array initializers

[RezaRob]

[ Sorry for double posting to c++.moderated; I made a mistake. ]

I don't know if this is ANSI-C, but in gcc it works perfectly well:

static const char *opcodes[] = {
[3] = "bad_op"
};

However, in c++ it fails! What's the deal?

Thanks.

Reza.

 

[Ian Collins]

[ Sorry for double posting to c++.moderated; I made a mistake. ]

I don't know if this is ANSI-C, but in gcc it works perfectly well:

Not in conforming mode.

static const char *opcodes[] = {
[3] = "bad_op"
};

However, in c++ it fails! What's the deal?

It's a C99 extension that isn't part of the current C++ standard, which
predates C99.

 

[James Kanze]

I don't know if this is ANSI-C, but in gcc it works perfectly well:

static const char *opcodes[] = {
[3] = "bad_op"
};

However, in c++ it fails! What's the deal?

It's legal ISO C (according to ISO/IEC 9899::1999), but not
legal ISO C++ (according to ISO/IEC 14882:2003).

As far as I know, this part of C99 will not be adopted into the
next version of C++. (I don't know why. In the case of
structures, it's particularly useful, and generally speaking,
aggregate initialization in C++ is very strongly based on C.)