This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug bootstrap/64256] [5.0 Regression] Pointer Bounds Checker builtins enum overflows stabstring length
- From: "zoltan at hidvegi dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 05 Feb 2015 04:39:21 +0000
- Subject: [Bug bootstrap/64256] [5.0 Regression] Pointer Bounds Checker builtins enum overflows stabstring length
- Auto-submitted: auto-generated
- References: <bug-64256-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64256
--- Comment #9 from Zoltan Hidvegi <zoltan at hidvegi dot com> ---
xlC generates stubs with continuation, and it seems to cut them at 16k both for
32-bit and 64-bit objects, so maybe gcc could do the same. gdb-7.7.1 seems to
segfault on stubs longer than 32k for 32-bit executables, although long stubs
work with 64-bit executables. My brief testing showed that it indeed handles
continuations as long as all parts are under 32k. There is also totalview, I
haven't tried that. Other debuggers on AIX often have trouble dealing with the
debug info of g++.
But regardless of debugger support, there is really no alternative to using
continuation for XCOFF32. And as others have said this bug has been in gcc for
a long time, and has been brought up by several bugreports, e.g. also in
PR46072