Compilation fix for old compilers

1 files changed, 15 insertions, 8 deletions

diff --git a/example/ndpi_util.c b/example/ndpi_util.c
index cd3c8a1e3..783f05c86 100644
--- a/example/ndpi_util.c
+++ b/example/ndpi_util.c
@@ -915,7 +915,9 @@ struct ndpi_proto ndpi_workflow_process_packet (struct ndpi_workflow * workflow,
 /* ********************************************************** */
 
 static uint32_t crc32_for_byte(uint32_t r) {
-	for(int j = 0; j < 8; ++j)
+	int j;
+	
+	for(j = 0; j < 8; ++j)
 		r = (r & 1? 0: (uint32_t)0xEDB88320L) ^ r >> 1;
 	return r ^ (uint32_t)0xFF000000L;
 }
@@ -926,11 +928,13 @@ static uint32_t crc32_for_byte(uint32_t r) {
 typedef unsigned long accum_t;
 
 static void init_tables(uint32_t* table, uint32_t* wtable) {
-	for(size_t i = 0; i < 0x100; ++i)
+	size_t i, k, w, j;
+	
+	for(i = 0; i < 0x100; ++i)
 		table[i] = crc32_for_byte(i);
-	for(size_t k = 0; k < sizeof(accum_t); ++k)
-		for(size_t w, i = 0; i < 0x100; ++i) {
-			for(size_t j = w = 0; j < sizeof(accum_t); ++j)
+	for(k = 0; k < sizeof(accum_t); ++k)
+		for(i = 0; i < 0x100; ++i) {
+			for(j = w = 0; j < sizeof(accum_t); ++j)
 				w = table[(uint8_t)(j == k? w ^ i: w)] ^ w >> 8;
 			wtable[(k << 8) + i] = w ^ (k? wtable[0]: 0);
 		}
@@ -939,13 +943,16 @@ static void init_tables(uint32_t* table, uint32_t* wtable) {
 void ethernet_crc32(const void* data, size_t n_bytes, uint32_t* crc) {
 	static uint32_t table[0x100], wtable[0x100*sizeof(accum_t)];
 	size_t n_accum = n_bytes/sizeof(accum_t);
+	size_t i, k, j;
+	
 	if(!*table)
 		init_tables(table, wtable);
-	for(size_t i = 0; i < n_accum; ++i) {
+	for(i = 0; i < n_accum; ++i) {
 		accum_t a = *crc ^ ((accum_t*)data)[i];
-		for(size_t j = *crc = 0; j < sizeof(accum_t); ++j)
+		for(j = *crc = 0; j < sizeof(accum_t); ++j)
 			*crc ^= wtable[(j << 8) + (uint8_t)(a >> 8*j)];
 	}
-	for(size_t i = n_accum*sizeof(accum_t); i < n_bytes; ++i)
+	
+	for(i = n_accum*sizeof(accum_t); i < n_bytes; ++i)
 		*crc = table[(uint8_t)*crc ^ ((uint8_t*)data)[i]] ^ *crc >> 8;
 }