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* [Bug fortran/47425] New: Array constructor with type-spec: Fails with more complicated length type expr
@ 2011-01-24 0:57 burnus at gcc dot gnu.org
2011-06-30 19:42 ` [Bug fortran/47425] " dominiq at lps dot ens.fr
2013-07-15 20:33 ` burnus at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: burnus at gcc dot gnu.org @ 2011-01-24 0:57 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47425
Summary: Array constructor with type-spec: Fails with more
complicated length type expr
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: burnus@gcc.gnu.org
http://groups.google.com/group/comp.lang.fortran/browse_thread/thread/397b3520a4dd1a9f#
James Van Buskirk found an example for an Array constructor with type-spec,
which fails at gimpling. Full example: See c.l.f. Short example:
subroutine sub1(L,s,e)
implicit none
character(*) L
integer s,e
if(any(L(s:e+1) == [character(len(L(s:e))+1)::'that','those'])) then
end if
end subroutine sub1
Gives:
test.f90:5:0: error: size of variable 'A.1' is too large
Looking at the dump, one sees that the character length is strangely optimized
away into two uninitialized variables. The dump has:
sub1 (character(kind=1)[1:_l] & restrict l, integer(kind=4) & restrict s,
integer(kind=4) & restrict e, integer(kind=4) _l)
{
bit_size_type D.1546;
<unnamed-unsigned:64> D.1547;
D.1546 = (bit_size_type) ((<unnamed-unsigned:64>) _l * 8);
D.1547 = (<unnamed-unsigned:64>) (_l + -1) + 1;
{
static character(kind=1) A.1[2][1:MAX_EXPR <(D.1541 - D.1540) + 1, 0> + 1]
= {"that", "those"};
and only much later:
D.1540 = *s;
D.1541 = *e;
^ permalink raw reply [flat|nested] 3+ messages in thread
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2011-01-24 0:57 [Bug fortran/47425] New: Array constructor with type-spec: Fails with more complicated length type expr burnus at gcc dot gnu.org
2011-06-30 19:42 ` [Bug fortran/47425] " dominiq at lps dot ens.fr
2013-07-15 20:33 ` burnus at gcc dot gnu.org
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