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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2011-03-11 19:04:02 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2011-03-11 19:04:02 -0500 |
| commit | 2a26639a5d76df7f59340cfb4313763f87815ede (patch) | |
| tree | d0ee4662c8dd6ae5a4904451fa8c1011f18bf87c /src/backend/utils/adt/int.c | |
| parent | 72330995a52fb7a3fbdc666aebc0402cdcbc9af8 (diff) | |
| download | postgresql-2a26639a5d76df7f59340cfb4313763f87815ede.tar.gz postgresql-2a26639a5d76df7f59340cfb4313763f87815ede.zip | |
On further reflection, we'd better do the same in int.c.
We previously heard of the same problem in int24div(), so there's not a
good reason to suppose the problem is confined to cases involving int8.
Diffstat (limited to 'src/backend/utils/adt/int.c')
| -rw-r--r-- | src/backend/utils/adt/int.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/backend/utils/adt/int.c b/src/backend/utils/adt/int.c index 78bac406ed2..dcb31586b2b 100644 --- a/src/backend/utils/adt/int.c +++ b/src/backend/utils/adt/int.c @@ -723,9 +723,13 @@ int4div(PG_FUNCTION_ARGS) int32 result; if (arg2 == 0) + { ereport(ERROR, (errcode(ERRCODE_DIVISION_BY_ZERO), errmsg("division by zero"))); + /* ensure compiler realizes we mustn't reach the division (gcc bug) */ + PG_RETURN_NULL(); + } #ifdef WIN32 @@ -864,9 +868,13 @@ int2div(PG_FUNCTION_ARGS) int16 result; if (arg2 == 0) + { ereport(ERROR, (errcode(ERRCODE_DIVISION_BY_ZERO), errmsg("division by zero"))); + /* ensure compiler realizes we mustn't reach the division (gcc bug) */ + PG_RETURN_NULL(); + } result = arg1 / arg2; @@ -1048,9 +1056,13 @@ int42div(PG_FUNCTION_ARGS) int32 result; if (arg2 == 0) + { ereport(ERROR, (errcode(ERRCODE_DIVISION_BY_ZERO), errmsg("division by zero"))); + /* ensure compiler realizes we mustn't reach the division (gcc bug) */ + PG_RETURN_NULL(); + } result = arg1 / arg2; @@ -1074,9 +1086,13 @@ int4mod(PG_FUNCTION_ARGS) int32 arg2 = PG_GETARG_INT32(1); if (arg2 == 0) + { ereport(ERROR, (errcode(ERRCODE_DIVISION_BY_ZERO), errmsg("division by zero"))); + /* ensure compiler realizes we mustn't reach the division (gcc bug) */ + PG_RETURN_NULL(); + } /* SELECT ((-2147483648)::int4) % (-1); causes a floating point exception */ if (arg1 == INT_MIN && arg2 == -1) @@ -1094,9 +1110,14 @@ int2mod(PG_FUNCTION_ARGS) int16 arg2 = PG_GETARG_INT16(1); if (arg2 == 0) + { ereport(ERROR, (errcode(ERRCODE_DIVISION_BY_ZERO), errmsg("division by zero"))); + /* ensure compiler realizes we mustn't reach the division (gcc bug) */ + PG_RETURN_NULL(); + } + /* No overflow is possible */ PG_RETURN_INT16(arg1 % arg2); |