Created attachment 156881 [details]
C++ test case

With the attached test case, I get the following compiler errors if I try to call ptrace(PTRACE_GETREGS) from C++. This seems like something that should work out of the box, without needing a cast or a -fpermissive.

$ g++ p.cc
p.cc: In function ‘void f()’:
p.cc:4:42: error: invalid conversion from ‘int’ to ‘__ptrace_request’ [-fpermissive]
 void f() { ptrace(PTRACE_GETREGS, 0, 0, 0); }
                                          ^
In file included from p.cc:1:0:
/usr/include/sys/ptrace.h:163:17: error:   initializing argument 1 of ‘long int ptrace(__ptrace_request, ...)’ [-fpermissive]
 extern long int ptrace (enum __ptrace_request __request, ...) __THROW;
                 ^
$ uname -a
Linux power8-fedora 3.14.17-100.fc19.ppc64p7 #1 SMP Sat Aug 23 04:01:55 UTC 2014 ppc64 ppc64 ppc64 GNU/Linux
$ cat /etc/fedora-release 
Fedora release 19 (Schrödinger’s Cat)

This seems like a problem with the kernel headers, but I'm not sure (maybe it's the C library's job to fix this up, or something...).