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plpgsql_dstring_append was broken for long strings.

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This commit is contained in:
Tom Lane 2002-05-05 17:38:28 +00:00
parent ffd1a5d853
commit 77c4ba63b8
1 changed files with 8 additions and 3 deletions
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11
src/pl/plpgsql/src/pl_funcs.c
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@ -3,7 +3,7 @@
* procedural language * procedural language
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/pl/plpgsql/src/pl_funcs.c,v 1.17 2001/11/15 23:31:09 tgl Exp $ * $Header: /cvsroot/pgsql/src/pl/plpgsql/src/pl_funcs.c,v 1.17.2.1 2002/05/05 17:38:28 tgl Exp $
* *
* This software is copyrighted by Jan Wieck - Hamburg. * This software is copyrighted by Jan Wieck - Hamburg.
* *
@ -64,6 +64,7 @@ plpgsql_dstring_init(PLpgSQL_dstring * ds)
{ {
ds->value = palloc(ds->alloc = 512); ds->value = palloc(ds->alloc = 512);
ds->used = 0; ds->used = 0;
ds->value[0] = '\0';
} }
@ -86,10 +87,14 @@ void
plpgsql_dstring_append(PLpgSQL_dstring * ds, char *str) plpgsql_dstring_append(PLpgSQL_dstring * ds, char *str)
{ {
int len = strlen(str); int len = strlen(str);
int needed = ds->used + len + 1;
if (ds->used + len + 1 > ds->alloc) if (needed > ds->alloc)
{ {
ds->alloc *= 2; /* might have to double more than once, if len is large */
do {
ds->alloc *= 2;
} while (needed > ds->alloc);
ds->value = repalloc(ds->value, ds->alloc); ds->value = repalloc(ds->value, ds->alloc);
} }