libgd/tests/png/bug00381_1.c

32 lines
606 B
C

/**
* Test that failure to convert to PNG returns NULL
*
* We are creating a palette image without allocating any colors in the palette,
* and pass this image to `gdImagePngPtr()` which is supposed to fail, and as
* such should return NULL.
*
* See also <https://github.com/libgd/libgd/issues/381>
*/
#include "gd.h"
#include "gdtest.h"
int main()
{
gdImagePtr im;
void *data;
int size = 0;
im = gdImageCreate(100, 100);
gdTestAssert(im != NULL);
data = gdImagePngPtr(im, &size);
gdTestAssert(data == NULL);
gdImageDestroy(im);
return gdNumFailures();
}