From: Jerry DeLisle <jvdelisle@gcc.gnu.org>
Date: Fri, 28 Mar 2008 04:44:40 +0000 (+0000)
Subject: re PR fortran/35724 (Compile time segmentation fault for CSHIFT with negative third... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=97d650ccf79a0bbf45387ae0cc77f98d345dca6a;p=gcc.git

re PR fortran/35724 (Compile time segmentation fault for CSHIFT with negative third arg)

2008-03-27  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/35724
	* iresolve.c (gfc_resolve_cshift): Check for NULL symtree in test for
	optional argument attribute.

From-SVN: r133668
---

diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 67dc49b7da8..670c5b8a340 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,9 @@
+2008-03-27  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
+
+	PR fortran/35724
+	* iresolve.c (gfc_resolve_cshift): Check for NULL symtree in test for
+	optional argument attribute.
+
 2008-03-27  Tom Tromey  <tromey@redhat.com>
 
 	* Make-lang.in: Revert automatic dependency patch.
diff --git a/gcc/fortran/iresolve.c b/gcc/fortran/iresolve.c
index bdb6928c4a5..c166d8f2d60 100644
--- a/gcc/fortran/iresolve.c
+++ b/gcc/fortran/iresolve.c
@@ -597,7 +597,8 @@ gfc_resolve_cshift (gfc_expr *f, gfc_expr *array, gfc_expr *shift,
  
   if (dim != NULL)
     {
-      if (dim->expr_type != EXPR_CONSTANT && dim->symtree->n.sym->attr.optional)
+      if (dim->expr_type != EXPR_CONSTANT && dim->symtree != NULL
+	  && dim->symtree->n.sym->attr.optional)
 	{
 	  /* Mark this for later setting the type in gfc_conv_missing_dummy.  */
 	  dim->representation.length = shift->ts.kind;