TryCatchC is a C module implementing the try/catch mechanism available in other programming languages but missing in C. It is based on the setjmp/longjmp functions. It supports recursive incursion of try/catch blocks, forward of uncaught exception to the upper level try/catch block if any, exception raised by signals like SIGSEV (non ANSI C feature), and user-defined exceptions.

• Download and add the files trycatch.c and trycatch.h to your project.
• Modify the list of predefined exceptions in enum TryCatchException in trycatch.h according to your needs, or create your own user-defined exceptions as explained in trycatch.h.
• Optionally add support for signals other than SIGSEV by referring to TryCatchInitHandlerSigSegv() and TryCatchSigSegvHandler().
• Use it in your project, for example as follows:

#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include "trycatch.h"
int main() {

  Try {

    if (isnan(0./0.)) Raise(TryCatchException_NaN);

  } Catch (TryCatchException_NaN) {

    printf("Caught exception NaN\n");

  } EndTry;

  return 0;
}

• Compile as follows:

	gcc -c main.c
	gcc -c trycatch.c
	gcc main.o trycatch.o -lm -o main

• Run with ./main. Output:

Caught exception NaN

More examples can be found in main.c of this repository.

TryCatchC, a C implementation of the try/catch mechanism in C Copyright (C) 2021 Pascal Baillehache

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.