Several fixes uncovered with -pedantic

playerData.c:
proper error checking

directory.c:
properly check myFgets() for errors
(it returns NULL on error)

inputPlugins/mp3_plugin.c
get rid of commas at the end of enums

interface.c:
we weren't using long long, so strtoll isn't needed
get rid of void-pointer arithmetic

sllist.c:
get rid of void-pointer arithmetic

compress.c:
get rid of C++ comments, some compilers don't accept them

Note that I personally like void pointer arithmetic, but some
ancient compilers don't support them :(

git-svn-id: https://svn.musicpd.org/mpd/trunk@4510 09075e82-0dd4-0310-85a5-a0d7c8717e4f

src/compress.c

@@ -253,10 +253,10 @@ void CompressDo(void *data, unsigned int length)
 				  127);
 		clipped = 0;
 
-		// target line
-		//XDrawPoint(display, window, redGC,
-		//         pn, 127 - TARGET/256);
-		// amplification edge
+		/* target line */
+		/* XDrawPoint(display, window, redGC, */
+		/*         pn, 127 - TARGET/256); */
+		/* amplification edge */
 		XDrawLine(display, window, dkyellowGC,
 			  pn,
 			  127 - (peaks[pn]*gainCurrent
@@ -311,7 +311,7 @@ void CompressDo(void *data, unsigned int length)
 			   127 - (peak*gainCurrent
 				  >> (GAINSHIFT + 8)));
 
-		// gain indicator
+		/* gain indicator */
 		XFillRectangle(display, window, whiteGC, 0, 128,
 			       prefs.buckets, 8);
 		x = (gainTarget - (1 << GAINSHIFT))*prefs.buckets
@@ -326,7 +326,7 @@ void CompressDo(void *data, unsigned int length)
 			  x, 132 - 1,
 			  x, 132 + 1);
 
-		// blue peak line
+		/* blue peak line */
 		XDrawLine(display, window, blueGC,
 			  0, 127 - (peak >> 8), prefs.buckets,
 			  127 - (peak >> 8));

src/directory.c

@@ -940,14 +940,14 @@ static void readDirectoryInfo(FILE * fp, Directory * directory)
 	       && 0 != strncmp(DIRECTORY_END, buffer, strlen(DIRECTORY_END))) {
 		if (0 == strncmp(DIRECTORY_DIR, buffer, strlen(DIRECTORY_DIR))) {
 			key = strdup(&(buffer[strlen(DIRECTORY_DIR)]));
-			if (myFgets(buffer, bufferSize, fp) < 0) {
+			if (!myFgets(buffer, bufferSize, fp)) {
 				ERROR("Error reading db, fgets\n");
 				exit(EXIT_FAILURE);
 			}
 			/* for compatibility with db's prior to 0.11 */
 			if (0 == strncmp(DIRECTORY_MTIME, buffer,
 					 strlen(DIRECTORY_MTIME))) {
-				if (myFgets(buffer, bufferSize, fp) < 0) {
+				if (!myFgets(buffer, bufferSize, fp)) {
 					ERROR("Error reading db, fgets\n");
 					exit(EXIT_FAILURE);
 				}
@@ -1140,7 +1140,7 @@ int readDirectoryDB()
 		int foundFsCharset = 0;
 		int foundVersion = 0;
 
-		if (myFgets(buffer, bufferSize, fp) < 0) {
+		if (!myFgets(buffer, bufferSize, fp)) {
 			ERROR("Error reading db, fgets\n");
 			exit(EXIT_FAILURE);
 		}

src/inputPlugins/mp3_plugin.c

@@ -451,7 +451,7 @@ static int decodeNextFrame(mp3DecodeData * data)
 
 enum xing_magic {
 	XING_MAGIC_XING, /* VBR */
-	XING_MAGIC_INFO, /* CBR */
+	XING_MAGIC_INFO  /* CBR */
 };
 
 struct xing {
@@ -467,7 +467,7 @@ enum {
 	XING_FRAMES = 0x00000001L,
 	XING_BYTES  = 0x00000002L,
 	XING_TOC    = 0x00000004L,
-	XING_SCALE  = 0x00000008L,
+	XING_SCALE  = 0x00000008L
 };
 
 struct lame {

src/interface.c

@@ -570,8 +570,8 @@ void initInterfaces(void)
 	param = getConfigParam(CONF_MAX_COMMAND_LIST_SIZE);
 
 	if (param) {
-		interface_max_command_list_size = strtoll(param->value,
-							  &test, 10);
+		interface_max_command_list_size = strtol(param->value,
+							 &test, 10);
 		if (*test != '\0' || interface_max_command_list_size <= 0) {
 			ERROR("max command list size \"%s\" is not a positive "
 			      "integer, line %i\n", param->value, param->line);
@@ -583,8 +583,8 @@ void initInterfaces(void)
 	param = getConfigParam(CONF_MAX_OUTPUT_BUFFER_SIZE);
 
 	if (param) {
-		interface_max_output_buffer_size = strtoll(param->value, &test,
-							   10);
+		interface_max_output_buffer_size = strtol(param->value,
+		                                          &test, 10);
 		if (*test != '\0' || interface_max_output_buffer_size <= 0) {
 			ERROR("max output buffer size \"%s\" is not a positive "
 			      "integer, line %i\n", param->value, param->line);
@@ -660,7 +660,7 @@ static void flushInterfaceBuffer(Interface * interface)
 			break;
 		else if (ret < buf->size) {
 			interface->deferred_bytes -= ret;
-			buf->data += ret;
+			buf->data = (char *)buf->data + ret;
 			buf->size -= ret;
 		} else {
 			struct sllnode *tmp = buf;

src/playerData.c

@@ -96,7 +96,7 @@ void initPlayerData(void)
 		ERROR("problems shmget'ing\n");
 		exit(EXIT_FAILURE);
 	}
-	if ((playerData_pd = shmat(shmid, NULL, 0)) < 0) {
+	if (!(playerData_pd = shmat(shmid, NULL, 0))) {
 		ERROR("problems shmat'ing\n");
 		exit(EXIT_FAILURE);
 	}
@@ -112,7 +112,7 @@ void initPlayerData(void)
 		ERROR("problems shmget'ing\n");
 		exit(EXIT_FAILURE);
 	}
-	if ((player_pid = shmat(shmid, NULL, 0)) < 0) {
+	if (!(player_pid = shmat(shmid, NULL, 0))) {
 		ERROR("problems shmat'ing\n");
 		exit(EXIT_FAILURE);
 	}

src/sllist.c

@@ -39,7 +39,7 @@ struct strnode *new_strnode_dup(char *s, const size_t size)
 {
 	struct strnode *x = malloc(sizeof(struct strnode) + size);
 	x->next = NULL;
-	x->data = ((void *)x + sizeof(struct strnode));
+	x->data = ((char *)x + sizeof(struct strnode));
 	memcpy((void *)x->data, (void*)s, size);
 	return x;
 }
@@ -49,7 +49,7 @@ struct sllnode *new_sllnode(void *s, const size_t size)
 	struct sllnode *x = malloc(sizeof(struct sllnode) + size);
 	x->next = NULL;
 	x->size = size;
-	x->data = ((void *)x + sizeof(struct sllnode));
+	x->data = ((char *)x + sizeof(struct sllnode));
 	memcpy(x->data, (void *)s, size);
 	return x;
 }