http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46974
kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org
--- Comment #1 from kargl at gcc dot gnu.org 2010-12-17 23:15:27 UTC ---
The issues appears to have come into gfortran with pault's
initial commit of Brook's gfc_simplify_transfer. This
is revision 124759.
Consider
program z
use iso_c_binding
type(c_ptr) m
m = transfer(12345, m)
end program z
The culprit is the second test in
if (!gfc_is_constant_expr (source)
|| (gfc_init_expr_flag && !gfc_is_constant_expr (mold))
|| !gfc_is_constant_expr (size))
return NULL;
Here, gfc_init_expr_flag = 0 and mold is EXPR_VARIABLE, which
yields !gfc_is_constant_expr (mold) = 1. Clearly (0 && anything)
is going to be 0. So, gfortran tries to simplify the expression.
If gfc_init_expr_flag is removed, the code compiles.
Anyone know why this flag is needed?
