[PATCH] #if expression handling cleanups

 - handling of "unexpanded identifiers should be replaced with 0" is
   moved to pre-process.c and done on token replacement level
 - warning about such replacement made conditional
 - expand() and expand_one_symbol() return int now - it's "is the first
   token completely expanded now" (simplifies the life in #if handling,
   etc.)
 - crud removed from evaluate.c and expand.c

1 files changed, 0 insertions, 11 deletions

diff --git a/expand.c b/expand.c
index 99efb94..c02a238 100644
--- a/expand.c
+++ b/expand.c
@@ -37,17 +37,6 @@ static int expand_statement(struct statement *);
 static int expand_symbol_expression(struct expression *expr)
 {
 	struct symbol *sym = expr->symbol;
-
-	/*
-	 * The preprocessor can cause unknown symbols to be generated
-	 */
-	if (!sym) {
-		warning(expr->pos, "undefined preprocessor identifier '%s'", show_ident(expr->symbol_name));
-		expr->type = EXPR_VALUE;
-		expr->value = 0;
-		return UNSAFE;
-	}
-
 	/* The cost of a symbol expression is lower for on-stack symbols */
 	return (sym->ctype.modifiers & (MOD_STATIC | MOD_EXTERN)) ? 2 : 1;
 }