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From: "terrynini38514 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/100968] New: libiberty: stuck in infinite loop in nm-new
 while demangling rust symbols
Date: Tue, 08 Jun 2021 14:08:06 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100968

            Bug ID: 100968
           Summary: libiberty: stuck in infinite loop in nm-new while
                    demangling rust symbols
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: terrynini38514 at gmail dot com
  Target Milestone: ---

Created attachment 50964
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D50964&action=3Dedit
demangling POC

Sorry for didn't identify the actual version of libiberty, but this bug can=
 be
reproduce by clone the latest version (2.36.50) of binutils-gdb.

The POC cause nm-new stuck in infinite loop at rust-demangle.c:1024 and
rust-demangle.c:747 while using the nm-new with option -C, and there are mo=
re
similar case I found, I can attach them if needed. All of these cases just
stuck in a infinite loop in rust-demangle.c.

And I want to apply for CVE, if that requires me to do anything more, like
attach a valid patch or something ? Let me know, please.

Thanks.=