scc

commit eb8960812d92714eb568df36e09d8c76af5cd46c
parent 9057ad5dbe07ea11e717cc08f69a26bd7e6abc60
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Mon,  7 Oct 2024 17:12:58 +0200

cc1: Fix lexer for strings

There were some leftovers from older versions of the code and
the logic was inverted, making that escape sequences were wrongly
processed.

Diffstat:
M
src/cmd/cc/cc1/lex.c
 | 
12
+++---------

1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/src/cmd/cc/cc1/lex.c b/src/cmd/cc/cc1/lex.c
@@ -649,14 +649,13 @@ static int
 string(void)
 {
 	char *bp = yytext;
-	int c, esc;
+	int c;
 
 	*bp++ = '"';
-	esc = 0;
 	for (++input->p; ; ++input->p) {
 		c = *input->p;
 
-		if (c == '"' && !esc)
+		if (c == '"')
 			break;
 
 		if (c == '\0') {
@@ -664,12 +663,7 @@ string(void)
 			break;
 		}
 
-		if (c == '\\' && !esc && disescape)
-			esc = 1;
-		else
-			esc = 0;
-
-		if (c == '\\' && !esc)
+		if (c == '\\' && !disescape)
 			c = escape();
 
 		if (bp == &yytext[STRINGSIZ+1]) {