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[Bug binutils/27231] objdump -S doesn't work on DWARF5 generated by GCC


From: hjl.tools at gmail dot com
Subject: [Bug binutils/27231] objdump -S doesn't work on DWARF5 generated by GCC 11
Date: Sun, 24 Jan 2021 03:48:37 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=27231

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at redhat dot com

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
GCC 11 also generates:

    00000176 0000000000002097 (base address)
    0000017f 0000000000002097 00000000000020f8 
    00000182 000000000000213d 000000000000213d (start == end)
    00000187 000000000000233f 0000000000002346 
    0000018c <End of list>

.LLRL171:
        .byte   0x5   
        .quad   .LBB2156
        .byte   0x4   
        .uleb128 .LBB2156-.LBB2156
        .uleb128 .LBE2156-.LBB2156
        .byte   0x4
        .uleb128 .LBB2157-.LBB2156
        .uleb128 .LBE2157-.LBB2156
        .byte   0x4
        .uleb128 .LBB2158-.LBB2156
        .uleb128 .LBE2158-.LBB2156
        .byte   0

This triggers:

      if ((low_pc == 0 && high_pc == 0) || low_pc == high_pc)
        return FALSE;

in read_rnglists().  Is this a GCC 11 bug?

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