<div dir="ltr"><div><div><br clear="all"></div>This plain tex document demonstrates \pdflastmatch failing if used after<br></div>a \pdfmatch that returned no matches.<br><div><div><br><pre class="">\pdfmatch{a}{b}
\pdflastmatch0
\bye</pre><br></div><div>segfaults (for me on cygwin tl2016 pretest) and originally reported by Henri Menke in stackexchange chat on Debian linux TL 2015.<br><br></div><div>he commented<br><br>> Ohhhh. Could also be a <code>libc</code> bug. Because it works in GDB.<br></div><div><br></div><div>David<br><br></div><div><br><br></div></div></div>