Works when I use the logger in the code.

[wmjenkinson]

See the following code below, it was tested on another system previously but now fails if I take out a debug statement in Circle.

bool font_codec::ttf_load_glyf(Mount* file, ttf_t* ttf)
{
uint16_t i;
ttf_glyph_header_t gh;

if (ttf_seek_header(file, ttf->glyf))
	return true;

/* wchar_t support limited - only load the first ascii set*/
if(ttf->nglyphs > 256)
	ttf->nglyphs = 256;

ttf->glyph_data = (ttf_glyph_data_t *)malloc(sizeof(ttf_glyph_data_t) * ttf->nglyphs);

for (i = 0; i < ttf->nglyphs; i++) {
            
            /* FAILS AT 40!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
            if(i < 40)
	     CLogger::Get ()->Write ("from ttf", LogNotice, "glyph %i", i);

	size_t target;
	if (ttf->idx2loc[i] == ttf->idx2loc[i+1]) {
		ttf->glyph_data[i].npoints = 0;
		ttf->glyph_data[i].endpoints = nullptr;
		ttf->glyph_data[i].px = nullptr;
		ttf->glyph_data[i].ncontours = 0;
		ttf->glyph_data[i].py = nullptr;
		ttf->glyph_data[i].state = nullptr;
		ttf_set_ls_aw(ttf, &gh, &ttf->glyph_data[i], i);
		continue;
	}
	target = ttf->glyf->offset + ttf->idx2loc[i];
	file->exfat_seek(target, SEEK_SET);

	if (ttf_read_gh(file, &gh)) return true;
	if (ttf_read_glyph(ttf, file, &gh,
			&ttf->glyph_data[i],
			ttf->glyf, i)){

		return true;
	}
}

return false;

}

So when it gets to 40 if warns of a heapallocator error.

[rsta2]

What is the exact error message, that is shown from the heapallocator?

[wmjenkinson]

Hi rsta2, the error is as follows:
heapallocator.cpp(191): assertion failed: pBlockHeader->nMagic == HEAP_BLOCK_MAGIC

[rsta2]

This assertion fails, when a memory block is freed, and the block was not really allocated by the heap allocator (i.e. the handed over pointer is wrong), or the block header, which is placed in front of the block, has been overwritten by someone. In both cases head allocator is not responsible for the fault.

[wmjenkinson]

It worked on the RPI4.

[wmjenkinson]

Works on the RPI5 now, I just needed to use calloc instead of malloc.