[llvm-bugs] [Bug 42278] New: --strip-all-gnu creating invalid ELF files for files with more than SHN_LORESERVE sections

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=42278

            Bug ID: 42278
           Summary: --strip-all-gnu creating invalid ELF files for files
                    with more than SHN_LORESERVE sections
           Product: tools
           Version: trunk
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: llvm-objcopy/strip
          Assignee: unassignedbugs at nondot.org
          Reporter: alexbrachetmialot at gmail.com
                CC: alexander.v.shaposhnikov at gmail.com,
                    jake.h.ehrlich at gmail.com,
                    jh7370.2008 at my.bristol.ac.uk,
                    llvm-bugs at lists.llvm.org, rupprecht at google.com

I was playing with many-sections.o in test/tools/llvm-objcopy/ELF/Inputs and
when using --strip-all-gnu the output file is incorrect. 

$ llvm-objcopy --strip-all many-sections.o many-sections.llvm.o
$ llvm-readelf many-sections.llvm.o -S
<works>
$ llvm-objcopy --strip-all-gnu many-sections.o many-sections.gnu.o
$ llvm-readelf many-sections.gnu.o -S

error: 'many-sections.gnu.o': invalid sh_type

--strip-all-gnu works (by which I mean creates a file readable by llvm-readelf)
on other object files. The name of the test object is presumably the giveaway
here. I'm guessing it has something to do with having more sections than fit in
e_shnum? Seems strange to me, but I haven't looked too deeply into this yet.

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