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Re: Feature, or bug? [message #80288 is a reply to message #80243]

Thu, 24 May 2012 05:45

Lajos Foldy
Messages: 176
Registered: December 2011

Senior Member

On Wednesday, May 23, 2012 9:32:06 PM UTC+2, whdaffer wrote:

>> Integer overflow is "undefined behaviour" in standard C, so it can not be done in a portable way. The glibc manual says:
>>
>> FPE_INTOVF_TRAP
>>
>> Integer overflow (impossible in a C program unless you enable overflow trapping in a hardware-specific fashion).
>
> Which, means, effectively, that check_math for integer overflow is
> worthless since I doubt that ITT or whatever they're called this week
> is going to enable overflow trapping in a hardware-specific fashion.
>
> Is the situation similar for the other errors?
>
> whd

Other errors are OK, floating point exception handling is standardized in C99.

Integer overflow may work on non-x86 architectures (SPARC today, Alpha, MIPS, ... for older IDL versions).

regards,
Lajos

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		Feature, or bug? By: whdaffer on Sat, 19 May 2012 12:20
		Re: Feature, or bug? By: Lajos Foldy on Thu, 24 May 2012 05:45

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