Issue #26765: Ensure that bytes- and unicode-specific stringlib files are used
with correct type.
diff --git a/Objects/stringlib/find_max_char.h b/Objects/stringlib/find_max_char.h
index eb3fe88..8ccbc30 100644
--- a/Objects/stringlib/find_max_char.h
+++ b/Objects/stringlib/find_max_char.h
@@ -1,6 +1,8 @@
/* Finding the optimal width of unicode characters in a buffer */
-#if STRINGLIB_IS_UNICODE
+#if !STRINGLIB_IS_UNICODE
+# error "find_max_char.h is specific to Unicode"
+#endif
/* Mask to quickly check whether a C 'long' contains a
non-ASCII, UTF8-encoded char. */
@@ -129,5 +131,4 @@
#undef MAX_CHAR_UCS4
#endif /* STRINGLIB_SIZEOF_CHAR == 1 */
-#endif /* STRINGLIB_IS_UNICODE */