First: Under the current draft standard are all const object only given
an internal linkage, unless they have previously been given external
linkage?  I ask because I understood this was the case.  But, GNU G++
(at least 2.7.0) doesn't strictly follow this.  For example,

const char *messages[]={"Fun", "Stuff};
const char fun[]="message";

messages is made external, and fun is internal.  This seems wrong to me,
both should be internal.

Second: By the current standard is the complex class a template?  I ask
because old versions of GNU g++ and libg++ has complex not as a
template, yet g++ 2.7.0 and libg++ 2.7.0 make it a template.

Thanks,
matt



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In article 4kTmzbC00iVD0Bmn4x@andrew.cmu.edu, Mathew G Monroe <mmex+@andrew.cmu.edu> writes:
>
>First: Under the current draft standard are all const object only given
>an internal linkage, unless they have previously been given external
>linkage?  I ask because I understood this was the case.

Yes.

> But, GNU G++
>(at least 2.7.0) doesn't strictly follow this.  For example,
>
>const char *messages[]={"Fun", "Stuff};
>const char fun[]="message";
>
>messages is made external, and fun is internal.  This seems wrong to me,
>both should be internal.

No, GNU is correct. "messages" is not const, so it is made external.
That is "messages" is a non-const pointer to a const char. On the
other hand, "fun" is a const array of chars.  The "const" applies to
the declarator which follows. In the first case, the declator is "*"
and in the second case it is "fun". Pointers and arrays are not
the same thing.


>
>Second: By the current standard is the complex class a template?  I ask
>because old versions of GNU g++ and libg++ has complex not as a
>template, yet g++ 2.7.0 and libg++ 2.7.0 make it a template.

Yes, the current draft makes complex a template. The exact spelling
of the names and whether the spelling "complex" should be a typedef
to something like basic_complex<double> instead of the name of a
template was still under discussion the last time I checked.

---
Steve Clamage, stephen.clamage@eng.sun.com




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