Hi, yes this seems to be the right cause of the bug. I was silent because I cannot reproduce the bug with the test file sent by Werner. The previous case seems irrelevant, as font_used[f] is already checked inside pdf_begin_string, ie whenever non-virtual char is written out. Regards, Thanh On Thu, Nov 16, 2006 at 10:38:13AM +0100, Taco Hoekwater wrote:

I think I have found it from checking up your hint about font_used[] in the debugger:

The arrays vf_i_fnts[] and vf_e_fnts[] are alloc as size font_max, but their indexes can easily overflow that because a vf font can contain more than one base font.

I've added two cases of

if vf_nf>font_max then overflow("virtual fonts",font_max);

right after the two occurrences of increments of vf_nf in pdftex.web, and now I get:

! TeX capacity exceeded, sorry [virtual fonts=2000].

Cheers, Taco

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