[kaffe] memory leaking
greg at wooledge.org
Wed Jun 11 07:06:02 PDT 2003
Martin Pohlack (mp26 at os.inf.tu-dresden.de) wrote:
> In my recent attempt to build kaffe with the "diet libc" I noticed some
> #warnings, given by "diet libc":
> ../kaffevm/.libs/libkaffevm.a(syscalls.o)(.text+0x4e8): In function
> warning: gethostbyaddr() leaks memory. Use gethostbyaddr_r instead!
> ../kaffevm/.libs/libkaffevm.a(syscalls.o)(.text+0x493): In function
> warning: gethostbyname() leaks memory. Use gethostbyname_r instead!
Maybe diet libc's implementation does. In OpenBSD and most other Unix
systems, gethostbyname() uses a static buffer which is returned (or a
pointer to which is returned) every time. This means it's not safe to
use in multi-threaded apps. Kaffe's aware of this, as you can see by
the comments, so they lock the whole thing while it's doing a name
OpenBSD doesn't have the *_r versions.
Greg Wooledge | "Truth belongs to everybody."
greg at wooledge.org | - The Red Hot Chili Peppers
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