Handle bad input for ascii printable

kddnewton · kddnewton · commit 06242aa7a052 · 2023-06-28T21:07:33.000-04:00
diff --git a/src/unescape.c b/src/unescape.c
@@ -47,7 +47,8 @@ static const bool ascii_printable_chars[] = {
 
 static inline bool
 char_is_ascii_printable(const char c) {
-    return ascii_printable_chars[(unsigned char) c];
+    unsigned char v = (unsigned char) c;
+    return (v < 0x80) && ascii_printable_chars[v];
 }
 
 /******************************************************************************/

Original file line number	Diff line number	Diff line change
`@@ -47,7 +47,8 @@ static const bool ascii_printable_chars[] = {`
`47`	`47`
`48`	`48`	`static inline bool`
`49`	`49`	`char_is_ascii_printable(const char c) {`
`50`		`- return ascii_printable_chars[(unsigned char) c];`
	`50`	`+ unsigned char v = (unsigned char) c;`
	`51`	`+ return (v < 0x80) && ascii_printable_chars[v];`
`51`	`52`	`}`
`52`	`53`
`53`	`54`	`/******************************************************************************/`