[llvm-bugs] [Bug 28575] New: crash with --gc-sections

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=28575

            Bug ID: 28575
           Summary: crash with --gc-sections
           Product: lld
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: ELF
          Assignee: unassignedbugs at nondot.org
          Reporter: rafael.espindola at gmail.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

lld crashes trying to link the following test when --gc-sections is used

    .globl    _start
_start:
    .cfi_startproc
    .cfi_personality 3, foobar
    .cfi_endproc
        .section .foobar,"ax"
foobar:

The problem is that we fail to mark .foobar live. When looking at .eh_frame
section we don't want to mark live the section whose address range is being
described, but we do have to mark like sections that are used for the exception
handling personality of any cie we keep.

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