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* [Bug c++/99864] New: Abbreviated member function template doesn't compile with default function argument
@ 2021-04-01 9:17 stream009 at gmail dot com
2021-04-09 14:51 ` [Bug c++/99864] " ppalka at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: stream009 at gmail dot com @ 2021-04-01 9:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99864
Bug ID: 99864
Summary: Abbreviated member function template doesn't compile
with default function argument
Product: gcc
Version: 10.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: stream009 at gmail dot com
Target Milestone: ---
I got a strange compile error when I use abbreviated function template and
default function argument on member function.
Compiler version: gcc 10.2
Compiler Exploer Link: https://godbolt.org/z/7cMTP875E
// begin source
class foo
{
public:
int mem_fn(auto a, int b = 0);
};
inline int foo::
mem_fn(auto a, int b/*= 0*/)
{
return a + b;
}
int main()
{
foo x;
x.mem_fn(1);
}
// end source
// begin error message
16:15: error: call to 'int foo::mem_fn(auto:2, int) [with auto:1 = int]' uses
the default argument for parameter 2, which is not yet defined
16 | x.mem_fn(1);
| ^
// end error message
- It does compile if function definition is in the class definition
(https://godbolt.org/z/T3ncebTqz)
- It does compile if function is not member function
(https://godbolt.org/z/o8Wc98xE4)
- It does compile if member function is not function template
(https://godbolt.org/z/vWTxTbjoY)
- It does compile if member function is not abbreviated template function
(https://godbolt.org/z/qqzK9E6qc)
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/99864] Abbreviated member function template doesn't compile with default function argument
2021-04-01 9:17 [Bug c++/99864] New: Abbreviated member function template doesn't compile with default function argument stream009 at gmail dot com
@ 2021-04-09 14:51 ` ppalka at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: ppalka at gcc dot gnu.org @ 2021-04-09 14:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99864
Patrick Palka <ppalka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
CC| |ppalka at gcc dot gnu.org
--- Comment #1 from Patrick Palka <ppalka at gcc dot gnu.org> ---
Thanks for the report. It looks like this testcase is essentially comment 5 in
PR99806, which has recently been fixed there, so marking as a dup.
*** This bug has been marked as a duplicate of bug 99806 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-04-01 9:17 [Bug c++/99864] New: Abbreviated member function template doesn't compile with default function argument stream009 at gmail dot com
2021-04-09 14:51 ` [Bug c++/99864] " ppalka at gcc dot gnu.org
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