re PR c++/45562 (ICE: SIGSEGV in cp_build_unary_op (typeck.c:5083) with…

re PR c++/45562 (ICE: SIGSEGV in cp_build_unary_op (typeck.c:5083) with -std=gnu++0x -fipa-cp-clone -fcompare-debug)

2010-10-11  Martin Jambor  <mjambor@suse.cz>

	PR c++/45562
	* cp/cp-tree.h (current_class_ref): Check that cp_function_chain is
	non-NULL.
	* cp/call.c (build_cxx_call): Likewise.

From-SVN: r165330

gcc/cp/ChangeLog

+2010-10-11  Martin Jambor  <mjambor@suse.cz>
+
+	PR c++/45562
+	* cp-tree.h (current_class_ref): Check that cp_function_chain is
+	non-NULL.
+	* call.c (build_cxx_call): Likewise.
+
 2010-10-10  Jason Merrill  <jason@redhat.com>
 
 	* pt.c (tsubst_default_argument): Handle DEFAULT_ARG.

gcc/cp/call.c

@@ -6082,7 +6082,8 @@ build_cxx_call (tree fn, int nargs, tree *argarray)
   fndecl = get_callee_fndecl (fn);
   if ((!fndecl || !TREE_NOTHROW (fndecl))
       && at_function_scope_p ()
-      && cfun)
+      && cfun
+      && cp_function_chain)
     cp_function_chain->can_throw = 1;
 
   /* Check that arguments to builtin functions match the expectations.  */

gcc/cp/cp-tree.h

@@ -1055,7 +1055,8 @@ struct GTY(()) language_function {
   (cfun && cp_function_chain					\
    ? cp_function_chain->x_current_class_ptr : NULL_TREE)
 #define current_class_ref \
-  (cfun ? cp_function_chain->x_current_class_ref : NULL_TREE)
+  ((cfun && cp_function_chain)                                  \
+   ? cp_function_chain->x_current_class_ref : NULL_TREE)
 
 /* The EH_SPEC_BLOCK for the exception-specifiers for the current
    function, if any.  */