On Wednesday, July 15, 2015 at 4:36:56 PM UTC-4, jean-pierre.muench wrote:
>
>  I'm fine with this as long as it doesn't change behavior on Windows / 
> Visual Studio, which normally catches asserts and uncatched exceptions by 
> default :)
>

Yes, it won't muck with Windows. Command line programs running outside a 
debugger will still crash, IIRC. (Microsoft recognized the problem, and 
fixed it under the IDE a long time ago).

Jeff
 

> Am 15.07.2015 um 22:27 schrieb Jeffrey Walton:
>  
> I'm catching an assert when running with -DDEBUG (i.e., not -DNDEBUG):
>
>     cryptest.exe: misc.h:703: T CryptoPP::rotlMod(T, unsigned int)
>         [with T = unsigned int]: Assertion `y <= 255' failed.
>
> The assert is fine. I adore asserts, because they create "self debugging 
> code". When the code tells me where the problem is, I don't have to spend 
> time under a debugger. In code under my purview in real life, we make debug 
> instrumentation a security gate because it so helpful. If code does not 
> have the instrumentation, it cannot be checked in.
>
> The issue I have is Posix's default behavior of "lets crash the program 
> while the developer is debugging it". Its completely useless behavior.
>
> I want to cut-in a CRYPTOPP_ASSERT. The CRYPTOPP_ASSERT will do everything 
> assert does, but it will raise a SIG_TRAP rather than SIG_ABRT. SIG_TRAP 
> will snap the debugger if present. If not present, you sometimes get a 
> message on the console. In both cases, the program continues.
>
> You can see an example of the improved assert at 
> https://code.google.com/p/owasp-esapi-cplusplus/source/browse/trunk/esapi/EsapiCommon.h
>  
> (line 183).
>
> Are there any comments or objections to cutting in a CRYPTOPP_ASSERT?
>
>

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