Calling ios_kill() may cause a crash about ios_system HOT 8 CLOSED

After looking up some information, I found that it is not safe to call signal handlers after dlclose().

from ios_system.

Yes, but ios_kill is called before pdftex is terminated, so it is called before dlclose().

Some function or command has registered a signal handler for SIGINT, with the pointer 0x13797563c. The question is who, and why was it not updated?

from ios_system.

I don't have a solution to the signal handle problem. But after reading the source code (line 2387) of texlive, I just found a way to kill the pdftex compilation process.
Get the pointer to the TeX interrupt with the following code.

void *handle = NULL; int *TeX_interrupt_Pointer = NULL; handle = dlopen(libraryName.UTF8String, RTLD_LAZY | RTLD_GLOBAL); TeX_interrupt_Pointer = dlsym(handle, "interrupt");

Then, in ios_kill(), only one line is needed:

*TeX_interrupt_Pointer = 1;

from ios_system.

That would be a very specific solution (it only works if the command running is pdftex).

The solution was to change the function called by SIGINT (catch_interrupt, in texmfmp.c) from a static function to a non-static function.

from ios_system.

It works fine! Thank you.

from ios_system.

Out of curiosity, are you using the patched source at https://github.com/holzschu/texlive-source?

from ios_system.

I use the source https://github.com/holzschu/lib-tex, and ios_system version which I used is 3.0.0.
The latest version of ios_system always calls a framework called pdftexA when I call pdftex for the second time, but I can't find the framework of pdftexA .

from ios_system.

lib-tex is an old repository (based on texlive-2019), you should use texlive-source: https://github.com/holzschu/texlive-source which is based on texlive-2022. Build instructions are the same.

You even have precompiled binaries here: https://github.com/holzschu/texlive-source/releases/tag/texlive-2022 but obviously they don't have the recent bug fix yet.

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