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Fixed BUG#18949: Test case sp-goto is disabled 

  Removed sp-goto.test, sp-goto.result and all (disabled) GOTO code.
  Also removed some related code that's not needed any more (no possible
  unresolved label references any more, so no need to check for them).
  NB: Keeping the ER_SP_GOTO_IN_HNDLR in errmsg.txt; it might become useful
      in the future, and removing it (and thus re-enumerating error codes)
      might upset things. (Anything referring to explicit error codes.)


BitKeeper/deleted/.del-sp-goto.result~f343103c63f64b7a:
  Delete: mysql-test/r/sp-goto.result
BitKeeper/deleted/.del-sp-goto.test~5054d3f729692d3d:
  Delete: mysql-test/t/sp-goto.test
mysql-test/t/disabled.def:
  sp-goto.test no longer exists.
sql/lex.h:
  Removed (disabled) GOTO definitions.
sql/sp_head.cc:
  Removed sp_head::check_backpatch() and simplified sp_head::backpatch().
  Without GOTO, unresolved label references are not possible, so no need
  to check for them.
sql/sp_head.h:
  Removed sp_head::check_backpatch(). (Not needed with no GOTO)
sql/sp_pcontext.cc:
  SP_LAB_GOTO was renamed to SP_LAB_IMPL
sql/sp_pcontext.h:
  Removed SP_LAB_REF (no longer needed) and renamed SP_LAB_GOTO
  to SP_LAB_IMPL, since it's only used for implicit labels now.
sql/sql_yacc.yy:
  Removed GOTO symbols and (disabled) code, and the no longer needed
  sp_head::check_backpatch() calls.
parent beb20469
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Showing with 6 additions and 588 deletions
mysql-test/r/sp-goto.result deleted 100644 → 0
View file @ beb20469
drop table if exists t1;
create table t1 (
id char(16) not null default '',
data int not null
);
drop procedure if exists goto1//
create procedure goto1()
begin
declare y int;
label a;
select * from t1;
select count(*) into y from t1;
if y > 2 then
goto b;
end if;
insert into t1 values ("j", y);
goto a;
label b;
end//
call goto1()//
id data
id data
j 0
id data
j 0
j 1
id data
j 0
j 1
j 2
drop procedure goto1//
drop procedure if exists goto2//
create procedure goto2(a int)
begin
declare x int default 0;
declare continue handler for sqlstate '42S98' set x = 1;
label a;
select * from t1;
b:
while x < 2 do
begin
declare continue handler for sqlstate '42S99' set x = 2;
if a = 0 then
set x = x + 1;
iterate b;
elseif a = 1 then
leave b;
elseif a = 2 then
set a = 1;
goto a;
end if;
end;
end while b;
select * from t1;
end//
call goto2(0)//
id data
j 0
j 1
j 2
id data
j 0
j 1
j 2
call goto2(1)//
id data
j 0
j 1
j 2
id data
j 0
j 1
j 2
call goto2(2)//
id data
j 0
j 1
j 2
id data
j 0
j 1
j 2
id data
j 0
j 1
j 2
drop procedure goto2//
delete from t1//
drop procedure if exists goto3//
create procedure goto3()
begin
label L1;
begin
end;
goto L1;
end//
drop procedure goto3//
drop procedure if exists goto4//
create procedure goto4()
begin
begin
label lab1;
begin
goto lab1;
end;
end;
end//
drop procedure goto4//
drop procedure if exists goto5//
create procedure goto5()
begin
begin
begin
goto lab1;
end;
label lab1;
end;
end//
drop procedure goto5//
drop procedure if exists goto6//
create procedure goto6()
begin
label L1;
goto L5;
begin
label L2;
goto L1;
goto L5;
begin
label L3;
goto L1;
goto L2;
goto L3;
goto L4;
goto L5;
end;
goto L2;
goto L4;
label L4;
end;
label L5;
goto L1;
end//
drop procedure goto6//
create procedure foo()
begin
goto foo;
end//
ERROR 42000: GOTO with no matching label: foo
create procedure foo()
begin
begin
label foo;
end;
goto foo;
end//
ERROR 42000: GOTO with no matching label: foo
create procedure foo()
begin
goto foo;
begin
label foo;
end;
end//
ERROR 42000: GOTO with no matching label: foo
create procedure foo()
begin
begin
goto foo;
end;
begin
label foo;
end;
end//
ERROR 42000: GOTO with no matching label: foo
create procedure foo()
begin
begin
label foo;
end;
begin
goto foo;
end;
end//
ERROR 42000: GOTO with no matching label: foo
create procedure p()
begin
declare continue handler for sqlexception
begin
goto L1;
end;
select field from t1;
label L1;
end//
ERROR HY000: GOTO is not allowed in a stored procedure handler
drop procedure if exists bug6898//
create procedure bug6898()
begin
goto label1;
label label1;
begin end;
goto label1;
end//
drop procedure bug6898//
drop table t1;
mysql-test/t/disabled.def
View file @ a6ae67c4
......@@ -10,6 +10,5 @@
#
##############################################################################
sp-goto : GOTO is currently is disabled - will be fixed in the future
ndb_load : Bug#17233
udf : Bug#18564 (Permission by Brian)
mysql-test/t/sp-goto.test deleted 100644 → 0
View file @ beb20469
#
# The non-standard GOTO, for compatibility
#
# QQQ The "label" syntax is temporary, it will (hopefully)
# change to the more common "L:" syntax soon.
# For the time being, this feature is disabled, until
# the syntax (and some other known bugs) can be fixed.
#
# Test cases for bugs are added at the end. See template there.
#
--disable_warnings
drop table if exists t1;
--enable_warnings
create table t1 (
id char(16) not null default '',
data int not null
);
delimiter //;
--disable_warnings
drop procedure if exists goto1//
--enable_warnings
create procedure goto1()
begin
declare y int;
label a;
select * from t1;
select count(*) into y from t1;
if y > 2 then
goto b;
end if;
insert into t1 values ("j", y);
goto a;
label b;
end//
call goto1()//
drop procedure goto1//
# With dummy handlers, just to test restore of contexts with jumps
--disable_warnings
drop procedure if exists goto2//
--enable_warnings
create procedure goto2(a int)
begin
declare x int default 0;
declare continue handler for sqlstate '42S98' set x = 1;
label a;
select * from t1;
b:
while x < 2 do
begin
declare continue handler for sqlstate '42S99' set x = 2;
if a = 0 then
set x = x + 1;
iterate b;
elseif a = 1 then
leave b;
elseif a = 2 then
set a = 1;
goto a;
end if;
end;
end while b;
select * from t1;
end//
call goto2(0)//
call goto2(1)//
call goto2(2)//
drop procedure goto2//
delete from t1//
# Check label visibility for some more cases. We don't call these.
--disable_warnings
drop procedure if exists goto3//
--enable_warnings
create procedure goto3()
begin
label L1;
begin
end;
goto L1;
end//
drop procedure goto3//
--disable_warnings
drop procedure if exists goto4//
--enable_warnings
create procedure goto4()
begin
begin
label lab1;
begin
goto lab1;
end;
end;
end//
drop procedure goto4//
--disable_warnings
drop procedure if exists goto5//
--enable_warnings
create procedure goto5()
begin
begin
begin
goto lab1;
end;
label lab1;
end;
end//
drop procedure goto5//
--disable_warnings
drop procedure if exists goto6//
--enable_warnings
create procedure goto6()
begin
label L1;
goto L5;
begin
label L2;
goto L1;
goto L5;
begin
label L3;
goto L1;
goto L2;
goto L3;
goto L4;
goto L5;
end;
goto L2;
goto L4;
label L4;
end;
label L5;
goto L1;
end//
drop procedure goto6//
# Mismatching labels
--error 1308
create procedure foo()
begin
goto foo;
end//
--error 1308
create procedure foo()
begin
begin
label foo;
end;
goto foo;
end//
--error 1308
create procedure foo()
begin
goto foo;
begin
label foo;
end;
end//
--error 1308
create procedure foo()
begin
begin
goto foo;
end;
begin
label foo;
end;
end//
--error 1308
create procedure foo()
begin
begin
label foo;
end;
begin
goto foo;
end;
end//
# No goto in a handler
--error 1358
create procedure p()
begin
declare continue handler for sqlexception
begin
goto L1;
end;
select field from t1;
label L1;
end//
#
# Test cases for old bugs
#
#
# BUG#6898: Stored procedure crash if GOTO statements exist
#
--disable_warnings
drop procedure if exists bug6898//
--enable_warnings
create procedure bug6898()
begin
goto label1;
label label1;
begin end;
goto label1;
end//
drop procedure bug6898//
#
# BUG#NNNN: New bug synopsis
#
#--disable_warnings
#drop procedure if exists bugNNNN//
#--enable_warnings
#create procedure bugNNNN...
# Add bugs above this line. Use existing tables t1 and t2 when
# practical, or create table t3, t4 etc temporarily (and drop them).
delimiter ;//
drop table t1;
sql/lex.h
View file @ a6ae67c4
......@@ -215,9 +215,6 @@ static SYMBOL symbols[] = {
{ "GEOMETRYCOLLECTION",SYM(GEOMETRYCOLLECTION)},
{ "GET_FORMAT", SYM(GET_FORMAT)},
{ "GLOBAL", SYM(GLOBAL_SYM)},
#ifdef SP_GOTO
{ "GOTO", SYM(GOTO_SYM)},
#endif
{ "GRANT", SYM(GRANT)},
{ "GRANTS", SYM(GRANTS)},
{ "GROUP", SYM(GROUP)},
......@@ -265,10 +262,6 @@ static SYMBOL symbols[] = {
{ "KEY", SYM(KEY_SYM)},
{ "KEYS", SYM(KEYS)},
{ "KILL", SYM(KILL_SYM)},
#ifdef SP_GOTO
/* QQ This will go away when the GOTO label syntax is fixed */
{ "LABEL", SYM(LABEL_SYM)},
#endif
{ "LANGUAGE", SYM(LANGUAGE_SYM)},
{ "LAST", SYM(LAST_SYM)},
{ "LEADING", SYM(LEADING)},
......
sql/sp_head.cc
View file @ a6ae67c4
......@@ -1670,44 +1670,11 @@ sp_head::backpatch(sp_label_t *lab)
while ((bp= li++))
{
if (bp->lab == lab ||
(bp->lab->type == SP_LAB_REF &&
my_strcasecmp(system_charset_info, bp->lab->name, lab->name) == 0))
{
if (bp->lab->type != SP_LAB_REF)
bp->instr->backpatch(dest, lab->ctx);
else
{
sp_label_t *dstlab= bp->lab->ctx->find_label(lab->name);
if (dstlab)
{
bp->lab= lab;
bp->instr->backpatch(dest, dstlab->ctx);
}
}
}
}
}
int
sp_head::check_backpatch(THD *thd)
{
bp_t *bp;
List_iterator_fast<bp_t> li(m_backpatch);
while ((bp= li++))
{
if (bp->lab->type == SP_LAB_REF)
{
my_error(ER_SP_LILABEL_MISMATCH, MYF(0), "GOTO", bp->lab->name);
return -1;
}
if (bp->lab == lab)
bp->instr->backpatch(dest, lab->ctx);
}
return 0;
}
/*
Prepare an instance of create_field for field creation (fill all necessary
attributes).
......
sql/sp_head.h
View file @ a6ae67c4
......@@ -263,13 +263,6 @@ class sp_head :private Query_arena
void
backpatch(struct sp_label *);
// Check that no unresolved references exist.
// If none found, 0 is returned, otherwise errors have been issued
// and -1 is returned.
// This is called by the parser at the end of a create procedure/function.
int
check_backpatch(THD *thd);
// Start a new cont. backpatch level. If 'i' is NULL, the level is just incr.
void
new_cont_backpatch(sp_instr_opt_meta *i);
......
sql/sp_pcontext.cc
View file @ a6ae67c4
......@@ -241,7 +241,7 @@ sp_pcontext::push_label(char *name, uint ip)
{
lab->name= name;
lab->ip= ip;
lab->type= SP_LAB_GOTO;
lab->type= SP_LAB_IMPL;
lab->ctx= this;
m_label.push_front(lab);
}
......
sql/sp_pcontext.h
View file @ a6ae67c4
......@@ -48,10 +48,9 @@ typedef struct sp_variable
} sp_variable_t;
#define SP_LAB_REF 0 // Unresolved reference (for goto)
#define SP_LAB_GOTO 1 // Free goto label
#define SP_LAB_BEGIN 2 // Label at BEGIN
#define SP_LAB_ITER 3 // Label at iteration control
#define SP_LAB_IMPL 0 // Implicit label generated by parser
#define SP_LAB_BEGIN 1 // Label at BEGIN
#define SP_LAB_ITER 2 // Label at iteration control
/*
An SQL/PSM label. Can refer to the identifier used with the
......
sql/sql_yacc.yy
View file @ a6ae67c4
......@@ -301,7 +301,6 @@ bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
%token GEOMFROMWKB
%token GET_FORMAT
%token GLOBAL_SYM
%token GOTO_SYM
%token GRANT
%token GRANTS
%token GREATEST_SYM
......@@ -1332,8 +1331,6 @@ create_function_tail:
if (sp->is_not_allowed_in_function("function"))
YYABORT;
if (sp->check_backpatch(YYTHD))
YYABORT;
lex->sql_command= SQLCOM_CREATE_SPFUNCTION;
sp->init_strings(YYTHD, lex, lex->spname);
if (!(sp->m_flags & sp_head::HAS_RETURN))
......@@ -2054,91 +2051,6 @@ sp_proc_stmt:
sp->add_instr(i);
}
}
| LABEL_SYM IDENT
{
#ifdef SP_GOTO
LEX *lex= Lex;
sp_head *sp= lex->sphead;
sp_pcontext *ctx= lex->spcont;
sp_label_t *lab= ctx->find_label($2.str);
if (lab)
{
my_error(ER_SP_LABEL_REDEFINE, MYF(0), $2.str);
YYABORT;
}
else
{
lab= ctx->push_label($2.str, sp->instructions());
lab->type= SP_LAB_GOTO;
lab->ctx= ctx;
sp->backpatch(lab);
}
#else
yyerror(ER(ER_SYNTAX_ERROR));
YYABORT;
#endif
}
| GOTO_SYM IDENT
{
#ifdef SP_GOTO
LEX *lex= Lex;
sp_head *sp= lex->sphead;
sp_pcontext *ctx= lex->spcont;
uint ip= lex->sphead->instructions();
sp_label_t *lab;
sp_instr_jump *i;
sp_instr_hpop *ih;
sp_instr_cpop *ic;
if (sp->m_in_handler)
{
my_message(ER_SP_GOTO_IN_HNDLR, ER(ER_SP_GOTO_IN_HNDLR), MYF(0));
YYABORT;
}
lab= ctx->find_label($2.str);
if (! lab)
{
lab= (sp_label_t *)YYTHD->alloc(sizeof(sp_label_t));
lab->name= $2.str;
lab->ip= 0;
lab->type= SP_LAB_REF;
lab->ctx= ctx;
ih= new sp_instr_hpop(ip++, ctx, 0);
sp->push_backpatch(ih, lab);
sp->add_instr(ih);
ic= new sp_instr_cpop(ip++, ctx, 0);
sp->add_instr(ic);
sp->push_backpatch(ic, lab);
i= new sp_instr_jump(ip, ctx);
sp->push_backpatch(i, lab); /* Jumping forward */
sp->add_instr(i);
}
else
{
uint n;
n= ctx->diff_handlers(lab->ctx);
if (n)
{
ih= new sp_instr_hpop(ip++, ctx, n);
sp->add_instr(ih);
}
n= ctx->diff_cursors(lab->ctx);
if (n)
{
ic= new sp_instr_cpop(ip++, ctx, n);
sp->add_instr(ic);
}
i= new sp_instr_jump(ip, ctx, lab->ip); /* Jump back */
sp->add_instr(i);
}
#else
yyerror(ER(ER_SYNTAX_ERROR));
YYABORT;
#endif
}
| OPEN_SYM ident
{
LEX *lex= Lex;
......@@ -9228,8 +9140,6 @@ sp_tail:
LEX *lex= Lex;
sp_head *sp= lex->sphead;
if (sp->check_backpatch(YYTHD))
YYABORT;
sp->init_strings(YYTHD, lex, $3);
lex->sql_command= SQLCOM_CREATE_PROCEDURE;
/* Restore flag if it was cleared above */
......
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