(svn r15568) -Cleanup: *allocT/AllocaM doesn't return NULL when allocating fails

src/bmp.cpp

@@ -331,7 +331,6 @@ bool BmpReadHeader(BmpBuffer *buffer, BmpInfo *info, BmpData *data)
 		if (info->palette_size == 0) info->palette_size = 1 << info->bpp;
 
 		data->palette = CallocT<Colour>(info->palette_size);
-		if (data->palette == NULL) return false;
 
 		for (i = 0; i < info->palette_size; i++) {
 			data->palette[i].b = ReadByte(buffer);
@@ -353,7 +352,6 @@ bool BmpReadBitmap(BmpBuffer *buffer, BmpInfo *info, BmpData *data)
 	assert(info != NULL && data != NULL);
 
 	data->bitmap = CallocT<byte>(info->width * info->height * ((info->bpp == 24) ? 3 : 1));
-	if (data->bitmap == NULL) return false;
 
 	/* Load image */
 	SetStreamOffset(buffer, info->offset);

src/fileio.cpp

@@ -991,20 +991,17 @@ void SanitizeFilename(char *filename)
 
 void *ReadFileToMem(const char *filename, size_t *lenp, size_t maxsize)
 {
-	FILE *in;
+	FILE *in = fopen(filename, "rb");
-	byte *mem;
-	size_t len;
-
-	in = fopen(filename, "rb");
 	if (in == NULL) return NULL;
 
 	fseek(in, 0, SEEK_END);
-	len = ftell(in);
+	size_t len = ftell(in);
 	fseek(in, 0, SEEK_SET);
-	if (len > maxsize || (mem = MallocT<byte>(len + 1)) == NULL) {
+	if (len > maxsize) {
 		fclose(in);
 		return NULL;
 	}
+	byte *mem = MallocT<byte>(len + 1);
 	mem[len] = 0;
 	if (fread(mem, len, 1, in) != 1) {
 		fclose(in);

src/heightmap.cpp

@@ -137,14 +137,6 @@ static bool ReadHeightmapPNG(char *filename, uint *x, uint *y, byte **map)
 
 	if (map != NULL) {
 		*map = MallocT<byte>(info_ptr->width * info_ptr->height);
-
-		if (*map == NULL) {
-			ShowErrorMessage(STR_PNGMAP_ERR_MISC, STR_PNGMAP_ERROR, 0, 0);
-			fclose(fp);
-			png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
-			return false;
-		}
-
 		ReadHeightmapPNGImageData(*map, png_ptr, info_ptr);
 	}
 
@@ -253,15 +245,7 @@ static bool ReadHeightmapBMP(char *filename, uint *x, uint *y, byte **map)
 		}
 
 		*map = MallocT<byte>(info.width * info.height);
-		if (*map == NULL) {
-			ShowErrorMessage(STR_PNGMAP_ERR_MISC, STR_BMPMAP_ERROR, 0, 0);
-			fclose(f);
-			BmpDestroyData(&data);
-			return false;
-		}
-
 		ReadHeightmapBMPImageData(*map, &info, &data);
-
 	}
 
 	BmpDestroyData(&data);

src/map.cpp

@@ -52,11 +52,6 @@ void AllocateMap(uint size_x, uint size_y)
 	free(_m);
 	free(_me);
 
-	/* XXX @todo handle memory shortage more gracefully
-	 * CallocT does the out-of-memory check
-	 * Maybe some attemps could be made to try with smaller maps down to 64x64
-	 * Maybe check for available memory before doing the calls, after all, we know how big
-	 * the map is */
 	_m = CallocT<Tile>(_map_size);
 	_me = CallocT<TileExtended>(_map_size);
 }

src/newgrf_storage.h

@@ -75,8 +75,6 @@ struct PersistentStorageArray : BaseStorageArray {
 		/* We do not have made a backup; lets do so */
 		if (this->prev_storage != NULL) {
 			this->prev_storage = MallocT<TYPE>(SIZE);
-			if (this->prev_storage == NULL) return;
-
 			memcpy(this->prev_storage, this->storage, sizeof(this->storage));
 
 			/* We only need to register ourselves when we made the backup

src/queue.cpp

@@ -34,7 +34,6 @@ static bool InsSort_Push(Queue *q, void *item, int priority)
 {
 	InsSortNode *newnode = MallocT<InsSortNode>(1);
 
-	if (newnode == NULL) return false;
 	newnode->item = item;
 	newnode->priority = priority;
 	if (q->data.inssort.first == NULL ||

src/screenshot.cpp

@@ -127,10 +127,6 @@ static bool MakeBmpImage(const char *name, ScreenshotCallback *callb, void *user
 
 	/* now generate the bitmap bits */
 	void *buff = MallocT<uint8>(padw * maxlines * bpp); // by default generate 128 lines at a time.
-	if (buff == NULL) {
-		fclose(f);
-		return false;
-	}
 	memset(buff, 0, padw * maxlines); // zero the buffer to have the padding bytes set to 0
 
 	/* start at the bottom, since bitmaps are stored bottom up. */
@@ -255,11 +251,6 @@ static bool MakePNGImage(const char *name, ScreenshotCallback *callb, void *user
 
 	/* now generate the bitmap bits */
 	void *buff = MallocT<uint8>(w * maxlines * bpp); // by default generate 128 lines at a time.
-	if (buff == NULL) {
-		png_destroy_write_struct(&png_ptr, &info_ptr);
-		fclose(f);
-		return false;
-	}
 	memset(buff, 0, w * maxlines * bpp);
 
 	y = 0;
@@ -355,10 +346,6 @@ static bool MakePCXImage(const char *name, ScreenshotCallback *callb, void *user
 
 	/* now generate the bitmap bits */
 	uint8 *buff = MallocT<uint8>(w * maxlines); // by default generate 128 lines at a time.
-	if (buff == NULL) {
-		fclose(f);
-		return false;
-	}
 	memset(buff, 0, w * maxlines); // zero the buffer to have the padding bytes set to 0
 
 	y = 0;

src/sound.cpp

@@ -111,7 +111,6 @@ static bool SetBankSource(MixerChannel *mc, const FileEntry *fe)
 	if (fe->file_size == 0) return false;
 
 	int8 *mem = MallocT<int8>(fe->file_size);
-	if (mem == NULL) return false;
 
 	FioSeekToFile(fe->file_slot, fe->file_offset);
 	FioReadBlock(mem, fe->file_size);

src/sound/win32_s.cpp

@@ -22,8 +22,7 @@ static void PrepareHeader(WAVEHDR *hdr)
 	hdr->dwBufferLength = _bufsize * 4;
 	hdr->dwFlags = 0;
 	hdr->lpData = MallocT<char>(_bufsize * 4);
-	if (hdr->lpData == NULL ||
+	if (waveOutPrepareHeader(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
-			waveOutPrepareHeader(_waveout, hdr, sizeof(WAVEHDR)) != MMSYSERR_NOERROR)
 		usererror("waveOutPrepareHeader failed");
 }
 

src/tgp.cpp

@@ -253,7 +253,6 @@ static inline bool AllocHeightMap()
 	_height_map.total_size = (_height_map.size_x + 1) * (_height_map.size_y + 1);
 	_height_map.dim_x = _height_map.size_x + 1;
 	_height_map.h = CallocT<height_t>(_height_map.total_size);
-	if (_height_map.h == NULL) return false;
 
 	/* Iterate through height map initialize values */
 	FOR_ALL_TILES_IN_HEIGHT(h) *h = _invalid_height;