ctype_latin1.result, ctype_latin1.test, charset.c:

  Treat unknown characters straight in a query as syntax error, rather skipping it as a space character.

mysql-test/r/ctype_latin1.result

@@ -325,3 +325,8 @@ latin1_bin	6109
 latin1_bin	61
 latin1_bin	6120
 drop table t1;
+CREATE TABLE a (a int);
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'a (a int)' at line 1
+SELECT 'a' as str;
+str
+a

mysql-test/t/ctype_latin1.test

@@ -66,3 +66,12 @@ SET collation_connection='latin1_swedish_ci';
 -- source include/ctype_filesort.inc
 SET collation_connection='latin1_bin';
 -- source include/ctype_filesort.inc
+
+#
+# Bug#8041
+# An unknown character (e.g. 0x84) should result in ERROR,
+# It was treated like a space character earlier.
+# Howerver, it should still work fine as a string part.
+--error 1064
+CREATE TABLE a (a int);
+SELECT 'a' as str;

mysys/charset.c

@@ -64,7 +64,7 @@ static my_bool init_state_maps(CHARSET_INFO *cs)
     else if (my_mbcharlen(cs, i)>1)
       state_map[i]=(uchar) MY_LEX_IDENT;
 #endif
-    else if (!my_isgraph(cs,i))
+    else if (my_isspace(cs,i))
       state_map[i]=(uchar) MY_LEX_SKIP;
     else
       state_map[i]=(uchar) MY_LEX_CHAR;