Rename the C functions bitand(), bitor() to bit_and(), bit_or().

This is to avoid use of the C++ keywords "bitand" and "bitor" in
the header file utils/varbit.h.  Note the functions' SQL-level
names are not changed, only their C-level names.

In passing, make some comments in varbit.c conform to project-standard
layout.

src/backend/utils/adt/varbit.c

@@ -29,7 +29,9 @@ static VarBit *bitsubstring(VarBit *arg, int32 s, int32 l,
 static VarBit *bit_overlay(VarBit *t1, VarBit *t2, int sp, int sl);
 
 
-/* common code for bittypmodin and varbittypmodin */
+/*
+ * common code for bittypmodin and varbittypmodin
+ */
 static int32
 anybit_typmodin(ArrayType *ta, const char *typename)
 {
@@ -64,7 +66,9 @@ anybit_typmodin(ArrayType *ta, const char *typename)
 	return typmod;
 }
 
-/* common code for bittypmodout and varbittypmodout */
+/*
+ * common code for bittypmodout and varbittypmodout
+ */
 static char *
 anybit_typmodout(int32 typmod)
 {
@@ -233,8 +237,10 @@ bit_out(PG_FUNCTION_ARGS)
 	/* same as varbit output */
 	return varbit_out(fcinfo);
 #else
-/* This is how one would print a hex string, in case someone wants to
-   write a formatting function. */
+	/*
+	 * This is how one would print a hex string, in case someone wants to
+	 * write a formatting function.
+	 */
 	VarBit	   *s = PG_GETARG_VARBIT_P(0);
 	char	   *result,
 			   *r;
@@ -330,7 +336,8 @@ bit_send(PG_FUNCTION_ARGS)
 	return varbit_send(fcinfo);
 }
 
-/* bit()
+/*
+ * bit()
  * Converts a bit() type to a specific internal length.
  * len is the bitlength specified in the column definition.
  *
@@ -523,7 +530,8 @@ varbit_in(PG_FUNCTION_ARGS)
 	PG_RETURN_VARBIT_P(result);
 }
 
-/* varbit_out -
+/*
+ * varbit_out -
  *	  Prints the string as bits to preserve length accurately
  */
 Datum
@@ -636,7 +644,8 @@ varbit_send(PG_FUNCTION_ARGS)
 	PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
 }
 
-/* varbit()
+/*
+ * varbit()
  * Converts a varbit() type to a specific internal length.
  * len is the maximum bitlength specified in the column definition.
  *
@@ -718,7 +727,8 @@ varbittypmodout(PG_FUNCTION_ARGS)
  * need to be so careful.
  */
 
-/* bit_cmp
+/*
+ * bit_cmp
  *
  * Compares two bitstrings and returns <0, 0, >0 depending on whether the first
  * string is smaller, equal, or bigger than the second. All bits are considered
@@ -871,7 +881,8 @@ bitcmp(PG_FUNCTION_ARGS)
 	PG_RETURN_INT32(result);
 }
 
-/* bitcat
+/*
+ * bitcat
  * Concatenation of bit strings
  */
 Datum
@@ -931,7 +942,8 @@ bit_catenate(VarBit *arg1, VarBit *arg2)
 	return result;
 }
 
-/* bitsubstr
+/*
+ * bitsubstr
  * retrieve a substring from the bit string.
  * Note, s is 1-based.
  * SQL draft 6.10 9)
@@ -1105,7 +1117,8 @@ bit_overlay(VarBit *t1, VarBit *t2, int sp, int sl)
 	return result;
 }
 
-/* bitlength, bitoctetlength
+/*
+ * bitlength, bitoctetlength
  * Return the length of a bit string
  */
 Datum
@@ -1124,11 +1137,12 @@ bitoctetlength(PG_FUNCTION_ARGS)
 	PG_RETURN_INT32(VARBITBYTES(arg));
 }
 
-/* bitand
+/*
+ * bit_and
  * perform a logical AND on two bit strings.
  */
 Datum
-bitand(PG_FUNCTION_ARGS)
+bit_and(PG_FUNCTION_ARGS)
 {
 	VarBit	   *arg1 = PG_GETARG_VARBIT_P(0);
 	VarBit	   *arg2 = PG_GETARG_VARBIT_P(1);
@@ -1164,11 +1178,12 @@ bitand(PG_FUNCTION_ARGS)
 	PG_RETURN_VARBIT_P(result);
 }
 
-/* bitor
+/*
+ * bit_or
  * perform a logical OR on two bit strings.
  */
 Datum
-bitor(PG_FUNCTION_ARGS)
+bit_or(PG_FUNCTION_ARGS)
 {
 	VarBit	   *arg1 = PG_GETARG_VARBIT_P(0);
 	VarBit	   *arg2 = PG_GETARG_VARBIT_P(1);
@@ -1210,7 +1225,8 @@ bitor(PG_FUNCTION_ARGS)
 	PG_RETURN_VARBIT_P(result);
 }
 
-/* bitxor
+/*
+ * bitxor
  * perform a logical XOR on two bit strings.
  */
 Datum
@@ -1257,7 +1273,8 @@ bitxor(PG_FUNCTION_ARGS)
 	PG_RETURN_VARBIT_P(result);
 }
 
-/* bitnot
+/*
+ * bitnot
  * perform a logical NOT on a bit string.
  */
 Datum
@@ -1289,7 +1306,8 @@ bitnot(PG_FUNCTION_ARGS)
 	PG_RETURN_VARBIT_P(result);
 }
 
-/* bitshiftleft
+/*
+ * bitshiftleft
  * do a left shift (i.e. towards the beginning of the string)
  */
 Datum
@@ -1348,7 +1366,8 @@ bitshiftleft(PG_FUNCTION_ARGS)
 	PG_RETURN_VARBIT_P(result);
 }
 
-/* bitshiftright
+/*
+ * bitshiftright
  * do a right shift (i.e. towards the end of the string)
  */
 Datum
@@ -1575,7 +1594,8 @@ bittoint8(PG_FUNCTION_ARGS)
 }
 
 
-/* Determines the position of S2 in the bitstring S1 (1-based string).
+/*
+ * Determines the position of S2 in the bitstring S1 (1-based string).
  * If S2 does not appear in S1 this function returns 0.
  * If S2 is of length 0 this function returns 1.
  * Compatible in usage with POSITION() functions for other data types.

src/include/catalog/catversion.h

@@ -53,6 +53,6 @@
  */
 
 /*							yyyymmddN */
-#define CATALOG_VERSION_NO	201012161
+#define CATALOG_VERSION_NO	201012271
 
 #endif

src/include/catalog/pg_proc.h

@@ -2396,9 +2396,9 @@ DESCR("less than");
 DATA(insert OID = 1672 (  varbitcmp			PGNSP PGUID 12 1 0 0 f f f t f i 2 0 23 "1562 1562" _null_ _null_ _null_ _null_ bitcmp _null_ _null_ _null_ ));
 DESCR("compare");
 
-DATA(insert OID = 1673 (  bitand			PGNSP PGUID 12 1 0 0 f f f t f i 2 0 1560 "1560 1560" _null_ _null_ _null_ _null_	bitand _null_ _null_ _null_ ));
+DATA(insert OID = 1673 (  bitand			PGNSP PGUID 12 1 0 0 f f f t f i 2 0 1560 "1560 1560" _null_ _null_ _null_ _null_	bit_and _null_ _null_ _null_ ));
 DESCR("bitwise and");
-DATA(insert OID = 1674 (  bitor				PGNSP PGUID 12 1 0 0 f f f t f i 2 0 1560 "1560 1560" _null_ _null_ _null_ _null_	bitor _null_ _null_ _null_ ));
+DATA(insert OID = 1674 (  bitor				PGNSP PGUID 12 1 0 0 f f f t f i 2 0 1560 "1560 1560" _null_ _null_ _null_ _null_	bit_or _null_ _null_ _null_ ));
 DESCR("bitwise or");
 DATA(insert OID = 1675 (  bitxor			PGNSP PGUID 12 1 0 0 f f f t f i 2 0 1560 "1560 1560" _null_ _null_ _null_ _null_	bitxor _null_ _null_ _null_ ));
 DESCR("bitwise exclusive or");

src/include/utils/varbit.h

@@ -80,8 +80,9 @@ extern Datum bitle(PG_FUNCTION_ARGS);
 extern Datum bitgt(PG_FUNCTION_ARGS);
 extern Datum bitge(PG_FUNCTION_ARGS);
 extern Datum bitcmp(PG_FUNCTION_ARGS);
-extern Datum bitand(PG_FUNCTION_ARGS);
-extern Datum bitor(PG_FUNCTION_ARGS);
+/* avoid the names bitand and bitor, since they are C++ keywords */
+extern Datum bit_and(PG_FUNCTION_ARGS);
+extern Datum bit_or(PG_FUNCTION_ARGS);
 extern Datum bitxor(PG_FUNCTION_ARGS);
 extern Datum bitnot(PG_FUNCTION_ARGS);
 extern Datum bitshiftleft(PG_FUNCTION_ARGS);