release v0.18.22

Return false on error, not nullptr.

NEWS

@@ -1,3 +1,12 @@
+ver 0.18.22 (2014/01/14)
+* fix clang 3.6 warnings
+
+ver 0.18.21 (2014/12/17)
+* playlist
+  - embcue: fix filename suffix detection
+* decoder
+  - ffmpeg: fix time stamp underflow
+
 ver 0.18.20 (2014/12/08)
 * decoder
   - ffmpeg: support FFmpeg 2.5

configure.ac

@@ -1,10 +1,10 @@
 AC_PREREQ(2.60)
 
-AC_INIT(mpd, 0.18.20, mpd-devel@musicpd.org)
+AC_INIT(mpd, 0.18.22, mpd-devel@musicpd.org)
 
 VERSION_MAJOR=0
 VERSION_MINOR=18
-VERSION_REVISION=20
+VERSION_REVISION=22
 VERSION_EXTRA=0
 
 AC_CONFIG_SRCDIR([src/Main.cxx])

src/Compiler.h

@@ -20,33 +20,45 @@
 #ifndef COMPILER_H
 #define COMPILER_H
 
-#define GCC_CHECK_VERSION(major, minor) \
-  (defined(__GNUC__) &&                                                 \
-   (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))))
+#define GCC_MAKE_VERSION(major, minor, patchlevel) ((major) * 10000 + (minor) * 100 + patchlevel)
 
 #ifdef __GNUC__
-#define GCC_VERSION (__GNUC__ * 10000 \
-                     + __GNUC_MINOR__ * 100 \
-                     + __GNUC_PATCHLEVEL__)
+#define GCC_VERSION GCC_MAKE_VERSION(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
 #else
 #define GCC_VERSION 0
 #endif
 
+#define GCC_CHECK_VERSION(major, minor) \
+	(defined(__GNUC__) && GCC_VERSION >= GCC_MAKE_VERSION(major, minor, 0))
+
+/**
+ * Are we building with gcc (not clang or any other compiler) and a
+ * version older than the specified one?
+ */
+#define GCC_OLDER_THAN(major, minor) \
+	(defined(__GNUC__) && !defined(__clang__) && \
+	 GCC_VERSION < GCC_MAKE_VERSION(major, minor, 0))
+
 #ifdef __clang__
-#  define CLANG_VERSION (__clang_major__ * 10000 \
-			 + __clang_minor__ * 100 \
-			 + __clang_patchlevel__)
+#  define CLANG_VERSION GCC_MAKE_VERSION(__clang_major__, __clang_minor__, __clang_patchlevel__)
 #  if __clang_major__ < 3
 #    error Sorry, your clang version is too old.  You need at least version 3.1.
 #  endif
 #elif defined(__GNUC__)
-#  if !GCC_CHECK_VERSION(4,6)
+#  if GCC_OLDER_THAN(4,6)
 #    error Sorry, your gcc version is too old.  You need at least version 4.6.
 #  endif
 #else
 #  warning Untested compiler.  Use at your own risk!
 #endif
 
+/**
+ * Are we building with the specified version of clang or newer?
+ */
+#define CLANG_CHECK_VERSION(major, minor) \
+	(defined(__clang__) && \
+	 CLANG_VERSION >= GCC_MAKE_VERSION(major, minor, 0))
+
 #if GCC_CHECK_VERSION(4,0)
 
 /* GCC 4.x */
@@ -141,7 +153,7 @@
 #if defined(__cplusplus)
 
 /* support for C++11 "override" was added in gcc 4.7 */
-#if !defined(__clang__) && !GCC_CHECK_VERSION(4,7)
+#if GCC_OLDER_THAN(4,7)
 #define override
 #define final
 #endif

src/DatabaseGlue.cxx

@@ -112,13 +112,15 @@ db_get_root(void)
 Directory *
 db_get_directory(const char *name)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
+	assert(name != nullptr);
+#endif
+
 	if (db == nullptr)
 		return nullptr;
 
 	Directory *music_root = db_get_root();
-	if (name == nullptr)
-		return music_root;
-
 	return music_root->LookupDirectory(name);
 }
 

src/DecoderPlugin.cxx

@@ -26,7 +26,10 @@
 bool
 DecoderPlugin::SupportsSuffix(const char *suffix) const
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(suffix != nullptr);
+#endif
 
 	return suffixes != nullptr && string_array_contains(suffixes, suffix);
 
@@ -35,7 +38,10 @@ DecoderPlugin::SupportsSuffix(const char *suffix) const
 bool
 DecoderPlugin::SupportsMimeType(const char *mime_type) const
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(mime_type != nullptr);
+#endif
 
 	return mime_types != nullptr &&
 		string_array_contains(mime_types, mime_type);

src/Directory.cxx

@@ -40,7 +40,10 @@ extern "C" {
 inline Directory *
 Directory::Allocate(const char *path)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(path != nullptr);
+#endif
 
 	const size_t path_size = strlen(path) + 1;
 	Directory *directory =

src/InputStream.cxx

@@ -155,7 +155,10 @@ InputStream::IsAvailable()
 size_t
 InputStream::Read(void *ptr, size_t _size, Error &error)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(ptr != nullptr);
+#endif
 	assert(_size > 0);
 
 	return plugin.read(this, ptr, _size, error);
@@ -164,7 +167,10 @@ InputStream::Read(void *ptr, size_t _size, Error &error)
 size_t
 InputStream::LockRead(void *ptr, size_t _size, Error &error)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(ptr != nullptr);
+#endif
 	assert(_size > 0);
 
 	const ScopeLock protect(mutex);

src/SongFilter.cxx

@@ -78,7 +78,10 @@ SongFilter::Item::Item(unsigned _tag, const char *_value, bool _fold_case)
 bool
 SongFilter::Item::StringMatch(const char *s) const
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(s != nullptr);
+#endif
 
 	if (fold_case) {
 		char *p = g_utf8_casefold(s, -1);

src/db/ProxyDatabasePlugin.cxx

@@ -57,7 +57,7 @@ public:
 	virtual void Close() override;
 	virtual Song *GetSong(const char *uri_utf8,
 				     Error &error) const override;
-	virtual void ReturnSong(Song *song) const;
+	void ReturnSong(Song *song) const override;
 
 	virtual bool Visit(const DatabaseSelection &selection,
 			   VisitDirectory visit_directory,
@@ -592,7 +592,7 @@ ProxyDatabase::Visit(const DatabaseSelection &selection,
 {
 	// TODO: eliminate the const_cast
 	if (!const_cast<ProxyDatabase *>(this)->EnsureConnected(error))
-		return nullptr;
+		return false;
 
 	if (!visit_directory && !visit_playlist && selection.recursive &&
 	    (ServerSupportsSearchBase(connection)
@@ -617,7 +617,7 @@ ProxyDatabase::VisitUniqueTags(const DatabaseSelection &selection,
 {
 	// TODO: eliminate the const_cast
 	if (!const_cast<ProxyDatabase *>(this)->EnsureConnected(error))
-		return nullptr;
+		return false;
 
 	enum mpd_tag_type tag_type2 = Convert(tag_type);
 	if (tag_type2 == MPD_TAG_COUNT) {
@@ -657,7 +657,7 @@ ProxyDatabase::GetStats(const DatabaseSelection &selection,
 
 	// TODO: eliminate the const_cast
 	if (!const_cast<ProxyDatabase *>(this)->EnsureConnected(error))
-		return nullptr;
+		return false;
 
 	struct mpd_stats *stats2 =
 		mpd_run_stats(connection);

src/db/SimpleDatabasePlugin.hxx

@@ -61,7 +61,7 @@ public:
 
 	virtual Song *GetSong(const char *uri_utf8,
 			      Error &error) const override;
-	virtual void ReturnSong(Song *song) const;
+	void ReturnSong(Song *song) const override;
 
 	virtual bool Visit(const DatabaseSelection &selection,
 			   VisitDirectory visit_directory,

src/decoder/FfmpegDecoderPlugin.cxx

@@ -284,10 +284,13 @@ ffmpeg_send_packet(Decoder &decoder, InputStream &is,
 		   AVFrame *frame,
 		   uint8_t **buffer, int *buffer_size)
 {
-	if (packet->pts >= 0 && packet->pts != (int64_t)AV_NOPTS_VALUE)
-		decoder_timestamp(decoder,
-				  time_from_ffmpeg(packet->pts - start_time_fallback(*stream),
-				  stream->time_base));
+	if (packet->pts >= 0 && packet->pts != (int64_t)AV_NOPTS_VALUE) {
+		auto start = start_time_fallback(*stream);
+		if (packet->pts >= start)
+			decoder_timestamp(decoder,
+					  time_from_ffmpeg(packet->pts - start,
+							   stream->time_base));
+	}
 
 	AVPacket packet2 = *packet;
 

src/filter/ChainFilterPlugin.cxx

@@ -52,10 +52,11 @@ public:
 		children.emplace_back(name, filter);
 	}
 
-	virtual AudioFormat Open(AudioFormat &af, Error &error) override;
-	virtual void Close();
-	virtual const void *FilterPCM(const void *src, size_t src_size,
-				      size_t *dest_size_r, Error &error);
+	/* virtual methods from class Filter */
+	AudioFormat Open(AudioFormat &af, Error &error) override;
+	void Close() override;
+	const void *FilterPCM(const void *src, size_t src_size,
+			      size_t *dest_size_r, Error &error) override;
 
 private:
 	/**

src/filter/NormalizeFilterPlugin.cxx

@@ -34,10 +34,11 @@ class NormalizeFilter final : public Filter {
 	PcmBuffer buffer;
 
 public:
-	virtual AudioFormat Open(AudioFormat &af, Error &error) override;
-	virtual void Close();
-	virtual const void *FilterPCM(const void *src, size_t src_size,
-				      size_t *dest_size_r, Error &error);
+	/* virtual methods from class Filter */
+	AudioFormat Open(AudioFormat &af, Error &error) override;
+	void Close() override;
+	const void *FilterPCM(const void *src, size_t src_size,
+			      size_t *dest_size_r, Error &error) override;
 };
 
 static Filter *

src/filter/ReplayGainFilterPlugin.cxx

@@ -116,10 +116,11 @@ public:
 	 */
 	void Update();
 
-	virtual AudioFormat Open(AudioFormat &af, Error &error) override;
-	virtual void Close();
-	virtual const void *FilterPCM(const void *src, size_t src_size,
-				      size_t *dest_size_r, Error &error);
+	/* virtual methods from class Filter */
+	AudioFormat Open(AudioFormat &af, Error &error) override;
+	void Close() override;
+	const void *FilterPCM(const void *src, size_t src_size,
+			      size_t *dest_size_r, Error &error) override;
 };
 
 void

src/filter/RouteFilterPlugin.cxx

@@ -120,10 +120,11 @@ public:
 	 */
 	bool Configure(const config_param &param, Error &error);
 
-	virtual AudioFormat Open(AudioFormat &af, Error &error) override;
-	virtual void Close();
-	virtual const void *FilterPCM(const void *src, size_t src_size,
-				      size_t *dest_size_r, Error &error);
+	/* virtual methods from class Filter */
+	AudioFormat Open(AudioFormat &af, Error &error) override;
+	void Close() override;
+	const void *FilterPCM(const void *src, size_t src_size,
+			      size_t *dest_size_r, Error &error) override;
 };
 
 bool

src/filter/VolumeFilterPlugin.cxx

@@ -57,10 +57,10 @@ public:
 		volume = _volume;
 	}
 
-	virtual AudioFormat Open(AudioFormat &af, Error &error) override;
-	virtual void Close();
-	virtual const void *FilterPCM(const void *src, size_t src_size,
-				      size_t *dest_size_r, Error &error);
+	AudioFormat Open(AudioFormat &af, Error &error) override;
+	void Close() override;
+	const void *FilterPCM(const void *src, size_t src_size,
+			      size_t *dest_size_r, Error &error) override;
 };
 
 static constexpr Domain volume_domain("pcm_volume");

src/fs/Charset.cxx

@@ -79,7 +79,10 @@ GetFSCharset()
 std::string
 PathToUTF8(const char *path_fs)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(path_fs != nullptr);
+#endif
 
 	if (fs_charset.empty())
 		return std::string(path_fs);
@@ -109,7 +112,10 @@ PathToUTF8(const char *path_fs)
 char *
 PathFromUTF8(const char *path_utf8)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(path_utf8 != nullptr);
+#endif
 
 	if (fs_charset.empty())
 		return g_strdup(path_utf8);

src/fs/Traits.cxx

@@ -25,7 +25,10 @@
 const char *
 PathTraits::GetBaseUTF8(const char *p)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(p != nullptr);
+#endif
 
 	const char *slash = strrchr(p, SEPARATOR_UTF8);
 	return slash != nullptr
@@ -36,7 +39,10 @@ PathTraits::GetBaseUTF8(const char *p)
 std::string
 PathTraits::GetParentUTF8(const char *p)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(p != nullptr);
+#endif
 
 	const char *slash = strrchr(p, SEPARATOR_UTF8);
 	return slash != nullptr

src/output/ShoutOutputPlugin.cxx

@@ -114,7 +114,7 @@ ShoutOutput::Configure(const config_param &param, Error &error)
 	if (!audio_format.IsFullyDefined()) {
 		error.Set(config_domain,
 			  "Need full audio format specification");
-		return nullptr;
+		return false;
 	}
 
 	const char *host = require_block_string(param, "host");

src/playlist/EmbeddedCuePlaylistPlugin.cxx

@@ -178,7 +178,7 @@ const struct playlist_plugin embcue_playlist_plugin = {
 	embcue_playlist_open_uri,
 	nullptr,
 
+	nullptr,
 	embcue_playlist_suffixes,
 	nullptr,
-	nullptr,
 };

src/tag/TagBuilder.cxx

@@ -77,7 +77,10 @@ TagBuilder::Commit()
 inline void
 TagBuilder::AddItemInternal(TagType type, const char *value, size_t length)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(value != nullptr);
+#endif
 	assert(length > 0);
 
 	char *p = FixTagString(value, length);
@@ -98,7 +101,10 @@ TagBuilder::AddItemInternal(TagType type, const char *value, size_t length)
 void
 TagBuilder::AddItem(TagType type, const char *value, size_t length)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(value != nullptr);
+#endif
 
 	if (length == 0 || ignore_tag_items[type])
 		return;
@@ -109,7 +115,10 @@ TagBuilder::AddItem(TagType type, const char *value, size_t length)
 void
 TagBuilder::AddItem(TagType type, const char *value)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(value != nullptr);
+#endif
 
 	AddItem(type, value, strlen(value));
 }

src/util/ASCII.hxx

@@ -43,24 +43,30 @@ gcc_pure gcc_nonnull_all
 static inline bool
 StringEqualsCaseASCII(const char *a, const char *b)
 {
-  assert(a != nullptr);
-  assert(b != nullptr);
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
+	assert(a != nullptr);
+	assert(b != nullptr);
+#endif
 
-  /* note: strcasecmp() depends on the locale, but for ASCII-only
-     strings, it's safe to use */
-  return strcasecmp(a, b) == 0;
+	/* note: strcasecmp() depends on the locale, but for ASCII-only
+	   strings, it's safe to use */
+	return strcasecmp(a, b) == 0;
 }
 
 gcc_pure gcc_nonnull_all
 static inline bool
 StringEqualsCaseASCII(const char *a, const char *b, size_t n)
 {
-  assert(a != nullptr);
-  assert(b != nullptr);
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
+	assert(a != nullptr);
+	assert(b != nullptr);
+#endif
 
-  /* note: strcasecmp() depends on the locale, but for ASCII-only
-     strings, it's safe to use */
-  return strncasecmp(a, b, n) == 0;
+	/* note: strcasecmp() depends on the locale, but for ASCII-only
+	   strings, it's safe to use */
+	return strncasecmp(a, b, n) == 0;
 }
 
 #endif

src/util/Manual.hxx

@@ -35,7 +35,7 @@
 #include <new>
 #include <utility>
 
-#if !defined(__clang__) && __GNUC__ && !GCC_CHECK_VERSION(4,8)
+#if GCC_OLDER_THAN(4,8)
 #include <type_traits>
 #endif
 
@@ -54,7 +54,7 @@
  */
 template<class T>
 class Manual {
-#if !defined(__clang__) && __GNUC__ && !GCC_CHECK_VERSION(4,8)
+#if GCC_OLDER_THAN(4,8)
 	/* no alignas() on gcc < 4.8: apply worst-case fallback */
 	__attribute__((aligned(8)))
 #else

src/util/UriUtil.cxx

@@ -128,8 +128,11 @@ uri_remove_auth(const char *uri)
 bool
 uri_is_child(const char *parent, const char *child)
 {
+#if !CLANG_CHECK_VERSION(3,6)
+	/* disabled on clang due to -Wtautological-pointer-compare */
 	assert(parent != nullptr);
 	assert(child != nullptr);
+#endif
 
 	const size_t parent_length = strlen(parent);
 	return memcmp(parent, child, parent_length) == 0 &&