Avoid compiler warnings due to possibly unused variables

gcc 4.6 complains about these because of the new option
-Wunused-but-set-variable which comes in with -Wall, so cast them to
void, which avoids the warning.

diff --git a/src/backend/nodes/read.c b/src/backend/nodes/read.c
index 78775e8..ec8e87b 100644 (file)
--- a/src/backend/nodes/read.c
+++ b/src/backend/nodes/read.c
@@ -224,6 +224,7 @@ 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 */

diff --git a/src/backend/nodes/readfuncs.c b/src/backend/nodes/readfuncs.c
index 2288514..29a0e8f 100644 (file)
--- a/src/backend/nodes/readfuncs.c
+++ b/src/backend/nodes/readfuncs.c
@@ -48,7 +48,8 @@
 /* And a few guys need only the pg_strtok support fields */
 #define READ_TEMP_LOCALS()     \
        char       *token;              \
-       int                     length
+       int                     length;         \
+       (void) token /* possibly unused */
 
 /* ... but most need both */
 #define READ_LOCALS(nodeTypeName)                      \