re PR fortran/39334 (Recusive parameter kind produces segfault)

2009-07-10  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/39334
	* primary.c (match_kind_param): Return MATCH_NO if the symbol
	has no value.

2009-07-10  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/39334
	* gfortran.dg/recursive_parameter_1.f90: New test.

From-SVN: r149456

gcc/fortran/ChangeLog

+2009-07-10  Paul Thomas  <pault@gcc.gnu.org>
+
+	PR fortran/39334
+	* primary.c (match_kind_param): Return MATCH_NO if the symbol
+	has no value.
+
 2008-07-09  Paul Thomas  <pault@gcc.gnu.org>
 
 	PR fortran/40629

gcc/fortran/primary.c

@@ -57,6 +57,9 @@ match_kind_param (int *kind)
   if (sym->attr.flavor != FL_PARAMETER)
     return MATCH_NO;
 
+  if (sym->value == NULL)
+    return MATCH_NO;
+
   p = gfc_extract_int (sym->value, kind);
   if (p != NULL)
     return MATCH_NO;

gcc/testsuite/ChangeLog

+2009-07-10  Paul Thomas  <pault@gcc.gnu.org>
+
+	PR fortran/39334
+	* gfortran.dg/recursive_parameter_1.f90: New test.
+
 2009-07-09  Steven G. Kargl  <kargl@gcc.gnu.org>
 
 	* gfortran.dg/c_kind_tests_2.f03: clean-up leftover module(s).

gcc/testsuite/gfortran.dg/recursive_parameter_1.f90

+! { dg-do compile }
+! Tests the fix for PR39334 in which the recursive parameter declaration
+! caused a sgfault.
+!
+! Reported by James van Buskirk on comp.lang.fortran
+!
+program recursive_parameter
+   implicit none
+   integer, parameter :: dp = kind(1.0_dp) ! { dg-error "Missing kind-parameter" }
+   write(*,*) dp ! { dg-error "has no IMPLICIT type" }
+end program recursive_parameter