MDEV-35598 foreign key error is unnecessary truncated

truncate it at 512 bytes (max allowed by the protocol), not 192

mysql-test/suite/innodb/r/foreign-keys.result

@@ -243,3 +243,25 @@ Level	Code	Message
 Warning	140	InnoDB: PAGE_COMPRESSED table can't have ROW_TYPE=COMPRESSED
 Error	1005	Can't create table `test`.`t1` (errno: 140 "Wrong create options")
 Warning	1030	Got error 140 "Wrong create options" from storage engine InnoDB
+# End of 10.5 tests
+#
+# MDEV-35598 foreign key error is unnecessary truncated
+#
+set names utf8;
+create table t1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш
+(f1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш int not null primary key,
+f2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш int not null
+) engine=innodb;
+create table t2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш
+(f1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш varchar(100),
+f2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш int not null,
+index i2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш
+(f2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш)
+) engine=innodb;
+insert t1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш values(99, 2);
+alter table t2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш add foreign key(f2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш) references t1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш(f1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш);
+insert t2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш values('g', 3);
+ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш`, CONSTRAINT `t2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш_ibfk_1` FOREIGN KEY (`f2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш`) REFERENCES `t1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш` (`f1яяяяяяяяяяььььььььььззззз
+drop table t2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш,
+t1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш;
+# End of 10.6 tests

mysql-test/suite/innodb/t/foreign-keys.test

@@ -272,3 +272,30 @@ SET FOREIGN_KEY_CHECKS=DEFAULT;
 --error ER_CANT_CREATE_TABLE
 CREATE TABLE t1(a SERIAL) ENGINE=InnoDB ROW_FORMAT=COMPRESSED PAGE_COMPRESSED=1;
 SHOW WARNINGS;
+
+--echo # End of 10.5 tests
+
+--echo #
+--echo # MDEV-35598 foreign key error is unnecessary truncated
+--echo #
+set names utf8;
+create table t1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш
+(f1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш int not null primary key,
+ f2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш int not null
+) engine=innodb;
+create table t2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш
+(f1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш varchar(100),
+ f2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш int not null,
+ index i2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш
+      (f2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш)
+) engine=innodb;
+
+insert t1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш values(99, 2);
+alter table t2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш add foreign key(f2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш) references t1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш(f1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш);
+
+--error ER_NO_REFERENCED_ROW_2
+insert t2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш values('g', 3);
+drop table t2яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш,
+           t1яяяяяяяяяяььььььььььззззззззззшшшшшшшшшш;
+
+--echo # End of 10.6 tests

sql/share/errmsg-utf8.txt

@@ -6318,15 +6318,15 @@ ER_FORBID_SCHEMA_CHANGE
         ger "Wechsel des Schemas von '%-.192s' auf '%-.192s' ist nicht erlaubt"
         spa "Vd no está autorizado a cambiar el esquema de '%-.192s' a '%-.192s'"
 ER_ROW_IS_REFERENCED_2 23000
-        chi "无法删除或更新父行：外键约束失败（%.192s）"
+        chi "无法删除或更新父行：外键约束失败（%s）"
-        eng "Cannot delete or update a parent row: a foreign key constraint fails (%.192s)"
+        eng "Cannot delete or update a parent row: a foreign key constraint fails (%s)"
-        ger "Kann Eltern-Zeile nicht löschen oder aktualisieren: eine Fremdschlüsselbedingung schlägt fehl (%.192s)"
+        ger "Kann Eltern-Zeile nicht löschen oder aktualisieren: eine Fremdschlüsselbedingung schlägt fehl (%s)"
-        spa "No puedo borrar o actualizar una fila padre: falla una restricción de clave foránea (%.192s)"
+        spa "No puedo borrar o actualizar una fila padre: falla una restricción de clave foránea (%s)"
 ER_NO_REFERENCED_ROW_2 23000
-        chi "无法添加或更新子行：外键约束失败（%.192s）"
+        chi "无法添加或更新子行：外键约束失败（%s）"
-        eng "Cannot add or update a child row: a foreign key constraint fails (%.192s)"
+        eng "Cannot add or update a child row: a foreign key constraint fails (%s)"
-        ger "Kann Kind-Zeile nicht hinzufügen oder aktualisieren: eine Fremdschlüsselbedingung schlägt fehl (%.192s)"
+        ger "Kann Kind-Zeile nicht hinzufügen oder aktualisieren: eine Fremdschlüsselbedingung schlägt fehl (%s)"
-        spa "No puedo añadir o actualizar una fila hija: falla una restricción de clave foránea (%.192s)"
+        spa "No puedo añadir o actualizar una fila hija: falla una restricción de clave foránea (%s)"
 ER_SP_BAD_VAR_SHADOW 42000
         chi "变量'%-.64s'必须用`...`，或重命名"
         eng "Variable '%-.64s' must be quoted with `...`, or renamed"

storage/innobase/trx/trx0trx.cc

@@ -63,7 +63,7 @@ const byte timestamp_max_bytes[7] = {
 };
 
 
-static const ulint MAX_DETAILED_ERROR_LEN = 256;
+static const ulint MAX_DETAILED_ERROR_LEN = 512;
 
 /*************************************************************//**
 Set detailed error message for the transaction. */