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re PR fortran/90561 (ICE in gimplify_var_or_parm_decl, at gimplify.c:2747) 

2019-08-13  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/90561
	* trans.h (gfc_evaluate_now_function_scope): New function.
	* trans.c (gfc_evaluate_now_function_scope): New function.
	* trans-expr.c (gfc_trans_assignment): Use it.

2019-08-13  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/90561
	* gfortran.dg/deferred_character_34.f90: New test.

From-SVN: r274383
This commit is contained in:
Thomas Koenig 2019-08-13 15:08:10 +00:00
parent cb0a83f343
commit fb3f5eae9f
4 changed files with 26 additions and 1 deletions
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3
gcc/fortran/trans-expr.c
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@ -10796,7 +10796,8 @@ gfc_trans_assignment_1 (gfc_expr * expr1, gfc_expr * expr2, bool init_flag,
if (expr1->ts.deferred
&& gfc_expr_attr (expr1).allocatable
&& gfc_check_dependency (expr1, expr2, true))
rse.string_length = gfc_evaluate_now (rse.string_length, &rse.pre);
rse.string_length =
gfc_evaluate_now_function_scope (rse.string_length, &rse.pre);
string_length = rse.string_length;
}
else

13
gcc/fortran/trans.c
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@ -118,6 +118,19 @@ gfc_evaluate_now (tree expr, stmtblock_t * pblock)
return gfc_evaluate_now_loc (input_location, expr, pblock);
}
/* Like gfc_evaluate_now, but add the created variable to the
function scope. */
tree
gfc_evaluate_now_function_scope (tree expr, stmtblock_t * pblock)
{
tree var;
var = gfc_create_var_np (TREE_TYPE (expr), NULL);
gfc_add_decl_to_function (var);
gfc_add_modify (pblock, var, expr);
return var;
}
/* Build a MODIFY_EXPR node and add it to a given statement block PBLOCK.
A MODIFY_EXPR is an assignment:

1
gcc/fortran/trans.h
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@ -507,6 +507,7 @@ void gfc_conv_label_variable (gfc_se * se, gfc_expr * expr);
/* If the value is not constant, Create a temporary and copy the value. */
tree gfc_evaluate_now_loc (location_t, tree, stmtblock_t *);
tree gfc_evaluate_now (tree, stmtblock_t *);
tree gfc_evaluate_now_function_scope (tree, stmtblock_t *);
/* Find the appropriate variant of a math intrinsic. */
tree gfc_builtin_decl_for_float_kind (enum built_in_function, int);

10
gcc/testsuite/gfortran.dg/deferred_character_34.f90 Normal file
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@ -0,0 +1,10 @@
! { dg-do run }
! PR fortran/90561
! This used to ICE.
! Original test case by Gerhard Steinmetz.
program p
character(:), allocatable :: z(:)
z = [character(2):: 'ab', 'xy']
z = z(2)
if (any(z /= 'xy')) stop 1
end