How to force gcc to dump core on FP error

raynor@cs.scarolina.edu (Harold Brian Raynor)
Sat, 24 Apr 1993 17:27:16 GMT

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How to force gcc to dump core on FP error raynor@cs.scarolina.edu (1993-04-24)
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Newsgroups: comp.compilers,comp.unix.ultrix
From: raynor@cs.scarolina.edu (Harold Brian Raynor)
Summary: How can I make GCC coredump on FP error
Keywords: GCC, debug, question
Organization: USC Department of Computer Science
Date: Sat, 24 Apr 1993 17:27:16 GMT

Is there any compiler switch that will force either GCC or the MIPS C
compiler (supplied with Ultrix) to coredump when a floating point error
occurs?


I am writing a 3D Graphics package and at the moment am having a lot of
things calculated to be Infinity or Nan. This should never happen in the
program.


Without dissecting every line of code with a debugger (or putting a TON of
printfs), it would be nice if I could just get a core dump whenever this
happened. Then I would know exactly where it occured. It does this with
integer divide by zeros, etc. There outta be a way to do it with FP (all
are floats, no doubles).


I am using a DECstation 2100 (believe it is MIPS 2000).


Any help would be greatly appreciated...


Thanks,
Brian Raynor
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