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[patch, fortran] Bug 66575 - Endless compilation on missing end interface
- From: Jerry DeLisle <jvdelisle at charter dot net>
- To: fortran at gcc dot gnu dot org
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Mon, 4 Jul 2016 14:01:46 -0700
- Subject: [patch, fortran] Bug 66575 - Endless compilation on missing end interface
- Authentication-results: sourceware.org; auth=none
This patch and test case regression tested on x86-64.
Will commit under simple/obvious rule.
Regards,
Jerry
2016-07-04 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR fortran/66575
* decl.c (match_procedure_interface): Exit loop if procedure
interface refers to itself.
diff --git a/gcc/fortran/decl.c b/gcc/fortran/decl.c
index 724f14f7..1b62833f 100644
--- a/gcc/fortran/decl.c
+++ b/gcc/fortran/decl.c
@@ -5454,7 +5454,8 @@ match_procedure_interface (gfc_symbol **proc_if)
/* Resolve interface if possible. That way, attr.procedure is only set
if it is declared by a later procedure-declaration-stmt, which is
invalid per F08:C1216 (cf. resolve_procedure_interface). */
- while ((*proc_if)->ts.interface)
+ while ((*proc_if)->ts.interface
+ && *proc_if != (*proc_if)->ts.interface)
*proc_if = (*proc_if)->ts.interface;
if ((*proc_if)->attr.flavor == FL_UNKNOWN
! { dg-do compile }
! Bug 66575 - Endless compilation on missing end interface
program p
procedure(g) :: g ! { dg-error "may not be used as its own interface" }
procedure(g) ! { dg-error "Syntax error in PROCEDURE statement" }
end