fix -Wunused-parameter

examples/gif.c

@@ -2,7 +2,7 @@
 #include <stdlib.h>
 #include <gd.h>
 
-int main(int argc, char ** argv)
+int main(void)
 {
 	int i;
 	FILE * out;

src/gd.c

@@ -1183,6 +1183,7 @@ BGD_DECLARE(int) gdImageGetTrueColorPixel (gdImagePtr im, int x, int y)
 BGD_DECLARE(void) gdImageAABlend (gdImagePtr im)
 {
   /* NO-OP, kept for library compatibility. */
+	(void)im;
 }
 
 static void gdImageAALine (gdImagePtr im, int x1, int y1, int x2, int y2, int col);

src/gd_jpeg.c

@@ -794,10 +794,7 @@ void skip_input_data(j_decompress_ptr cinfo, long num_bytes)
  */
 void term_source(j_decompress_ptr cinfo)
 {
-#if 0
-	/* never used */
-	my_src_ptr src = (my_src_ptr) cinfo->src;
-#endif
+	(void)cinfo;
 }
 
 

src/gd_png.c

@@ -95,6 +95,7 @@ gdPngWriteData (png_structp png_ptr, png_bytep data, png_size_t length)
 	static void
 gdPngFlushData (png_structp png_ptr)
 {
+	(void)png_ptr;
 }
 
 BGD_DECLARE(gdImagePtr) gdImageCreateFromPng (FILE * inFile)

src/gd_tiff.c

@@ -176,6 +176,7 @@ static toff_t tiff_seekproc(thandle_t clientdata, toff_t offset, int from)
 /* TIFFCloseProc tiff_closeproc - used to finally close the TIFF file */
 static int tiff_closeproc(thandle_t clientdata)
 {
+	(void)clientdata;
 	/*tiff_handle *th = (tiff_handle *)clientdata;
 	gdIOCtx *ctx = th->ctx;
 
@@ -194,13 +195,18 @@ static toff_t tiff_sizeproc(thandle_t clientdata)
 /* TIFFMapFileProc tiff_mapproc() */
 static int tiff_mapproc(thandle_t h, tdata_t *d, toff_t *o)
 {
+	(void)h;
+	(void)d;
+	(void)o;
 	return 0;
 }
 
 /* TIFFUnmapFileProc tiff_unmapproc */
 static void tiff_unmapproc(thandle_t h, tdata_t d, toff_t o)
 {
-
+	(void)h;
+	(void)d;
+	(void)o;
 }
 
 
@@ -495,6 +501,10 @@ static void readTiffBw (const unsigned char *src,
 	int src_x, src_y;
 	int k;
 
+	(void)has_alpha;
+	(void)extra;
+	(void)align;
+
 	for (src_y = 0; src_y < height; ++src_y) {
 		k = 0;
 		while (k < width) {
@@ -533,6 +543,9 @@ static void readTiff8bit (const unsigned char *src,
 	int    red, green, blue, alpha;
 	int    x, y;
 
+	(void)extra;
+	(void)align;
+
 	switch (photometric) {
 		case PHOTOMETRIC_PALETTE:
 			/* Palette has no alpha (see TIFF specs for more details */

src/gd_topal.c

@@ -359,6 +359,8 @@ prescan_quantize (j_decompress_ptr cinfo, JSAMPARRAY input_buf,
 #else
   int width = oim->sx;
   int num_rows = oim->sy;
+
+  (void)nim;
 #endif
 
   for (row = 0; row < num_rows; row++)
@@ -479,6 +481,10 @@ LOCAL (void)
   int c0min, c0max, c1min, c1max, c2min, c2max;
   INT32 dist0, dist1, dist2;
   long ccount;
+#ifndef ORIGINAL_LIB_JPEG
+  (void)oim;
+  (void)nim;
+#endif
 
   c0min = boxp->c0min;
   c0max = boxp->c0max;
@@ -727,6 +733,9 @@ LOCAL (void)
   long c0total = 0;
   long c1total = 0;
   long c2total = 0;
+#ifndef ORIGINAL_LIB_JPEG
+  (void)oim;
+#endif
 
   c0min = boxp->c0min;
   c0max = boxp->c0max;
@@ -954,6 +963,10 @@ find_nearby_colors (
   int i, x, ncolors;
   INT32 minmaxdist, min_dist, max_dist, tdist;
   INT32 mindist[MAXNUMCOLORS];	/* min distance to colormap entry i */
+#ifndef ORIGINAL_LIB_JPEG
+  (void)oim;
+  (void)cquantize;
+#endif
 
   /* Compute true coordinates of update box's upper corner and center.
    * Actually we compute the coordinates of the center of the upper-corner
@@ -1130,6 +1143,10 @@ LOCAL (void) find_best_colors (
   INT32 inc0, inc1, inc2;	/* initial values for increments */
   /* This array holds the distance to the nearest-so-far color for each cell */
   INT32 bestdist[BOX_C0_ELEMS * BOX_C1_ELEMS * BOX_C2_ELEMS];
+#ifndef ORIGINAL_LIB_JPEG
+  (void)oim;
+  (void)cquantize;
+#endif
 
   /* Initialize best-distance for each cell of the update box */
   bptr = bestdist;
@@ -1607,6 +1624,9 @@ init_error_limit (gdImagePtr oim, gdImagePtr nim, my_cquantize_ptr cquantize)
   table = (int *) (*cinfo->mem->alloc_small)
     ((j_common_ptr) cinfo, JPOOL_IMAGE, (MAXJSAMPLE * 2 + 1) * SIZEOF (int));
 #else
+  (void)oim;
+  (void)nim;
+
   cquantize->error_limiter_storage =
     (int *) gdMalloc ((MAXJSAMPLE * 2 + 1) * sizeof (int));
   if (!cquantize->error_limiter_storage)

src/gdft.c

@@ -559,6 +559,8 @@ tweenColorFetch (char **error, void *key)
   int pixel, npixel, bg, fg;
   gdImagePtr im;
 
+  (void)error;
+
   a = (tweencolor_t *) gdMalloc (sizeof (tweencolor_t));
 	if (!a) {
 		return NULL;

src/gdkanji.c

@@ -33,6 +33,8 @@ int iconv_close (iconv_t);
 iconv_t
 iconv_open (const char *tocode, const char *fromcode)
 {
+	(void)tocode;
+	(void)fromcode;
   return (iconv_t) (-1);
 }
 
@@ -40,12 +42,18 @@ size_t
 iconv (iconv_t cd, ICONV_CONST char **inbuf, size_t * inbytesleft,
        char **outbuf, size_t * outbytesleft)
 {
+	(void)cd;
+	(void)inbuf;
+	(void)inbytesleft;
+	(void)outbuf;
+	(void)outbytesleft;
   return 0;
 }
 
 int
 iconv_close (iconv_t cd)
 {
+	(void)cd;
   return 0;
 }
 
@@ -97,6 +105,8 @@ debug (const char *format, ...)
   vfprintf (stdout, format, args);
   fprintf (stdout, "\n");
   va_end (args);
+#else
+  (void)format;
 #endif
 }
 

src/gdxpm.c

@@ -19,6 +19,7 @@
 #ifndef HAVE_LIBXPM
 BGD_DECLARE(gdImagePtr) gdImageCreateFromXpm(char *filename)
 {
+	(void)filename;
 	fprintf(stderr, "libgd was not built with xpm support\n");
 	return NULL;
 }

tests/gdtest/gdtest.c

@@ -112,6 +112,8 @@ int gdTestImageCompareToImage(const char* file, int line, const char* message,
 	gdImagePtr surface_diff = NULL;
 	CuTestImageResult result = {0, 0};
 
+	(void)message;
+
 	if (!actual) {
 		fprintf(stderr, "Image is NULL\n");
 		goto fail;
@@ -210,6 +212,9 @@ int _gdTestErrorMsg(const char* file, int line, const char* format, ...) /* {{{
  va_list args;
  char *debug;
 
+ (void)file;
+ (void)line;
+
  va_start (args, format);
  vsnprintf (output_buf, sizeof (output_buf), format, args);
  va_end (args);

tests/png/bug00193.c

@@ -13,12 +13,15 @@ static gdImagePtr im;
 static void
 failPutC(gdIOCtxPtr ctx, int c)
 {
+	(void)c;
 	TERMINATE(ctx, 1);
 }
 
 static int
 failPutBuf(gdIOCtxPtr ctx, const void * data, int size)
 {
+	(void)data;
+	(void)size;
 	TERMINATE(ctx, 1);
 	return -1;
 }

tests/xpm/bug00166.c

@@ -5,7 +5,7 @@
 #include "gdtest.h"
 
 int
-main(int argc, char *argv[])
+main(void)
 {
   gdImagePtr im;
   char path[1024];

tests/xpm/color_name.c

@@ -5,7 +5,7 @@
 #include "gdtest.h"
 
 int
-main(int argc, char *argv[])
+main(void)
 {
   gdImagePtr im;
   char path[1024];