gcc-9-20200201 is now available

2020-02-01 Thread gccadmin 
Snapshot gcc-9-20200201 is now available on
  https://gcc.gnu.org/pub/gcc/snapshots/9-20200201/
and on various mirrors, see http://gcc.gnu.org/mirrors.html for details.

This snapshot has been generated from the GCC 9 git branch
with the following options: git://gcc.gnu.org/git/gcc.git branch releases/gcc-9 
revision bf4ee21e21be13928c5c492959183f7bb6560b1c

You'll find:

 gcc-9-20200201.tar.xzComplete GCC

  SHA256=d4601edbf12aa0dc6c641b4de88da05299f75b51203fc9319d7026ed3dab0a3a
  SHA1=97e1ebf6f38d2fcf06920170130f7502d3f1168d

Diffs from 9-20200125 are available in the diffs/ subdirectory.

When a particular snapshot is ready for public consumption the LATEST-9
link is updated and a message is sent to the gcc list.  Please do not use
a snapshot before it has been announced that way.

Feature request for "friendship" of pointers in "C"

2020-02-01 Thread aotto 

Hi, the following scenario has a "definition hole" in the "C" language

code example:

-
struct base {
  ...
};

struct A {
  struct base obj;
  ...
} aObj;

struct B {
  struct base obj;
  ...
} bObj;

void method_base (struct base * hdl, ...);

method_base(&aObj, ...)
method_base(&bObj, ...)


- a POINTER to "A" is also a valid POINTER to "base"

- a POINTER to "B" is also a valid POINTER to "base"

- a POINTER to "base" is NOT a valid POINTER to "A" and "B"

I require a solution for this problem WITHOUT forced pointer cast
code and without "void* and type-check" inflation.

The following solutions are acceptable:

1. "gcc" discover by its own that "base" is a "friend" of "A" and "B".
2. add a "frienddef" keyword like "typedef" using:
 typedef struct base * baseP;
     typedef struct A    * aP;
     typedef struct P    * bP;
 frienddef baseP aP;
 frienddef baseP bP;
3. add a #PRAGMA to enable/disable this feature
4. add a "gcc" api to easy extend "GCC" without being FORCED
   to "hack" the core.

thanks for your help