43315 - AIX xlC 5.0 compiler issue: access of protected structs

Status: RESOLVED FIXED

(SeaMonkey :: Build Config, defect, P3)

Description

[Jim Dunn]

The AIX compiler is having problems with code of the form:

class A {
  protected:
    struct Impl {
      int a;
    }
};
class B : public A {
  protected
    char list[sizeof(Impl)];
}

giving an error of:
"protected.cpp", line 15.15: 1540-0301 (S) The "protected" member "struct
A::Impl" cannot be accessed

If you make the declaration of struct Impl public everything is fine.
declaring struct Impl friend on the otherhand does NOTHING!

Comment 1

[Jim Dunn]

Chris, the reason I copied you is because you added this code.
I think it is fine, but I figured I would copy you to let you
know the issue. 

Basically this is a compiler bug and I am hoping to get IBM to
fix it, but I needed to log it.  So no action is required on your part

Comment 2

[Jim Dunn]

Attachment: testcase: to compile xlC_r -c protected.cpp

Comment 3

[Jim Dunn]

adding mkaply at IBM since the OS/2 5.0 compiler will likely have
similar issues.

btw the code that this breaks in as at
line 69 of xpcom/ds/nsVoidArray.h

Comment 4

[Bill Buros]

Reproduced and sent to IBM compiler team.

Comment 5

[Bill Buros]

For my tracking purposes: IBM PMR #79943 -519-000

Comment 6

[Bill Buros]

Defect #160227

Comment 7

[Jeff George]

This problem has been addressed by the VisualAge C++ compiler team. They
have fixed the problem in their development branch and will provide an
efix for this problem. However, they are hoping to address all three
compiler issues we have seen in Mozilla (43306, 43311, 43315) with one
efix. This seems to be a logical approach.

I have been told that the schedule for an efix (at least for 43315) may be
forthcoming as soon as Monday, November 6. I will update this bug with
pertinent information as it becomes available.

Comment 8

[Jim Dunn]

This has been fixed with the Feb updated to xlC/vacpp 5.0.x.
Closing