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Cleanups for int8: guard against null inputs in comparison

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operators (and some other places), fix rangechecks in int8 to int4
conversion (same problem we recently figured out in pg_atoi).
This commit is contained in:
Tom Lane 1999-08-21 03:06:58 +00:00
parent d91baea025
commit 5588c559e6
1 changed files with 87 additions and 19 deletions
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106
src/backend/utils/adt/int8.c
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@ -9,13 +9,30 @@
#include <time.h>
#include <math.h>
#include <float.h>
#include <limits.h>
#include "postgres.h"
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#include "utils/int8.h"
#define MAXINT8LEN 25
#ifndef INT_MAX
#define INT_MAX (0x7FFFFFFFL)
#endif
#ifndef INT_MIN
#define INT_MIN (-INT_MAX-1)
#endif
#ifndef SHRT_MAX
#define SHRT_MAX (0x7FFF)
#endif
#ifndef SHRT_MIN
#define SHRT_MIN (-SHRT_MAX-1)
#endif
/***********************************************************************
**
@ -38,7 +55,7 @@ int8in(char *str)
int sign = 1;
if (!PointerIsValid(str))
elog(ERROR, "Bad (null) int8 external representation", NULL);
elog(ERROR, "Bad (null) int8 external representation");
/*
* Do our own scan, rather than relying on sscanf which might be
@ -78,7 +95,7 @@ int8out(int64 *val)
return NULL;
if ((len = snprintf(buf, MAXINT8LEN, INT64_FORMAT, *val)) < 0)
elog(ERROR, "Unable to format int8", NULL);
elog(ERROR, "Unable to format int8");
result = palloc(len + 1);
@ -98,36 +115,54 @@ int8out(int64 *val)
bool
int8eq(int64 *val1, int64 *val2)
{
if (!val1 || !val2)
return 0;
return *val1 == *val2;
} /* int8eq() */
bool
int8ne(int64 *val1, int64 *val2)
{
if (!val1 || !val2)
return 0;
return *val1 != *val2;
} /* int8ne() */
bool
int8lt(int64 *val1, int64 *val2)
{
if (!val1 || !val2)
return 0;
return *val1 < *val2;
} /* int8lt() */
bool
int8gt(int64 *val1, int64 *val2)
{
if (!val1 || !val2)
return 0;
return *val1 > *val2;
} /* int8gt() */
bool
int8le(int64 *val1, int64 *val2)
{
if (!val1 || !val2)
return 0;
return *val1 <= *val2;
} /* int8le() */
bool
int8ge(int64 *val1, int64 *val2)
{
if (!val1 || !val2)
return 0;
return *val1 >= *val2;
} /* int8ge() */
@ -138,36 +173,54 @@ int8ge(int64 *val1, int64 *val2)
bool
int84eq(int64 *val1, int32 val2)
{
if (!val1)
return 0;
return *val1 == val2;
} /* int84eq() */
bool
int84ne(int64 *val1, int32 val2)
{
if (!val1)
return 0;
return *val1 != val2;
} /* int84ne() */
bool
int84lt(int64 *val1, int32 val2)
{
if (!val1)
return 0;
return *val1 < val2;
} /* int84lt() */
bool
int84gt(int64 *val1, int32 val2)
{
if (!val1)
return 0;
return *val1 > val2;
} /* int84gt() */
bool
int84le(int64 *val1, int32 val2)
{
if (!val1)
return 0;
return *val1 <= val2;
} /* int84le() */
bool
int84ge(int64 *val1, int32 val2)
{
if (!val1)
return 0;
return *val1 >= val2;
} /* int84ge() */
@ -178,36 +231,54 @@ int84ge(int64 *val1, int32 val2)
bool
int48eq(int32 val1, int64 *val2)
{
if (!val2)
return 0;
return val1 == *val2;
} /* int48eq() */
bool
int48ne(int32 val1, int64 *val2)
{
if (!val2)
return 0;
return val1 != *val2;
} /* int48ne() */
bool
int48lt(int32 val1, int64 *val2)
{
if (!val2)
return 0;
return val1 < *val2;
} /* int48lt() */
bool
int48gt(int32 val1, int64 *val2)
{
if (!val2)
return 0;
return val1 > *val2;
} /* int48gt() */
bool
int48le(int32 val1, int64 *val2)
{
if (!val2)
return 0;
return val1 <= *val2;
} /* int48le() */
bool
int48ge(int32 val1, int64 *val2)
{
if (!val2)
return 0;
return val1 >= *val2;
} /* int48ge() */
@ -436,19 +507,10 @@ int84(int64 *val)
int32 result;
if (!PointerIsValid(val))
elog(ERROR, "Invalid (null) int64, can't convert int8 to int4", NULL);
elog(ERROR, "Invalid (null) int64, can't convert int8 to int4");
#if NOT_USED
/*
* Hmm. This conditional always tests true on my i686/linux box. It's
* a gcc compiler bug, or I'm missing something obvious, which is more
* likely... - thomas 1998-06-09
*/
if ((*val < INT_MIN) || (*val > INT_MAX))
#endif
if ((*val < (-pow(2, 31) + 1)) || (*val > (pow(2, 31) - 1)))
elog(ERROR, "int8 conversion to int4 is out of range", NULL);
elog(ERROR, "int8 conversion to int4 is out of range");
result = *val;
@ -474,10 +536,10 @@ int82(int64 *val)
int16 result;
if (!PointerIsValid(val))
elog(ERROR, "Invalid (null) int8, can't convert to int2", NULL);
elog(ERROR, "Invalid (null) int8, can't convert to int2");
if ((*val < (-pow(2, 15) + 1)) || (*val > (pow(2, 15) - 1)))
elog(ERROR, "int8 conversion to int2 is out of range", NULL);
if ((*val < SHRT_MIN) || (*val > SHRT_MAX))
elog(ERROR, "int8 conversion to int2 is out of range");
result = *val;
@ -491,6 +553,9 @@ i8tod(int64 *val)
{
float64 result = palloc(sizeof(float64data));
if (!PointerIsValid(val))
elog(ERROR, "Invalid (null) int8, can't convert to float8");
*result = *val;
return result;
@ -511,8 +576,11 @@ dtoi8(float64 val)
{
int64 *result = palloc(sizeof(int64));
if (!PointerIsValid(val))
elog(ERROR, "Invalid (null) float8, can't convert to int8");
if ((*val < (-pow(2, 63) + 1)) || (*val > (pow(2, 63) - 1)))
elog(ERROR, "Floating point conversion to int64 is out of range", NULL);
elog(ERROR, "Floating point conversion to int64 is out of range");
*result = *val;
@ -528,7 +596,7 @@ text_int8(text *str)
char *s;
if (!PointerIsValid(str))
elog(ERROR, "Bad (null) int8 external representation", NULL);
elog(ERROR, "Bad (null) int8 external representation");
len = (VARSIZE(str) - VARHDRSZ);
s = palloc(len + 1);