re PR c/5615 (ICE in size_binop, at fold-const.c:1914)

        PR c/5615
        * expr.h (ARGS_SIZE_TREE): Convert size.var to ssizetype.

From-SVN: r49904

gcc/ChangeLog

+2002-02-20  Richard Henderson  <rth@redhat.com>
+
+	PR c/5615
+	* expr.h (ARGS_SIZE_TREE): Convert size.var to ssizetype.
+
 2002-02-20  Tom Tromey  <tromey@redhat.com>
 
 	* config/fr30/fr30.h (DWARF_LINE_MIN_INSTR_LENGTH): Removed.

gcc/expr.h

@@ -97,7 +97,8 @@ struct args_size
    of type ssizetype.  */
 #define ARGS_SIZE_TREE(SIZE)					\
 ((SIZE).var == 0 ? ssize_int ((SIZE).constant)			\
- : size_binop (PLUS_EXPR, (SIZE).var, ssize_int ((SIZE).constant)))
+ : size_binop (PLUS_EXPR, convert (ssizetype, (SIZE).var),	\
+	       ssize_int ((SIZE).constant)))
 
 /* Convert the implicit sum in a `struct args_size' into an rtx.  */
 #define ARGS_SIZE_RTX(SIZE)					\

gcc/testsuite/gcc.c-torture/compile/20020210-1.c

+/* PR c/5615 */
+void f(int a, struct {int b[a];} c) {}