Make tokenizer throw error on empty char literal, along with some slight cleanups...

[ccan] / ccan / ccan_tokenizer / ccan_tokenizer.c

diff --git a/ccan/ccan_tokenizer/ccan_tokenizer.c b/ccan/ccan_tokenizer/ccan_tokenizer.c
index 7d29e025552ba93e9a6aec802db00911b49534cb..52858feaa8797a80422a032d0f7f12ead5ff09e6 100644 (file)
--- a/ccan/ccan_tokenizer/ccan_tokenizer.c
+++ b/ccan/ccan_tokenizer/ccan_tokenizer.c
@@ -473,12 +473,19 @@ struct token_list *tokenize(const char *orig, size_t orig_size,
                                
                                add(.type = type,
                                        {.include = include});
+                               
                        } else if (c=='\'' || c=='\"') { //character or string literal
                                array_char string = array_new(tl);
                                s = read_cstring(&string, s, e, c, mq);
                                if (s<e) s++; //advance past endquote (if available)
                                add(.type = c=='\'' ? TOK_CHAR : TOK_STRING,
                                    {.string = string});
+                               
+                               if (c=='\'' && string.size==0) {
+                                       tok_msg_error(empty_char_constant, orig,
+                                               "Empty character constant");
+                               }
+                               
                        } else if (c=='/' && s<e && (*s=='*' || *s=='/')) { //comment
                                if (*s++ == '*') { /* C-style comment */
                                        const char *comment_start = s-2;