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Dereference null return value in gdtest.c 

Return value of function which returns null is dereferenced without checking at multiple places.
master
Jitendar Kumar 2015-06-03 16:41:48 +05:30
parent 7297c941ef
commit 7b6261c04f
1 changed files with 83 additions and 15 deletions
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98
src/gdtest.c
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@ -50,6 +50,14 @@ main (int argc, char **argv)
ref = gdImageCreateFromPng (in);
fclose (in);
if (!im) {
fprintf(stderr, "gdImageCreateFromPng failed.\n");
exit (1);
}
if (!ref) {
fprintf(stderr, "gdImageCreateFromPng failed.\n");
exit (1);
}
printf ("Reference File has %d Palette entries\n", ref->colorsTotal);
@ -65,6 +73,10 @@ main (int argc, char **argv)
sprintf (of, "%s.png", argv[1]);
#endif
out = fopen (of, "wb");
if (!out) {
fprintf(stderr, "PNG Output file does not exist!\n");
exit (1);
}
gdImagePng (im, out);
fclose (out);
@ -75,7 +87,12 @@ main (int argc, char **argv)
}
im2 = gdImageCreateFromPng (in);
fclose (in);
if (!im2) {
fprintf(stderr, "gdImageCreateFromPng failed.\n");
exit (1);
}
CompareImages ("GD->PNG File->GD", ref, im2);
unlink (of);
@ -85,6 +102,10 @@ main (int argc, char **argv)
iptr = gdImagePngPtr (im, &sz);
im2 = gdImageCreateFromPngPtr (sz, iptr);
gdFree (iptr);
if (!im2) {
fprintf(stderr, "gdImageCreateFromPngPtr failed.\n");
exit (1);
}
CompareImages ("GD->PNG ptr->GD", ref, im2);
gdImageDestroy (im2);
@ -98,6 +119,10 @@ main (int argc, char **argv)
sprintf (of, "%s.gd2", argv[1]);
#endif
out = fopen (of, "wb");
if (!out) {
fprintf(stderr, "GD2 Output file does not exist!\n");
exit (1);
}
gdImageGd2 (im, out, 128, 2);
fclose (out);
@ -108,7 +133,10 @@ main (int argc, char **argv)
}
im2 = gdImageCreateFromGd2 (in);
fclose (in);
if (!im2) {
fprintf(stderr, "gdImageCreateFromGd2 failed.\n");
exit (1);
}
CompareImages ("GD->GD2 File->GD", ref, im2);
unlink (of);
@ -119,7 +147,10 @@ main (int argc, char **argv)
im2 = gdImageCreateFromGd2Ptr (sz, iptr);
gdFree (iptr);
/*printf("Got img2 %d\n",im2); */
if (!im2) {
fprintf(stderr, "gdImageCreateFromGd2Ptr failed.\n");
exit (1);
}
CompareImages ("GD->GD2 ptr->GD", ref, im2);
gdImageDestroy (im2);
@ -133,6 +164,10 @@ main (int argc, char **argv)
sprintf (of, "%s.gd", argv[1]);
#endif
out = fopen (of, "wb");
if (!out) {
fprintf(stderr, "GD Output file does not exist!\n");
exit (1);
}
gdImageGd (im, out);
fclose (out);
@ -143,7 +178,10 @@ main (int argc, char **argv)
}
im2 = gdImageCreateFromGd (in);
fclose (in);
if (!im2) {
fprintf(stderr, "gdImageCreateFromGd failed.\n");
exit (1);
}
CompareImages ("GD->GD File->GD", ref, im2);
unlink (of);
@ -154,7 +192,11 @@ main (int argc, char **argv)
im2 = gdImageCreateFromGdPtr (sz, iptr);
gdFree (iptr);
/*printf("Got img2 %d\n",im2); */
if (!im2) {
fprintf(stderr, "gdImageCreateFromGdPtr failed.\n");
exit (1);
}
CompareImages ("GD->GD ptr->GD", ref, im2);
gdImageDestroy (im2);
@ -188,6 +230,11 @@ main (int argc, char **argv)
sprintf (of, "%s.snk", argv[1]);
#endif
out = fopen (of, "wb");
if (!out) {
fprintf (stderr,
"GD Sink: ERROR - GD Sink Output file does not exist!\n");
exit (1);
}
imgsnk.sink = fwriteWrapper;
imgsnk.context = out;
gdImagePngToSink (im, &imgsnk);
@ -199,7 +246,10 @@ main (int argc, char **argv)
} else {
im2 = gdImageCreateFromPng (in);
fclose (in);
if (!im2) {
fprintf(stderr, "gdImageCreateFromPng failed.\n");
exit (1);
}
CompareImages ("GD Sink", ref, im2);
gdImageDestroy (im2);
};
@ -216,7 +266,10 @@ main (int argc, char **argv)
}
im2 = gdImageCreateFromPng (in);
fclose (in);
if (!im2) {
fprintf(stderr, "gdImageCreateFromPng failed.\n");
exit (1);
}
in = fopen ("test/gdtest.gd2", "rb");
if (!in) {
@ -225,7 +278,10 @@ main (int argc, char **argv)
}
im3 = gdImageCreateFromGd2Part (in, 200, 300, 150, 100);
fclose (in);
if (!im3) {
fprintf(stderr, "gdImageCreateFromGd2Part failed.\n");
exit (1);
}
CompareImages ("GD2Part (gdtest_200_300_150_100.png, gdtest.gd2(part))",
im2, im3);
@ -242,8 +298,15 @@ main (int argc, char **argv)
}
im2 = gdImageCreateFromPng (in);
fclose (in);
if (!im2) {
fprintf(stderr, "gdImageCreateFromPng failed.\n");
exit (1);
}
im3 = gdImageCreate (100, 60);
if (!im3) {
fprintf(stderr, "gdImageCreate failed.\n");
exit (1);
}
colRed = gdImageColorAllocate (im3, 255, 0, 0);
colBlu = gdImageColorAllocate (im3, 0, 0, 255);
gdImageFilledRectangle (im3, 0, 0, 49, 30, colRed);
@ -264,7 +327,10 @@ main (int argc, char **argv)
}
im3 = gdImageCreateFromPng (in);
fclose (in);
if (!im3) {
fprintf(stderr, "gdImageCreateFromPng failed.\n");
exit (1);
}
printf ("[Merged Image has %d colours]\n", im2->colorsTotal);
CompareImages ("Merged (gdtest.png, gdtest_merge.png)", im2, im3);
@ -318,6 +384,11 @@ main (int argc, char **argv)
exit (1);
}
im2 = gdImageCreateFromWBMP (in);
fclose (in);
if (!im2) {
fprintf(stderr, "gdImageCreateFromWBMP failed.\n");
exit (1);
}
fprintf(stderr, "WBMP has %d colors\n", gdImageColorsTotal (im2));
fprintf(stderr, "WBMP colors are:\n");
for (i = 0; (i < gdImageColorsTotal (im2)); i++) {
@ -325,11 +396,8 @@ main (int argc, char **argv)
gdImageRed (im2, i),
gdImageGreen (im2, i), gdImageBlue (im2, i));
}
fclose (in);
if (!im2) {
fprintf(stderr, "gdImageCreateFromWBMP failed.\n");
exit (1);
}
CompareImages ("WBMP test (gdtest.png, gdtest.wbmp)", ref, im2);
out = fopen ("test/gdtest_wbmp_to_png.png", "wb");
if (!out) {