.5 regression] Confusing mismatch in error messages bangerth at dealii dot org @ 2004-08-10 14:31 ` bangerth at dealii dot org 2004-08-15 5:51 ` pinskia at gcc dot gnu dot org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: bangerth at dealii dot org @ 2004-08-10 14:31 UTC (permalink / raw) To: gcc-bugs -- What |Removed |Added ---------------------------------------------------------------------------- Known to fail| |3.4.1 3.5.0 Known to work| |2.95 3.2 3.3 Target Milestone|--- |3.4.2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16965 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/16965] [3.4/3.5 regression] Confusing mismatch in error messages 2004-08-10 14:31 [Bug c++/16965] New: [3.4/3.5 regression] Confusing mismatch in error messages bangerth at dealii dot org 2004-08-10 14:31 ` [Bug c++/16965] " bangerth at dealii dot org @ 2004-08-15 5:51 ` pinskia at gcc dot gnu dot org 2004-08-17 7:24 ` mmitchel at gcc dot gnu dot org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-08-15 5:51 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-08-15 05:51 ------- Confirmed. -- What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Ever Confirmed| |1 Last reconfirmed|0000-00-00 00:00:00 |2004-08-15 05:51:30 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16965 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/16965] [3.4/3.5 regression] Confusing mismatch in error messages 2004-08-10 14:31 [Bug c++/16965] New: [3.4/3.5 regression] Confusing mismatch in error messages bangerth at dealii dot org 2004-08-10 14:31 ` [Bug c++/16965] " bangerth at dealii dot org 2004-08-15 5:51 ` pinskia at gcc dot gnu dot org @ 2004-08-17 7:24 ` mmitchel at gcc dot gnu dot org 2004-08-17 17:32 ` cvs-commit at gcc dot gnu dot org 2004-08-17 17:37 ` mmitchel at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: mmitchel at gcc dot gnu dot org @ 2004-08-17 7:24 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From mmitchel at gcc dot gnu dot org 2004-08-17 07:24 ------- This is not worth fixing for GCC 3.4.x. Retargeted at GCC 3.5. I am working on a fix. -- What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|unassigned at gcc dot gnu |mark at codesourcery dot com |dot org | Status|NEW |ASSIGNED Target Milestone|3.4.2 |3.5.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16965 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/16965] [3.4/3.5 regression] Confusing mismatch in error messages 2004-08-10 14:31 [Bug c++/16965] New: [3.4/3.5 regression] Confusing mismatch in error messages bangerth at dealii dot org ` (2 preceding siblings ...) 2004-08-17 7:24 ` mmitchel at gcc dot gnu dot org @ 2004-08-17 17:32 ` cvs-commit at gcc dot gnu dot org 2004-08-17 17:37 ` mmitchel at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: cvs-commit at gcc dot gnu dot org @ 2004-08-17 17:32 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-08-17 17:32 ------- Subject: Bug 16965 CVSROOT: /cvs/gcc Module name: gcc Changes by: mmitchel@gcc.gnu.org 2004-08-17 17:32:37 Modified files: gcc/cp : ChangeLog cp-tree.h name-lookup.c parser.c pt.c semantics.c gcc/testsuite : ChangeLog Added files: gcc/testsuite/g++.dg/parse: error17.C Log message: PR c++/16965 * cp-tree.h (qualified_name_lookup_error): Add parameter. * name-lookup.c (do_class_using_decl): Restrict set of entities passed to cp_emit_debug_info_for_using more carefully. (lookup_qualified_name): Allow lookup_member to return sets of ambiguous entries. * parser.c (cp_parser_lookup_name): Add ambiguous_p parameter. (cp_parser_primary_expression): Handle ambiguous lookups. (cp_parser_template_name): Adjust use of cp_parser_lookup_name. (cp_parser_template_argument): Likewise. (cp_parser_elaborate_type_specifier): Likewise. (cp_parser_namespace_name): Likewise. (cp_parser_class_name): Likewise. (cp_parser_lookup_name_simple): Likewise. * pt.c (tsubst_qualified_id): Handle ambiguous results. (tsubst_expr): Likewise. * semantics.c (qualified_name_lookup_error): Add decl paramter. For ambiguous lookups, print candidates. PR c++/16965 * g++.dg/parse/error17.C: New test. Patches: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.4277&r2=1.4278 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/cp-tree.h.diff?cvsroot=gcc&r1=1.1030&r2=1.1031 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/name-lookup.c.diff?cvsroot=gcc&r1=1.81&r2=1.82 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/parser.c.diff?cvsroot=gcc&r1=1.236&r2=1.237 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/pt.c.diff?cvsroot=gcc&r1=1.905&r2=1.906 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/semantics.c.diff?cvsroot=gcc&r1=1.423&r2=1.424 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4149&r2=1.4150 http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/parse/error17.C.diff?cvsroot=gcc&r1=NONE&r2=1.1 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16965 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/16965] [3.4/3.5 regression] Confusing mismatch in error messages 2004-08-10 14:31 [Bug c++/16965] New: [3.4/3.5 regression] Confusing mismatch in error messages bangerth at dealii dot org ` (3 preceding siblings ...) 2004-08-17 17:32 ` cvs-commit at gcc dot gnu dot org @ 2004-08-17 17:37 ` mmitchel at gcc dot gnu dot org 4 siblings, 0 replies; 6+ messages in thread From: mmitchel at gcc dot gnu dot org @ 2004-08-17 17:37 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From mmitchel at gcc dot gnu dot org 2004-08-17 17:37 ------- Fixed in GCC 3.5.0. -- What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16965 ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2004-08-17 17:37 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2004-08-10 14:31 [Bug c++/16965] New: [3.4/3.5 regression] Confusing mismatch in error messages bangerth at dealii dot org 2004-08-10 14:31 ` [Bug c++/16965] " bangerth at dealii dot org 2004-08-15 5:51 ` pinskia at gcc dot gnu dot org 2004-08-17 7:24 ` mmitchel at gcc dot gnu dot org 2004-08-17 17:32 ` cvs-commit at gcc dot gnu dot org 2004-08-17 17:37 ` mmitchel at gcc dot gnu dot org
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