[llvm-bugs] [Bug 41293] New: Cannot run llvm-objcopy on stripped ELF

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=41293

            Bug ID: 41293
           Summary: Cannot run llvm-objcopy on stripped ELF
           Product: tools
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: llvm-objcopy/strip
          Assignee: unassignedbugs at nondot.org
          Reporter: jh7370.2008 at my.bristol.ac.uk
                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

If --strip-sections is run on an ELF object, it strips the section headers, and
updates the ELF header accordingly. However, if you attempt to run llvm-objcopy
again on the same executable, you get the following error message:
c:\llvm\build\debug\bin\llvm-objcopy.exe: error: e_shstrndx field value 0 in
elf header  is invalid.

(Note also the extra space in the error message...)
The builder doesn't handle executables without a section header string table,
so we need to add support for this case.

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