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* [Bug c++/58591] New: GCC emits bad mangling for template function with a parameter pack
@ 2013-10-01 22:43 ccoutant at gcc dot gnu.org
2013-10-01 22:49 ` [Bug c++/58591] " ccoutant at gcc dot gnu.org
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: ccoutant at gcc dot gnu.org @ 2013-10-01 22:43 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58591
Bug ID: 58591
Summary: GCC emits bad mangling for template function with a
parameter pack
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ccoutant at gcc dot gnu.org
Created attachment 30944
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30944&action=edit
Reduced test case
This is reduced from <bits/stl_construct.h>.
Compiling the attached file with:
$ g++ -S -std=c++11 mangle-test.cc
Produces the following mangled name for the function Construct:
_Z9ConstructI1AIiiEEvPT_DpOT0_
This cannot be demangled, because the T0_ reference at the end refers to a
non-existent second template parameter. Removing the whole parameter pack from
the mangling reveals a bogus mangling in the template parameter section:
$ c++filt _Z9ConstructI1AIiiEEvPT_
void Construct<A<int, int> >(A<int, int>*)
The type A is not a template -- the two ints together form the parameter pack
that is the second template parameter.
^ permalink raw reply [flat|nested] 4+ messages in thread* [Bug c++/58591] GCC emits bad mangling for template function with a parameter pack
2013-10-01 22:43 [Bug c++/58591] New: GCC emits bad mangling for template function with a parameter pack ccoutant at gcc dot gnu.org
@ 2013-10-01 22:49 ` ccoutant at gcc dot gnu.org
2013-10-04 20:37 ` ccoutant at gcc dot gnu.org
2013-10-04 20:45 ` ccoutant at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: ccoutant at gcc dot gnu.org @ 2013-10-01 22:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58591
--- Comment #2 from Cary Coutant <ccoutant at gcc dot gnu.org> ---
I *think* the correct mangling should be this:
$ c++filt _Z9ConstructI1AiiEvPT_DpOT0_
void Construct<A, int, int>(A*, (int&&)...)
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/58591] GCC emits bad mangling for template function with a parameter pack
2013-10-01 22:43 [Bug c++/58591] New: GCC emits bad mangling for template function with a parameter pack ccoutant at gcc dot gnu.org
2013-10-01 22:49 ` [Bug c++/58591] " ccoutant at gcc dot gnu.org
@ 2013-10-04 20:37 ` ccoutant at gcc dot gnu.org
2013-10-04 20:45 ` ccoutant at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: ccoutant at gcc dot gnu.org @ 2013-10-04 20:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58591
--- Comment #3 from Cary Coutant <ccoutant at gcc dot gnu.org> ---
I think the template argument descriptors should be "I1AJiiEE". This produces a
demangling that looks right:
$ c++filt _Z9ConstructI1AJiiEEvPT_DpOT0_
void Construct<A, int, int>(A*, int&&, int&&)
And running this test case through LLVM, that's the mangled name it produces.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/58591] GCC emits bad mangling for template function with a parameter pack
2013-10-01 22:43 [Bug c++/58591] New: GCC emits bad mangling for template function with a parameter pack ccoutant at gcc dot gnu.org
2013-10-01 22:49 ` [Bug c++/58591] " ccoutant at gcc dot gnu.org
2013-10-04 20:37 ` ccoutant at gcc dot gnu.org
@ 2013-10-04 20:45 ` ccoutant at gcc dot gnu.org
2 siblings, 0 replies; 4+ messages in thread
From: ccoutant at gcc dot gnu.org @ 2013-10-04 20:45 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58591
Cary Coutant <ccoutant at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #4 from Cary Coutant <ccoutant at gcc dot gnu.org> ---
Never mind, I see now that this was fixed with -fabi-version=6.
*** This bug has been marked as a duplicate of bug 51322 ***
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-10-04 20:45 UTC | newest]
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2013-10-01 22:43 [Bug c++/58591] New: GCC emits bad mangling for template function with a parameter pack ccoutant at gcc dot gnu.org
2013-10-01 22:49 ` [Bug c++/58591] " ccoutant at gcc dot gnu.org
2013-10-04 20:37 ` ccoutant at gcc dot gnu.org
2013-10-04 20:45 ` ccoutant at gcc dot gnu.org
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