diff --git a/mysql-test/r/ctype_latin1.result b/mysql-test/r/ctype_latin1.result index 763acd0fea0..66b2cbd8fc4 100644 --- a/mysql-test/r/ctype_latin1.result +++ b/mysql-test/r/ctype_latin1.result @@ -409,3 +409,11 @@ select hex(cast(_ascii 0x7f as char(1) character set latin1)); hex(cast(_ascii 0x7f as char(1) character set latin1)) 7F End of 5.0 tests +# +# Bug#58022 ... like ... escape export_set ( ... ) crashes when export_set returns warnings +# +SELECT '' LIKE '' ESCAPE EXPORT_SET(1, 1, 1, 1, ''); +'' LIKE '' ESCAPE EXPORT_SET(1, 1, 1, 1, '') +1 +Warnings: +Warning 1292 Truncated incorrect INTEGER value: '' diff --git a/mysql-test/t/ctype_latin1.test b/mysql-test/t/ctype_latin1.test index b12436f77ba..a7e6351161b 100644 --- a/mysql-test/t/ctype_latin1.test +++ b/mysql-test/t/ctype_latin1.test @@ -127,3 +127,8 @@ DROP TABLE `abc select hex(cast(_ascii 0x7f as char(1) character set latin1)); --echo End of 5.0 tests + +--echo # +--echo # Bug#58022 ... like ... escape export_set ( ... ) crashes when export_set returns warnings +--echo # +SELECT '' LIKE '' ESCAPE EXPORT_SET(1, 1, 1, 1, ''); diff --git a/sql/item_cmpfunc.cc b/sql/item_cmpfunc.cc index 6987dd9e053..5302406e270 100644 --- a/sql/item_cmpfunc.cc +++ b/sql/item_cmpfunc.cc @@ -4692,6 +4692,7 @@ bool Item_func_like::fix_fields(THD *thd, Item **ref) String *escape_str= escape_item->val_str(&cmp.value1); if (escape_str) { + const char *escape_str_ptr= escape_str->ptr(); if (escape_used_in_parsing && ( (((thd->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES) && escape_str->numchars() != 1) || @@ -4706,9 +4707,9 @@ bool Item_func_like::fix_fields(THD *thd, Item **ref) CHARSET_INFO *cs= escape_str->charset(); my_wc_t wc; int rc= cs->cset->mb_wc(cs, &wc, - (const uchar*) escape_str->ptr(), - (const uchar*) escape_str->ptr() + - escape_str->length()); + (const uchar*) escape_str_ptr, + (const uchar*) escape_str_ptr + + escape_str->length()); escape= (int) (rc > 0 ? wc : '\\'); } else @@ -4725,13 +4726,13 @@ bool Item_func_like::fix_fields(THD *thd, Item **ref) { char ch; uint errors; - uint32 cnvlen= copy_and_convert(&ch, 1, cs, escape_str->ptr(), + uint32 cnvlen= copy_and_convert(&ch, 1, cs, escape_str_ptr, escape_str->length(), escape_str->charset(), &errors); escape= cnvlen ? ch : '\\'; } else - escape= *(escape_str->ptr()); + escape= escape_str_ptr ? *escape_str_ptr : '\\'; } } else