RE: gdb 6.3 misses breakpoint on Linux when inferior does clone()

Satish Mohan
2005-05-26T20:02:39Z

-----Original Message-----
From: Daniel Jacobowitz [mailto:drow@false.org]
Sent: Thursday, May 26, 2005 12:44 PM
To: Satish Mohan
Cc: gdb@sources.redhat.com
Subject: Re: gdb 6.3 misses breakpoint on Linux when inferior does clone()

On Thu, May 26, 2005 at 12:40:39PM -0700, Satish Mohan wrote:
> Hi  If the inferior does a clone(...,CLONE_VM,...) on Linux, then gdb
> deletes breakpoints in the child which indirectly affects the parent
> because of CLONE_VM. The following sample code illustrates the
> problem:

The kernel does not provide any interface for GDB to know whether or
not a clone syscall has used CLONE_VM.

[Satish] Doesn't ptrace(PTRACE_GETREGS,...) provide that information ? Or is that arch. specific ?

Thx
--satish