[Bug gas/30277] New: GNU as produce '.symtab' entries with incorrect order for 32-bit MIPS target

[msl0000023508 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=30277

            Bug ID: 30277
           Summary: GNU as produce '.symtab' entries with incorrect order
                    for 32-bit MIPS target
           Product: binutils
           Version: 2.40
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: msl0000023508 at gmail dot com
  Target Milestone: ---

I have written a simple assembly code to test this issue:

$ cat sym-order-test.s
        .text
        .global func2, func4, func6
func1:
        nop
func2:
        nop
func3:
        nop
func4:
        nop
func5:
        nop
func6:
        nop
func7:
        nop
$ mips64-none-elfabi64-as -mabi=32 sym-order-test.s -o sym-order-test.o       
$ readelf --symbols sym-order-test.o                                            

Symbol table '.symtab' contains 15 entries:
   Num:    Value  Size Type    Bind   Vis      Ndx Name
     0: 00000000     0 NOTYPE  LOCAL  DEFAULT  UND 
     1: 00000000     0 SECTION LOCAL  DEFAULT    1 .text
     2: 00000000     0 SECTION LOCAL  DEFAULT    2 .data
     3: 00000000     0 SECTION LOCAL  DEFAULT    3 .bss
     4: 00000000     0 SECTION LOCAL  DEFAULT    4 .reginfo
     5: 00000000     0 SECTION LOCAL  DEFAULT    5 .MIPS.abiflags
     6: 00000000     0 SECTION LOCAL  DEFAULT    6 .pdr
     7: 00000000     0 SECTION LOCAL  DEFAULT    7 .gnu.attributes
     8: 00000004     0 NOTYPE  GLOBAL DEFAULT    1 func2
     9: 0000000c     0 NOTYPE  GLOBAL DEFAULT    1 func4
    10: 00000014     0 NOTYPE  GLOBAL DEFAULT    1 func6
    11: 00000000     0 NOTYPE  LOCAL  DEFAULT    1 func1
    12: 00000008     0 NOTYPE  LOCAL  DEFAULT    1 func3
    13: 00000010     0 NOTYPE  LOCAL  DEFAULT    1 func5
    14: 00000018     0 NOTYPE  LOCAL  DEFAULT    1 func7
$ mips64-none-elfabi64-as --version
GNU assembler (GNU Binutils) 2.40
Copyright (C) 2023 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or later.
This program has absolutely no warranty.
This assembler was configured for a target of `mips64-none-elfabi64'.


As shown by readelf(1), there are some LOCAL symbols follow the last GLOBAL
symbol, this is not allowed by ELF specification.

This issue was raised by ld(1), which rejects the problematical object file
under some conditions:

$ mips64-none-elfabi64-ld -m elf32btsmip sym-order-test.o
mips64-none-elfabi64-ld: sym-order-test.o: .symtab local symbol at index 11 (>=
sh_info of 8)
mips64-none-elfabi64-ld: sym-order-test.o: error adding symbols: bad value

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