C array initialization.

Posted by chrisdew on Stack Overflow See other posts from Stack Overflow or by chrisdew
Published on 2010-05-06T14:32:04Z Indexed on 2010/05/06 14:48 UTC
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c

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array

Why does

static char *opcode_str[] = { "DATA"
                            , "DATA_REQUEST_ACK"
                            , "ACK_TIMER_EXPIRED"
                            , "ACK_UNEXPECTED_SEQ"
                            , "ACK_AS_REQUESTED"
                            } ;

work, but

static char **opcode_str = { "DATA"
                           , "DATA_REQUEST_ACK"
                           , "ACK_TIMER_EXPIRED"
                           , "ACK_UNEXPECTED_SEQ"
                           , "ACK_AS_REQUESTED"
                           } ;

fails with SEGV when opcode_str[0] is printf'd?

I think it's because the second listing has not allocated memory for the five element array of pointers, but I need a more comprehensive explanation.

All the best,

Chris.

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Developer IT

C array initialization. - Developer IT

C array initialization.

c

array

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