Fix -Wchar-subscripts warnings with Newlib

ccawley2011 · ccawley2011 · commit 67dc96e2516c · 2025-01-01T16:03:04.000Z
diff --git a/hostfs.c b/hostfs.c
@@ -698,7 +698,9 @@ hostfs_read_object_info(const char *host_pathname,
         }
       }
     } else if (strlen(comma + 1) == 3) {
-      if (isxdigit(comma[1]) && isxdigit(comma[2]) && isxdigit(comma[3])) {
+      if (isxdigit((unsigned char)comma[1]) &&
+          isxdigit((unsigned char)comma[2]) &&
+          isxdigit((unsigned char)comma[3])) {
         file_type = (ARMword) strtoul(comma + 1, NULL, 16);
         truncate_name = true;
       }

Original file line number	Diff line number	Diff line change
`@@ -698,7 +698,9 @@ hostfs_read_object_info(const char *host_pathname,`
`698`	`698`	`}`
`699`	`699`	`}`
`700`	`700`	`} else if (strlen(comma + 1) == 3) {`
`701`		`- if (isxdigit(comma[1]) && isxdigit(comma[2]) && isxdigit(comma[3])) {`
	`701`	`+ if (isxdigit((unsigned char)comma[1]) &&`
	`702`	`+ isxdigit((unsigned char)comma[2]) &&`
	`703`	`+ isxdigit((unsigned char)comma[3])) {`
`702`	`704`	`file_type = (ARMword) strtoul(comma + 1, NULL, 16);`
`703`	`705`	`truncate_name = true;`
`704`	`706`	`}`