[CRT] Fix Visual C++ MSDEV hang by fixing _ismbcspace

Doug-Lyons · Doug-Lyons · commit 1372fe3b721c · 2025-11-16T17:04:15.000-06:00
diff --git a/sdk/lib/crt/mbstring/ismbc.c b/sdk/lib/crt/mbstring/ismbc.c
@@ -66,7 +66,7 @@ int _ismbcsymbol( unsigned int c )
  */
 int _ismbcspace( unsigned int c )
 {
-	return ((c) == 0x8140);
+    return (c == 0x20 || (c >= 0x09 && c <= 0x0D ));
 }
 /*
  * @implemented

Original file line number	Diff line number	Diff line change
`@@ -66,7 +66,7 @@ int _ismbcsymbol( unsigned int c )`
`66`	`66`	`*/`
`67`	`67`	`int _ismbcspace( unsigned int c )`
`68`	`68`	`{`
`69`		`- return ((c) == 0x8140);`
	`69`	`+ return (c == 0x20 \|\| (c >= 0x09 && c <= 0x0D ));`
`70`	`70`	`}`
`71`	`71`	`/*`
`72`	`72`	`* @implemented`