Char array truncation

[mark3094]

Hi,

I have an array with scancodes in it. It is defined like this:

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ubyte keymap[128]

'ubyte' is just a typedef for 'unsigned char'
When I compile (VS 2010), I get this error:

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keymap.h(18): warning C4305: 'initializing' : truncation from 'int' to 'ubyte'

I'm reasonably sure this happens because there are escape codes, such as '\\' and '\'', and the compiler thinks I'm putting strings in the array.

It does work correctly, despite the warning. However, I would like a clean compile output. Is there a better way to do this, or is it best to just put up with the error?

[Love4Boobies]

Use uint8_t, don't typedef stuff like ubyte. As for the rest of your problem, http://www.catb.org/~esr/faqs/smart-questions.html (it describes precisely what you did wrong so don't get insulted and close the tab).

[mark3094]

As for the rest of your problem, http://www.catb.org/~esr/faqs/smart-questions.html (it describes precisely what you did wrong so don't get insulted and close the tab).

Had a look, but it wasn't very useful.

The solution to the problem was a simple typo. Took quite a bit of looking into and testing before I even noticed it.
I had something like this:

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arr[2] = {'8', '9', '10'}

Which of course caused the problem, as you can only have one character per array element. I thought the compiler may have been mistaking the escape codes (eg, '\\') as multiple character, but of course it wasn't.

I hope this can be useful in some way to someone else, if only as a reminder that typos are sneaky!

[Love4Boobies]

http://www.catb.org/~esr/faqs/smart-que ... l#symptoms and http://www.catb.org/~esr/faqs/smart-que ... l#id478549 were the most important. The question was hence unanswerable. Remember that and maybe next time you can be helped.