[Bug binutils/29860] New: [2.40 Regression] Can't convert from 64-bit ELF to 32-bit ELF with 32-bit objcopy

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29860

            Bug ID: 29860
           Summary: [2.40 Regression] Can't convert from 64-bit ELF to
                    32-bit ELF with 32-bit objcopy
           Product: binutils
           Version: 2.40 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
                CC: amodra at gmail dot com
  Target Milestone: ---

https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=7b5f66a118a6e252a56c472c082a29d39ede68c6

caused

/export/build/gnu/tools-build/binutils-x32/build-x86_64-linux-gnux32/gas/as-new
/export/gnu/import/git/sources/binutils-gdb/binutils/testsuite/binutils-all/dw2-3.S
--compress-debug-sections=zlib-gabi --64 -o tmpdir/dw2-3.o
/export/build/gnu/tools-build/binutils-x32/build-x86_64-linux-gnux32/binutils/objcopy
-O elf32-x86-64 tmpdir/dw2-3.o tmpdir/debug_str.copy.o
readelf -SW tmpdir/debug_str.copy.o
There are 13 section headers, starting at offset 0x2d4:

Section Headers:
  [Nr] Name              Type            Addr     Off    Size   ES Flg Lk Inf
Al
  [ 0] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [ 1] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [ 2] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [ 3] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [ 4] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [ 5] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [ 6] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [ 7] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [ 8] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [ 9] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [10] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [11] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
  [12] <no-strings>      NULL            00000000 000000 000000 00      0   0 
0
Key to Flags:
  W (write), A (alloc), X (execute), M (merge), S (strings), I (info),
  L (link order), O (extra OS processing required), G (group), T (TLS),
  C (compressed), x (unknown), o (OS specific), E (exclude),
  D (mbind), l (large), p (processor specific)

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