This patch and test case regression tested on x86-64.
Will commit under simple/obvious rule. Regards, Jerry 2016-07-04 Jerry DeLisle <jvdeli...@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