diff options
Diffstat (limited to 'src/backend/parser')
| -rw-r--r-- | src/backend/parser/gram.y | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y index 26a3198d37b..5c716dd8f22 100644 --- a/src/backend/parser/gram.y +++ b/src/backend/parser/gram.y @@ -11,7 +11,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.621 2008/09/01 20:42:44 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/parser/gram.y,v 2.622 2008/09/02 20:37:54 tgl Exp $ * * HISTORY * AUTHOR DATE MAJOR EVENT @@ -79,6 +79,17 @@ */ #define base_yylex filtered_base_yylex +/* + * Bison doesn't allocate anything that needs to live across parser calls, + * so we can easily have it use palloc instead of malloc. This prevents + * memory leaks if we error out during parsing. Note this only works with + * bison >= 2.0. However, in bison 1.875 the default is to use alloca() + * if possible, so there's not really much problem anyhow, at least if + * you're building with gcc. + */ +#define YYMALLOC palloc +#define YYFREE pfree + extern List *parsetree; /* final parse result is delivered here */ static bool QueryIsRule = FALSE; |