diff options
| -rw-r--r-- | mysql-test/r/sp-code.result | 113 | ||||
| -rw-r--r-- | mysql-test/t/sp-code.test | 75 | ||||
| -rw-r--r-- | sql/sp_head.cc | 16 | ||||
| -rw-r--r-- | sql/sp_head.h | 6 |
4 files changed, 207 insertions, 3 deletions
diff --git a/mysql-test/r/sp-code.result b/mysql-test/r/sp-code.result index 9d86a6bc08d..219f3c9b37a 100644 --- a/mysql-test/r/sp-code.result +++ b/mysql-test/r/sp-code.result @@ -620,4 +620,117 @@ SHOW PROCEDURE CODE p1; Pos Instruction 0 stmt 2 "CREATE INDEX idx ON t1 (c1)" DROP PROCEDURE p1; +drop table if exists t1; +drop procedure if exists proc_26977_broken; +drop procedure if exists proc_26977_works; +create table t1(a int unique); +create procedure proc_26977_broken(v int) +begin +declare i int default 5; +declare continue handler for sqlexception +begin +select 'caught something'; +retry: +while i > 0 do +begin +set i = i - 1; +select 'looping', i; +end; +end while retry; +end; +select 'do something'; +insert into t1 values (v); +select 'do something again'; +insert into t1 values (v); +end// +create procedure proc_26977_works(v int) +begin +declare i int default 5; +declare continue handler for sqlexception +begin +select 'caught something'; +retry: +while i > 0 do +begin +set i = i - 1; +select 'looping', i; +end; +end while retry; +select 'optimizer: keep hreturn'; +end; +select 'do something'; +insert into t1 values (v); +select 'do something again'; +insert into t1 values (v); +end// +show procedure code proc_26977_broken; +Pos Instruction +0 set i@1 5 +1 hpush_jump 8 2 CONTINUE +2 stmt 0 "select 'caught something'" +3 jump_if_not 7(7) (i@1 > 0) +4 set i@1 (i@1 - 1) +5 stmt 0 "select 'looping', i" +6 jump 3 +7 hreturn 2 +8 stmt 0 "select 'do something'" +9 stmt 5 "insert into t1 values (v)" +10 stmt 0 "select 'do something again'" +11 stmt 5 "insert into t1 values (v)" +12 hpop 1 +show procedure code proc_26977_works; +Pos Instruction +0 set i@1 5 +1 hpush_jump 9 2 CONTINUE +2 stmt 0 "select 'caught something'" +3 jump_if_not 7(7) (i@1 > 0) +4 set i@1 (i@1 - 1) +5 stmt 0 "select 'looping', i" +6 jump 3 +7 stmt 0 "select 'optimizer: keep hreturn'" +8 hreturn 2 +9 stmt 0 "select 'do something'" +10 stmt 5 "insert into t1 values (v)" +11 stmt 0 "select 'do something again'" +12 stmt 5 "insert into t1 values (v)" +13 hpop 1 +call proc_26977_broken(1); +do something +do something +do something again +do something again +caught something +caught something +looping i +looping 4 +looping i +looping 3 +looping i +looping 2 +looping i +looping 1 +looping i +looping 0 +call proc_26977_works(2); +do something +do something +do something again +do something again +caught something +caught something +looping i +looping 4 +looping i +looping 3 +looping i +looping 2 +looping i +looping 1 +looping i +looping 0 +optimizer: keep hreturn +optimizer: keep hreturn +drop table t1; +drop procedure proc_26977_broken; +drop procedure proc_26977_works; End of 5.0 tests. diff --git a/mysql-test/t/sp-code.test b/mysql-test/t/sp-code.test index 97bc29fcad2..0f249c95172 100644 --- a/mysql-test/t/sp-code.test +++ b/mysql-test/t/sp-code.test @@ -446,4 +446,79 @@ SHOW PROCEDURE CODE p1; DROP PROCEDURE p1; +# +# Bug#26977 exception handlers never hreturn +# +--disable_warnings +drop table if exists t1; +drop procedure if exists proc_26977_broken; +drop procedure if exists proc_26977_works; +--enable_warnings + +create table t1(a int unique); + +delimiter //; + +create procedure proc_26977_broken(v int) +begin + declare i int default 5; + + declare continue handler for sqlexception + begin + select 'caught something'; + retry: + while i > 0 do + begin + set i = i - 1; + select 'looping', i; + end; + end while retry; + end; + + select 'do something'; + insert into t1 values (v); + select 'do something again'; + insert into t1 values (v); +end// + +create procedure proc_26977_works(v int) +begin + declare i int default 5; + + declare continue handler for sqlexception + begin + select 'caught something'; + retry: + while i > 0 do + begin + set i = i - 1; + select 'looping', i; + end; + end while retry; + select 'optimizer: keep hreturn'; + end; + + select 'do something'; + insert into t1 values (v); + select 'do something again'; + insert into t1 values (v); +end// +delimiter ;// + +show procedure code proc_26977_broken; + +show procedure code proc_26977_works; + +## This caust an error because of jump short cut +## optimization. +call proc_26977_broken(1); + +## This works +call proc_26977_works(2); + +drop table t1; +drop procedure proc_26977_broken; +drop procedure proc_26977_works; + + --echo End of 5.0 tests. diff --git a/sql/sp_head.cc b/sql/sp_head.cc index 1ebef4f8bee..5a1faf50296 100644 --- a/sql/sp_head.cc +++ b/sql/sp_head.cc @@ -2982,10 +2982,20 @@ sp_instr_hreturn::print(String *str) uint sp_instr_hreturn::opt_mark(sp_head *sp, List<sp_instr> *leads) { - if (m_dest) - return sp_instr_jump::opt_mark(sp, leads); - marked= 1; + + if (m_dest) + { + /* + This is an EXIT handler; next instruction step is in m_dest. + */ + return m_dest; + } + + /* + This is a CONTINUE handler; next instruction step will come from + the handler stack and not from opt_mark. + */ return UINT_MAX; } diff --git a/sql/sp_head.h b/sql/sp_head.h index 4632f6808fd..ed99885ae9a 100644 --- a/sql/sp_head.h +++ b/sql/sp_head.h @@ -973,6 +973,12 @@ public: virtual void print(String *str); + /* This instruction will not be short cut optimized. */ + virtual uint opt_shortcut_jump(sp_head *sp, sp_instr *start) + { + return m_ip; + } + virtual uint opt_mark(sp_head *sp, List<sp_instr> *leads); private: |