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* [Bug c++/66832] New: [concepts] parameters in requires clauses conflicting with function arguments
@ 2015-07-10 17:42 eric.niebler at gmail dot com
2015-07-10 22:46 ` [Bug c++/66832] " jason at gcc dot gnu.org
2015-07-10 22:52 ` jason at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: eric.niebler at gmail dot com @ 2015-07-10 17:42 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66832
Bug ID: 66832
Summary: [concepts] parameters in requires clauses conflicting
with function arguments
Product: gcc
Version: c++-concepts
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: eric.niebler at gmail dot com
Target Milestone: ---
template <class T, class U, unsigned N>
requires requires (T& t, U &u) { t.foo(); u.foo(); }
void foo_all( T (&t)[N], U (&u)[N] ) {
for(auto& x : t)
x.foo();
for(auto& x : u)
x.foo();
}
struct S {
void foo() {}
};
int main() {
S rg[4] {};
foo_all(rg, rg);
}
Yields:
/cygdrive/c/Users/eric/Code/cmcstl2/test/iterator.cpp:4:23: error: conflicting
declaration ‘T (& t)[N]’
void foo_all( T (&t)[N], U (&u)[N] ) {
^
/cygdrive/c/Users/eric/Code/cmcstl2/test/iterator.cpp:3:25: note: previous
declaration as ‘T& t’
requires requires (T& t, U &u) { t.foo(); u.foo(); }
^
/cygdrive/c/Users/eric/Code/cmcstl2/test/iterator.cpp: In function ‘void
foo_all(U (&)[N])’:
/cygdrive/c/Users/eric/Code/cmcstl2/test/iterator.cpp:5:18: error: use of
parameter outside function body before ‘)’ token
for(auto& x : t)
^
/cygdrive/c/Users/eric/Code/cmcstl2/test/iterator.cpp: In function ‘int
main()’:
/cygdrive/c/Users/eric/Code/cmcstl2/test/iterator.cpp:17:17: error: no matching
function for call to ‘foo_all(S [4], S [4])’
foo_all(rg, rg);
^
/cygdrive/c/Users/eric/Code/cmcstl2/test/iterator.cpp:4:6: note: candidate:
template<class T, class U, unsigned int N> requires predicate(r
equires(T& t, U& u) {t->foo();u->foo();}) void foo_all(U (&)[N])
void foo_all( T (&t)[N], U (&u)[N] ) {
^
/cygdrive/c/Users/eric/Code/cmcstl2/test/iterator.cpp:4:6: note: template
argument deduction/substitution failed:
/cygdrive/c/Users/eric/Code/cmcstl2/test/iterator.cpp:17:17: note: candidate
expects 1 argument, 2 provided
foo_all(rg, rg);
^
>From gcc-bugs-return-492006-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 10 17:47:18 2015
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From: "damian at sourceryinstitute dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/66833] New: [4.9/5.1/6.0]: ICE on assumed-rank character actual argument to intrinsic functions
Date: Fri, 10 Jul 2015 17:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf833
Bug ID: 66833
Summary: [4.9/5.1/6.0]: ICE on assumed-rank character actual
argument to intrinsic functions
Product: gcc
Version: 4.9.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: damian at sourceryinstitute dot org
Target Milestone: ---
Invoking a rank, lbound, ubound, or c_loc with an assumed-rank character array
actual argument causes an ICE with gfortran 4.9.3, 5.1.0, or 6.0.0. I wonder
if this is related to Bug 5733.
$ cat opencoarrays.f90
subroutine gfc_descriptor_c_char(a)
character a(..)
print *,rank(a) ! ICE (also for lbound, ubound, and c_loc)
end subroutine
$ gfortran -c opencoarrays.f90
opencoarrays.f90: In function 'gfc_descriptor_c_char':
opencoarrays.f90:3:0: internal compiler error: in gfc_conv_descriptor_dtype, at
fortran/trans-array.c:239
print *,rank(a) ! ICE (also for lbound, ubound, and c_loc)
^
opencoarrays.f90:3:0: internal compiler error: Abort trap: 6
gfortran: internal compiler error: Abort trap: 6 (program f951)
Abort trap: 6
$ gfortran --version
GNU Fortran (MacPorts gcc49 4.9.3_0) 4.9.3
^ permalink raw reply [flat|nested] 3+ messages in thread
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2015-07-10 17:42 [Bug c++/66832] New: [concepts] parameters in requires clauses conflicting with function arguments eric.niebler at gmail dot com
2015-07-10 22:46 ` [Bug c++/66832] " jason at gcc dot gnu.org
2015-07-10 22:52 ` jason at gcc dot gnu.org
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