Tex capacity exceeded, sorry [input stack size = 5000]

Question

This is the error I am getting since I have added some new references to my .bib file. I think is more than a filled stack. Any ideas? references.bib

It was requested a minimum working example but I am working on a template and it was quite difficult for me cut it out. This is my complete structure. The master document is thesis.tex and the problem is raised only under related_work chapter. If you have the time to look at it, I would highly appreciate it. Here is the complete document.

Answer 1

It seems that the PhDbiblio-url2 bibliography style does not want the url field to contain \url{...}. It takes care of the url formating itself, enclosing the contents of the url field in \href{...}.

If you have something like

url = {\url{http://example.com/}};

in you .bib file, the PhDbiblio-url2 style translates that into

\href{\url{http://example.com/}}

which creates an infinite loop in the hyperref package.

The proper way to include url in the bibliography, when using this style, is just

url = {http://example.com};

Answer 2

Not a useful general answer, but a specific case in Beamer:

A \begin{block} statement (without a name option) will cause this error. The correct format is \begin{block}{Block title}, or \begin{block}{} if you want no title.

Answer 3

There's a config file where some numbers about "memory" TeX uses are written, I have it into /etc/texmf/texmf.cnf; you may need to change some value and regenerate formats.

stack_size = 5000        % simultaneous input sources

Add

Of course the problem may arise from a bug in TeX macros you're using, that consumes all the stack; so we need more information.

EDIT

If you want to edit that file, avoid editing /etc/texmf/texmf.cnf as always in configuration files. Instead edit the specific file in /etc/texmf/texmf.d/ - on Ubuntu currently /etc/texmf/texmf.d/95NonPath.cnf.

After editing the file you have to execute update-texmf to rewrite the configuration file.

EDIT2

Often it happens you can't have access to /etc or other system directories, so you need your own cnf file (and TeX tree). This link talks about it.

Answer 4

I found the solution: there was a conflict between hyperref and frenchle, so I got it fixed by replacing \usepackage{frenchle} by \usepackage[french]{babel}.

Answer 5

Another answer which only applies to Beamer:

Somehow beamer doesn't like the ' in formulas. That means if I write $t'$ I get the error, whereas $t^\prime$ works. I'm not sure if this only happens under certain conditions -- just mentioning it here since it's another possible source of this error.

Answer 6

I think the correct answer is to find an MWE.

In my case, the error message pointed to the \maketitle command, which was of no help. I found I could eliminate the entire body of the document and still got the error. I eventually traced the problem to the use of \thanks{} within \author{}, which is supported by article and several other document classes, but not acmart and amsart. The class documentation says to use \authornote{} instead, and outside \author{}.

Answer 7

For me, it works after I clear the cache in the overleaf.

Answer 8

In my case, the error was caused by typing documentclass[article] instead of documentclass{article}