Support for higher version compilers

Makefile

@@ -2,7 +2,7 @@ MAJOR=3
 MINOR=1
 PLATFORM_LDFLAGS=-pthread
 PLATFORM_SHARED_CFLAGS=-fPIC
-PLATFORM_SHARED_LDFLAGS=-c -W -Wall -Werror -std=c99
+PLATFORM_SHARED_LDFLAGS=-c -W -Wall -Werror -std=gnu2x
 
 ifdef ENABLE_ASAN
 		WITH_SAN = -fsanitize=address -fno-omit-frame-pointer

util/pma.h

@@ -33,7 +33,7 @@ struct pma {
 	ness_rwlock_t slots_rwlock;
 };
 
-struct pma *pma_new();
+struct pma *pma_new(int);
 void pma_free(struct pma *);
 
 void pma_insert(struct pma *, void *, compare_func f, void *);

util/snappy.c

@@ -1428,13 +1428,13 @@ static inline int compress(struct snappy_env *env, struct source *reader,
                            struct sink *writer)
 {
 	int err;
-	size_t written = 0;
+//	size_t written = 0;
 	int N = available(reader);
 	char ulength[kmax32];
 	char *p = varint_encode32(ulength, N);
 
 	append(writer, ulength, p - ulength);
-	written += (p - ulength);
+//	written += (p - ulength);
 
 	while (N > 0) {
 		/* Get next block to compress (without copying if possible) */
@@ -1490,7 +1490,7 @@ static inline int compress(struct snappy_env *env, struct source *reader,
 		char *end = compress_fragment(fragment, fragment_size,
 		                              dest, table, table_size);
 		append(writer, dest, end - dest);
-		written += (end - dest);
+//		written += (end - dest);
 
 		N -= num_to_read;
 		skip(reader, pending_advance);