Fortran: fix bogus dependency check in ALLOCATE statement [PR60560]

Restrict dependency check of ALLOCATE object to variables in the same
statement, but exclude check of length type parameter that might be
set in the declaration and could lead to a bogus cyclic dependency.

	PR fortran/60560

gcc/fortran/ChangeLog:

	* expr.cc (gfc_traverse_expr): Do not descend into length type
	parameter for negative values of auxiliary parameter f.
	* resolve.cc (gfc_find_var_in_expr): New helper function to check
	dependence of an expression on given variable.
	(resolve_allocate_expr): Use it to determine if array bounds in an
	ALLOCATE statement depend explicitly on a variable.

gcc/testsuite/ChangeLog:

	* gfortran.dg/allocate_error_8.f90: New test.

0 files changed, 0 insertions, 0 deletions