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[Bug ld/596] New: non-dynamic global symbols in .dynstr and .hash sectio

From: angela at releasedominatrix dot com
Subject: [Bug ld/596] New: non-dynamic global symbols in .dynstr and .hash sections
Date: 1 Dec 2004 20:22:25 -0000

When linking against a dynamic library, the non-dynamic global symbols are also 
put in the .dynstr and .hash sections.  Here's a simple test case.

#include <stdio.h>

void nondyn1(void);


  printf("This is non-dynamic symbol 1.\n");
% mips-unknown-linux-gnu-gcc -o tst.x tst.c
% mips-unknown-linux-gnu-objdump -s -j .dynstr tst.x

tst.x:     file format elf32-tradbigmips

Contents of section .dynstr:
 400398 005f696e 6974005f 66696e69 005f5f6c  ._init._fini.__l
 4003a8 6962635f 73746172 745f6d61 696e005f  ibc_start_main._
 4003b8 5f676d6f 6e5f7374 6172745f 5f005f5f  _gmon_start__.__
 4003c8 64657265 67697374 65725f66 72616d65  deregister_frame
 4003d8 5f696e66 6f005f5f 72656769 73746572  _info.__register
 4003e8 5f667261 6d655f69 6e666f00 5f4a765f  _frame_info._Jv_
 4003f8 52656769 73746572 436c6173 73657300  RegisterClasses.
 400408 6e6f6e64 796e3100 7072696e 7466005f  nondyn1.printf._
 400418 44594e41 4d49435f 4c494e4b 494e4700  DYNAMIC_LINKING.
 400428 5f5f524c 445f4d41 50006c69 62632e73  __RLD_MAP.libc.s
 400438 6f2e3600 5f67705f 64697370 005f494f  o.6._gp_disp._IO
 400448 5f737464 696e5f75 73656400 474c4942  _stdin_used.GLIB
 400458 435f322e 3000                        C_2.0.          

In our very large C++ application, this increases the size of the binary by 
(25.5M vs 30M).  This problem existed in previous binutils releases as well at 
least as far back as 2.12.  I'm currently using 2.15.

           Summary: non-dynamic global symbols in .dynstr and .hash sections
           Product: binutils
           Version: 2.15
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: angela at releasedominatrix dot com
                CC: bug-binutils at gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: mips-unknown-linux-gnu


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