Regression tested on trunk. OK to commit?
The patch is self-explanatory.
Steven G. Kargl <ka...@gcc.gnu.org>
PR fortran/66045
* expr.c (gfc_check_assign): Check for assignment of NULL() instead
of the (intended) pointer assignment.
2015-05-XX Steven G. Kargl <ka...@gcc.gnu.org>
PR fortran/66045
* gfortran.dg/null1.f90: New test.
--
Steve
Index: gcc/fortran/expr.c
===================================================================
--- gcc/fortran/expr.c (revision 223094)
+++ gcc/fortran/expr.c (working copy)
@@ -3118,19 +3118,22 @@ gfc_check_assign (gfc_expr *lvalue, gfc_
bad_proc = true;
/* (ii) The assignment is in the main program; or */
- if (gfc_current_ns->proc_name->attr.is_main_program)
+ if (gfc_current_ns->proc_name
+ && gfc_current_ns->proc_name->attr.is_main_program)
bad_proc = true;
/* (iii) A module or internal procedure... */
- if ((gfc_current_ns->proc_name->attr.proc == PROC_INTERNAL
- || gfc_current_ns->proc_name->attr.proc == PROC_MODULE)
+ if (gfc_current_ns->proc_name
+ && (gfc_current_ns->proc_name->attr.proc == PROC_INTERNAL
+ || gfc_current_ns->proc_name->attr.proc == PROC_MODULE)
&& gfc_current_ns->parent
&& (!(gfc_current_ns->parent->proc_name->attr.function
|| gfc_current_ns->parent->proc_name->attr.subroutine)
|| gfc_current_ns->parent->proc_name->attr.is_main_program))
{
/* ... that is not a function... */
- if (!gfc_current_ns->proc_name->attr.function)
+ if (gfc_current_ns->proc_name
+ && !gfc_current_ns->proc_name->attr.function)
bad_proc = true;
/* ... or is not an entry and has a different name. */
Index: gcc/testsuite/gfortran.dg/null1.f90
===================================================================
--- gcc/testsuite/gfortran.dg/null1.f90 (revision 0)
+++ gcc/testsuite/gfortran.dg/null1.f90 (working copy)
@@ -0,0 +1,9 @@
+! { dg-do compile }
+! PR fortran/66045
+!
+! Original code from Gerhard Steinmetz
+! <gerhard dot steinmetz dot fortran at t-online dot de>
+program p
+ contains
+ integer :: null=null() ! { dg-error "NULL appears on right-hand side" }
+end
