c++/1790: g++ does not compile 64Bit integer features

[davidf at etec dot com]

>Number:         1790
>Category:       c++
>Synopsis:       g++ does not compile 64Bit integer features
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jan 26 15:36:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     davidf@etec.com
>Release:        gcc 2.95
>Organization:
>Environment:
Yellow Dog Linux, fresh install
>Description:
 I have a simple example that breaks the compiler. First of all the gcc will compile the code (below), but g++ will not.

 I have tried many permutations. But I cannot use 64bit integers.

----------- code snippet  ------------------------
#include <stdint.h>

/* Cannot use INT64_MIN or INT64_MAX as these
   are undefined when the g++ compiler is run. Even
   thought its clear it should be defined if __cplusplus
   is defined (see stdint.h). Which it seems to be at
   compiler initialization. Go figure?
*/
int main()
{

  int64_t   test;

  test = -(9223372036854775807)-1;
  test = 9223372036854775807;

  return 0;
}
------------------------------------------------------

Gives error that value will not fit in test.

If test were 64bit then it would be ok. But it seems to make test a 32bit integer.
>How-To-Repeat:
Under YellowDogLinux, with the above code snippet named junk.c, it will work. But name it junk.cpp or compile it under g++ and it will fail.
>Fix:
No workaround found yet.
>Release-Note:
>Audit-Trail:
>Unformatted: