pointer post-incr problem with GCC 3.3.3 ??

[Andreas Schwab]

Falk Hueffner <hueffner@informatik.uni-tuebingen.de> writes:

> Graham Stott <graham.stott@btinternet.com> writes:
>
>>>           *(ptr++) = toupper(*ptr);
>>> 
>>>   I would assert these two code frags are functionally identical.
>>>
>> Nope your assertion is wrong.
>>
>> Read up on "sequence points" and you'll undersrand why. 
>
> I don't see this. Can you please explain in detail where the violation
> is?

Order of evaluation of operator arguments is unspecified, as well as the
exact point (before the next sequence point) when side effects take place.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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