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Commitb5d1608

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Fix varlena.c routines to allow 1-byte-header text values. This is now
demonstrably necessary for text_substring() since regexp_split functionsmay pass it such a value; and we might as well convert the whole fileat once. Per buildfarm results (though I wonder why most machines aren'tshowing a failure).
1 parent7583f9a commitb5d1608

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1 file changed

+33
-32
lines changed

1 file changed

+33
-32
lines changed

‎src/backend/utils/adt/varlena.c

Lines changed: 33 additions & 32 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.157 2007/07/19 20:34:20 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/utils/adt/varlena.c,v 1.158 2007/09/22 00:36:38 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -689,15 +689,16 @@ text_substring(Datum str, int32 start, int32 length, bool length_not_specified)
689689
slice= (text*)DatumGetPointer(str);
690690

691691
/* see if we got back an empty string */
692-
if ((VARSIZE(slice)-VARHDRSZ)==0)
692+
if (VARSIZE_ANY_EXHDR(slice)==0)
693693
{
694694
if (slice!= (text*)DatumGetPointer(str))
695695
pfree(slice);
696696
returnPG_STR_GET_TEXT("");
697697
}
698698

699699
/* Now we can get the actual length of the slice in MB characters */
700-
slice_strlen=pg_mbstrlen_with_len(VARDATA(slice),VARSIZE(slice)-VARHDRSZ);
700+
slice_strlen=pg_mbstrlen_with_len(VARDATA_ANY(slice),
701+
VARSIZE_ANY_EXHDR(slice));
701702

702703
/*
703704
* Check that the start position wasn't > slice_strlen. If so, SQL99
@@ -722,7 +723,7 @@ text_substring(Datum str, int32 start, int32 length, bool length_not_specified)
722723
/*
723724
* Find the start position in the slice; remember S1 is not zero based
724725
*/
725-
p=VARDATA(slice);
726+
p=VARDATA_ANY(slice);
726727
for (i=0;i<S1-1;i++)
727728
p+=pg_mblen(p);
728729

@@ -762,8 +763,8 @@ text_substring(Datum str, int32 start, int32 length, bool length_not_specified)
762763
Datum
763764
textpos(PG_FUNCTION_ARGS)
764765
{
765-
text*str=PG_GETARG_TEXT_P(0);
766-
text*search_str=PG_GETARG_TEXT_P(1);
766+
text*str=PG_GETARG_TEXT_PP(0);
767+
text*search_str=PG_GETARG_TEXT_PP(1);
767768

768769
PG_RETURN_INT32((int32)text_position(str,search_str));
769770
}
@@ -808,15 +809,15 @@ text_position(text *t1, text *t2)
808809
staticvoid
809810
text_position_setup(text*t1,text*t2,TextPositionState*state)
810811
{
811-
intlen1=VARSIZE(t1)-VARHDRSZ;
812-
intlen2=VARSIZE(t2)-VARHDRSZ;
812+
intlen1=VARSIZE_ANY_EXHDR(t1);
813+
intlen2=VARSIZE_ANY_EXHDR(t2);
813814

814815
if (pg_database_encoding_max_length()==1)
815816
{
816817
/* simple case - single byte encoding */
817818
state->use_wchar= false;
818-
state->str1=VARDATA(t1);
819-
state->str2=VARDATA(t2);
819+
state->str1=VARDATA_ANY(t1);
820+
state->str2=VARDATA_ANY(t2);
820821
state->len1=len1;
821822
state->len2=len2;
822823
}
@@ -827,9 +828,9 @@ text_position_setup(text *t1, text *t2, TextPositionState *state)
827828
*p2;
828829

829830
p1= (pg_wchar*)palloc((len1+1)*sizeof(pg_wchar));
830-
len1=pg_mb2wchar_with_len(VARDATA(t1),p1,len1);
831+
len1=pg_mb2wchar_with_len(VARDATA_ANY(t1),p1,len1);
831832
p2= (pg_wchar*)palloc((len2+1)*sizeof(pg_wchar));
832-
len2=pg_mb2wchar_with_len(VARDATA(t2),p2,len2);
833+
len2=pg_mb2wchar_with_len(VARDATA_ANY(t2),p2,len2);
833834

834835
state->use_wchar= true;
835836
state->wstr1=p1;
@@ -2094,7 +2095,7 @@ byteacmp(PG_FUNCTION_ARGS)
20942095
staticvoid
20952096
appendStringInfoText(StringInfostr,consttext*t)
20962097
{
2097-
appendBinaryStringInfo(str,VARDATA(t),VARSIZE(t)-VARHDRSZ);
2098+
appendBinaryStringInfo(str,VARDATA_ANY(t),VARSIZE_ANY_EXHDR(t));
20982099
}
20992100

21002101
/*
@@ -2108,9 +2109,9 @@ appendStringInfoText(StringInfo str, const text *t)
21082109
Datum
21092110
replace_text(PG_FUNCTION_ARGS)
21102111
{
2111-
text*src_text=PG_GETARG_TEXT_P(0);
2112-
text*from_sub_text=PG_GETARG_TEXT_P(1);
2113-
text*to_sub_text=PG_GETARG_TEXT_P(2);
2112+
text*src_text=PG_GETARG_TEXT_PP(0);
2113+
text*from_sub_text=PG_GETARG_TEXT_PP(1);
2114+
text*to_sub_text=PG_GETARG_TEXT_PP(2);
21142115
intsrc_text_len;
21152116
intfrom_sub_text_len;
21162117
TextPositionStatestate;
@@ -2148,7 +2149,7 @@ replace_text(PG_FUNCTION_ARGS)
21482149
}
21492150

21502151
/* start_ptr points to the start_posn'th character of src_text */
2151-
start_ptr=(char*)VARDATA(src_text);
2152+
start_ptr=VARDATA_ANY(src_text);
21522153

21532154
initStringInfo(&str);
21542155

@@ -2172,7 +2173,7 @@ replace_text(PG_FUNCTION_ARGS)
21722173
while (curr_posn>0);
21732174

21742175
/* copy trailing data */
2175-
chunk_len= ((char*)src_text+VARSIZE(src_text))-start_ptr;
2176+
chunk_len= ((char*)src_text+VARSIZE_ANY(src_text))-start_ptr;
21762177
appendBinaryStringInfo(&str,start_ptr,chunk_len);
21772178

21782179
text_position_cleanup(&state);
@@ -2191,8 +2192,8 @@ replace_text(PG_FUNCTION_ARGS)
21912192
staticbool
21922193
check_replace_text_has_escape_char(consttext*replace_text)
21932194
{
2194-
constchar*p=VARDATA(replace_text);
2195-
constchar*p_end=p+(VARSIZE(replace_text)-VARHDRSZ);
2195+
constchar*p=VARDATA_ANY(replace_text);
2196+
constchar*p_end=p+VARSIZE_ANY_EXHDR(replace_text);
21962197

21972198
if (pg_database_encoding_max_length()==1)
21982199
{
@@ -2226,8 +2227,8 @@ appendStringInfoRegexpSubstr(StringInfo str, text *replace_text,
22262227
regmatch_t*pmatch,
22272228
char*start_ptr,intdata_pos)
22282229
{
2229-
constchar*p=VARDATA(replace_text);
2230-
constchar*p_end=p+(VARSIZE(replace_text)-VARHDRSZ);
2230+
constchar*p=VARDATA_ANY(replace_text);
2231+
constchar*p_end=p+VARSIZE_ANY_EXHDR(replace_text);
22312232
inteml=pg_database_encoding_max_length();
22322233

22332234
for (;;)
@@ -2332,7 +2333,7 @@ replace_text_regexp(text *src_text, void *regexp,
23322333
{
23332334
text*ret_text;
23342335
regex_t*re= (regex_t*)regexp;
2335-
intsrc_text_len=VARSIZE(src_text)-VARHDRSZ;
2336+
intsrc_text_len=VARSIZE_ANY_EXHDR(src_text);
23362337
StringInfoDatabuf;
23372338
regmatch_tpmatch[REGEXP_REPLACE_BACKREF_CNT];
23382339
pg_wchar*data;
@@ -2346,13 +2347,13 @@ replace_text_regexp(text *src_text, void *regexp,
23462347

23472348
/* Convert data string to wide characters. */
23482349
data= (pg_wchar*)palloc((src_text_len+1)*sizeof(pg_wchar));
2349-
data_len=pg_mb2wchar_with_len(VARDATA(src_text),data,src_text_len);
2350+
data_len=pg_mb2wchar_with_len(VARDATA_ANY(src_text),data,src_text_len);
23502351

23512352
/* Check whether replace_text has escape char. */
23522353
have_escape=check_replace_text_has_escape_char(replace_text);
23532354

23542355
/* start_ptr points to the data_pos'th character of src_text */
2355-
start_ptr= (char*)VARDATA(src_text);
2356+
start_ptr= (char*)VARDATA_ANY(src_text);
23562357
data_pos=0;
23572358

23582359
search_start=0;
@@ -2439,7 +2440,7 @@ replace_text_regexp(text *src_text, void *regexp,
24392440
{
24402441
intchunk_len;
24412442

2442-
chunk_len= ((char*)src_text+VARSIZE(src_text))-start_ptr;
2443+
chunk_len= ((char*)src_text+VARSIZE_ANY(src_text))-start_ptr;
24432444
appendBinaryStringInfo(&buf,start_ptr,chunk_len);
24442445
}
24452446

@@ -2459,8 +2460,8 @@ replace_text_regexp(text *src_text, void *regexp,
24592460
Datum
24602461
split_text(PG_FUNCTION_ARGS)
24612462
{
2462-
text*inputstring=PG_GETARG_TEXT_P(0);
2463-
text*fldsep=PG_GETARG_TEXT_P(1);
2463+
text*inputstring=PG_GETARG_TEXT_PP(0);
2464+
text*fldsep=PG_GETARG_TEXT_PP(1);
24642465
intfldnum=PG_GETARG_INT32(2);
24652466
intinputstring_len;
24662467
intfldsep_len;
@@ -2559,8 +2560,8 @@ split_text(PG_FUNCTION_ARGS)
25592560
Datum
25602561
text_to_array(PG_FUNCTION_ARGS)
25612562
{
2562-
text*inputstring=PG_GETARG_TEXT_P(0);
2563-
text*fldsep=PG_GETARG_TEXT_P(1);
2563+
text*inputstring=PG_GETARG_TEXT_PP(0);
2564+
text*fldsep=PG_GETARG_TEXT_PP(1);
25642565
intinputstring_len;
25652566
intfldsep_len;
25662567
TextPositionStatestate;
@@ -2601,7 +2602,7 @@ text_to_array(PG_FUNCTION_ARGS)
26012602

26022603
start_posn=1;
26032604
/* start_ptr points to the start_posn'th character of inputstring */
2604-
start_ptr=(char*)VARDATA(inputstring);
2605+
start_ptr=VARDATA_ANY(inputstring);
26052606

26062607
for (fldnum=1;;fldnum++)/* field number is 1 based */
26072608
{
@@ -2612,7 +2613,7 @@ text_to_array(PG_FUNCTION_ARGS)
26122613
if (end_posn==0)
26132614
{
26142615
/* fetch last field */
2615-
chunk_len= ((char*)inputstring+VARSIZE(inputstring))-start_ptr;
2616+
chunk_len= ((char*)inputstring+VARSIZE_ANY(inputstring))-start_ptr;
26162617
}
26172618
else
26182619
{

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