re PR fortran/50405 (allocation LOOP or SIGSEGV)

2013-05-27  Bud Davis  <jmdavis@link.com>

        PR fortran/50405
        * resolve.c (resolve_formal_arglist): Detect error when an
        * argument
        has the same name as the function.

2013-05-27  Bud Davis  <jmdavis@link.com>

        PR fortran/50405
        * gfortran.dg/stfunc_8.f90: New.

From-SVN: r199358

gcc/fortran/ChangeLog

+2013-05-27  Bud Davis  <jmdavis@link.com>
+
+	PR fortran/50405
+	* resolve.c (resolve_formal_arglist): Detect error when an argument
+	has the same name as the function.
+
 2013-05-27  Tobias Burnus  <burnus@net-b.de>
 
 	* expr.c (gfc_build_intrinsic_call): Make symbol as attr.artificial.

gcc/fortran/resolve.c

@@ -306,6 +306,14 @@ resolve_formal_arglist (gfc_symbol *proc)
 	       && !resolve_procedure_interface (sym))
 	return;
 
+      if (strcmp (proc->name, sym->name) == 0)
+        {
+          gfc_error ("Self-referential argument "
+                     "'%s' at %L is not allowed", sym->name,
+                     &proc->declared_at);
+          return;
+        }
+
       if (sym->attr.if_source != IFSRC_UNKNOWN)
 	resolve_formal_arglist (sym);
 

gcc/testsuite/ChangeLog

+2013-05-27  Bud Davis  <jmdavis@link.com>
+
+	PR fortran/50405
+	* gfortran.dg/stfunc_8.f90: New.
+
 2013-05-27  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/57343

gcc/testsuite/gfortran.dg/stfunc_8.f90

+! { dg-do compile }
+! { dg-options "" }
+!
+! PR fortran/50405
+!
+! Submitted by zeccav@gmail.com
+!
+       f(f) = 0 ! { dg-error "Self-referential argument" }
+       end