Change internal integer representation of Value node

A Value node would store an integer as a long.  This causes needless
portability risks, as long can be of varying sizes.  Change it to use
int instead.  All code using this was already careful to only store
32-bit values anyway.

Reviewed-by: Michael Paquier <michael@paquier.xyz>

src/backend/nodes/outfuncs.c

@@ -3235,7 +3235,7 @@ _outValue(StringInfo str, const Value *value)
 	switch (value->type)
 	{
 		case T_Integer:
-			appendStringInfo(str, "%ld", value->val.ival);
+			appendStringInfo(str, "%d", value->val.ival);
 			break;
 		case T_Float:
 

src/backend/nodes/read.c

@@ -224,13 +224,9 @@ nodeTokenType(char *token, int length)
 
 		errno = 0;
 		val = strtol(token, &endptr, 10);
-		(void) val;				/* avoid compiler warning if unused */
-		if (endptr != token + length || errno == ERANGE
-#ifdef HAVE_LONG_INT_64
-		/* if long > 32 bits, check for overflow of int4 */
-			|| val != (long) ((int32) val)
-#endif
-			)
+		if (endptr != token + length || errno == ERANGE ||
+			/* check for overflow of int */
+			val != (int) val)
 			return T_Float;
 		return T_Integer;
 	}
@@ -387,9 +383,9 @@ nodeRead(char *token, int tok_len)
 		case T_Integer:
 
 			/*
-			 * we know that the token terminates on a char atol will stop at
+			 * we know that the token terminates on a char atoi will stop at
 			 */
-			result = (Node *) makeInteger(atol(token));
+			result = (Node *) makeInteger(atoi(token));
 			break;
 		case T_Float:
 			{

src/backend/nodes/value.c

@@ -20,7 +20,7 @@
  *	makeInteger
  */
 Value *
-makeInteger(long i)
+makeInteger(int i)
 {
 	Value	   *v = makeNode(Value);
 

src/backend/parser/scan.l

@@ -1216,12 +1216,9 @@ process_integer_literal(const char *token, YYSTYPE *lval)
 
 	errno = 0;
 	val = strtol(token, &endptr, 10);
-	if (*endptr != '\0' || errno == ERANGE
-#ifdef HAVE_LONG_INT_64
-	/* if long > 32 bits, check for overflow of int4 */
-		|| val != (long) ((int32) val)
-#endif
-		)
+	if (*endptr != '\0' || errno == ERANGE ||
+		/* check for overflow of int */
+		val != (int) val)
 	{
 		/* integer too large, treat it as a float */
 		lval->str = pstrdup(token);

src/backend/utils/misc/guc.c

@@ -6913,7 +6913,7 @@ flatten_set_variable_args(const char *name, List *args)
 		switch (nodeTag(&con->val))
 		{
 			case T_Integer:
-				appendStringInfo(&buf, "%ld", intVal(&con->val));
+				appendStringInfo(&buf, "%d", intVal(&con->val));
 				break;
 			case T_Float:
 				/* represented as a string, so just copy it */

src/include/nodes/value.h

@@ -34,7 +34,7 @@
  * better to use the more general representation.)
  *
  * Note that an integer-looking string will get lexed as T_Float if
- * the value is too large to fit in a 'long'.
+ * the value is too large to fit in an 'int'.
  *
  * Nulls, of course, don't need the value part at all.
  *----------------------
@@ -44,7 +44,7 @@ typedef struct Value
 	NodeTag		type;			/* tag appropriately (eg. T_String) */
 	union ValUnion
 	{
-		long		ival;		/* machine integer */
+		int			ival;		/* machine integer */
 		char	   *str;		/* string */
 	}			val;
 } Value;
@@ -53,7 +53,7 @@ typedef struct Value
 #define floatVal(v)		atof(((Value *)(v))->val.str)
 #define strVal(v)		(((Value *)(v))->val.str)
 
-extern Value *makeInteger(long i);
+extern Value *makeInteger(int i);
 extern Value *makeFloat(char *numericStr);
 extern Value *makeString(char *str);
 extern Value *makeBitString(char *str);

src/interfaces/ecpg/preproc/pgc.l

@@ -732,12 +732,9 @@ cppline			{space}*#([^i][A-Za-z]*|{if}|{ifdef}|{ifndef}|{import})((\/\*[^*/]*\*+
 
 						errno = 0;
 						val = strtol((char *)yytext, &endptr,10);
-						if (*endptr != '\0' || errno == ERANGE
-#ifdef HAVE_LONG_INT_64
-							/* if long > 32 bits, check for overflow of int4 */
-							|| val != (long) ((int32) val)
-#endif
-							)
+						if (*endptr != '\0' || errno == ERANGE ||
+							/* check for overflow of int */
+							val != (int) val)
 						{
 							errno = 0;
 							base_yylval.str = mm_strdup(yytext);