crepl

commit 20059b1233d0b4be1f9d45f6800e0a51f9af1fd0
parent f5082c2fc369c8f78d11ddbe25829866b21855ed
Author: Demonstrandum <moi@knutsen.co>
Date:   Sat, 27 Jun 2020 09:51:40 +0100

Catch error on no right side of prefix operators

Diffstat:
M
src/parse.c
 | 
6
++++++

1 file changed, 6 insertions(+), 0 deletions(-)
diff --git a/src/parse.c b/src/parse.c
@@ -308,6 +308,12 @@ ParseNode *parse_prefix(const Token *token, char **rest)
 
 		unary->callee = callee;
 		unary->operand = parse_expr(rest, precedence);
+		if (unary->operand == NULL) {
+			ERROR_TYPE = PARSE_ERROR;
+			sprintf(ERROR_MSG, "Missing right-hand-side of prefix"
+				" operator `%s'.", token->value);
+			return NULL;
+		}
 		unary->is_postfix = false;
 
 		node->type = UNARY_NODE;