Reject invalid MAX_WBITS values at compile time.

3 months ago · ef24c4c750
parent 6d3a66a11a
commit ef24c4c750
1 changed files with 3 additions and 1 deletions
--- a/zutil.h
+++ b/zutil.h
@ -65,7 +65,9 @@ extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
 /* To be used only when the state is known to be valid */

        /* common constants */
-
+#if MAX_WBITS < 9 || MAX_WBITS > 15
+#  error MAX_WBITS must be in 9..15
+#endif
 #ifndef DEF_WBITS
 #  define DEF_WBITS MAX_WBITS
 #endif