Re: ld spurious warning?

[Alan Modra]

On Sun, Feb 12, 2017 at 02:08:30AM +0000, Peter Johnson wrote:
> https://coldplace.net/basm.o

How was this file made?  It has an invalid symbol table.

  [ 3] .symtab           SYMTAB          0000000000000000 0001f0 0000a8 18      
4   6  8

sh_info above says the first global symbol is at index 6.

Symbol table '.symtab' contains 7 entries:
   Num:    Value          Size Type    Bind   Vis      Ndx Name
     0: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT  UND 
     1: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS file.asm
     2: 0000000000000000     0 SECTION LOCAL  DEFAULT    1 
     3: 0000000000000000     0 SECTION LOCAL  DEFAULT    2 
     4: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT    1 message
     5: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT    2 _start
     6: 000000000000000a     0 NOTYPE  LOCAL  DEFAULT    2 bar

This shows a local after a global, which is invalid.  The sh_info
value also means ld only starts considering symbols as global at index
6.  So you have no global symbols as far as ld is concerned.

-- 
Alan Modra
Australia Development Lab, IBM