History: Exceptions In C Plus Plus

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Why we don't use exceptions in our code

As told by Mike Shaver to Dave Liebreich, 5-Dec-2005

some of the reasons exceptions are not used are:

  • problems with older compilers' implementation of exceptions. This reason will go away as we drop support for older compilers over time.
  • problems with exceptions that have to cross boundaries between C, C++, and/or XPCOM.
  • lots of the existing code is not exception-safe.

C++ templates are slowly being adopted, so it's not like we never use different stuff.