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* objcopy.c (filter_symbols): Explicitly stripping a symbol used in relocations is an error.

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Retype 'keep' to bfd_boolean.
* binutils-all/objcopy.exp: Add test for stripping a symbol used in a relocation.
* binutils-all/needed-by-reloc.s: New file.
This commit is contained in:
Nick Clifton 2007-04-24 10:56:58 +00:00
parent 98f17e6e1c
commit 312aaa3cfe
5 changed files with 68 additions and 11 deletions
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7
binutils/ChangeLog
View file

@ -1,3 +1,10 @@
2007-04-24 Nathan Froyd <froydnj@codesourcery.com>
Phil Edwards <phil@codesourcery.com>
* objcopy.c (filter_symbols): Explicitly stripping a symbol
used in relocations is an error.
Retype 'keep' to bfd_boolean.
2007-04-24 Alan Modra <amodra@bigpond.net.au>
* Makefile.in: Regenerate.

37
binutils/objcopy.c
View file

@ -917,7 +917,8 @@ filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms,
asymbol *sym = from[src_count];
flagword flags = sym->flags;
char *name = (char *) bfd_asymbol_name (sym);
int keep;
bfd_boolean keep;
bfd_boolean used_in_reloc = FALSE;
bfd_boolean undefined;
bfd_boolean rem_leading_char;
bfd_boolean add_leading_char;
@ -985,21 +986,24 @@ filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms,
}
if (strip_symbols == STRIP_ALL)
keep = 0;
keep = FALSE;
else if ((flags & BSF_KEEP) != 0 /* Used in relocation. */
|| ((flags & BSF_SECTION_SYM) != 0
&& ((*bfd_get_section (sym)->symbol_ptr_ptr)->flags
& BSF_KEEP) != 0))
keep = 1;
{
keep = TRUE;
used_in_reloc = TRUE;
}
else if (relocatable /* Relocatable file. */
&& (flags & (BSF_GLOBAL | BSF_WEAK)) != 0)
keep = 1;
keep = TRUE;
else if (bfd_decode_symclass (sym) == 'I')
/* Global symbols in $idata sections need to be retained
even if relocatable is FALSE. External users of the
library containing the $idata section may reference these
symbols. */
keep = 1;
keep = TRUE;
else if ((flags & BSF_GLOBAL) != 0 /* Global symbol. */
|| (flags & BSF_WEAK) != 0
|| undefined
@ -1012,7 +1016,7 @@ filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms,
else if (bfd_coff_get_comdat_section (abfd, bfd_get_section (sym)))
/* COMDAT sections store special information in local
symbols, so we cannot risk stripping any of them. */
keep = 1;
keep = TRUE;
else /* Local symbol. */
keep = (strip_symbols != STRIP_UNNEEDED
&& (discard_locals != LOCALS_ALL
@ -1020,17 +1024,30 @@ filter_symbols (bfd *abfd, bfd *obfd, asymbol **osyms,
|| ! bfd_is_local_label (abfd, sym))));
if (keep && is_specified_symbol (name, strip_specific_list))
keep = 0;
{
/* There are multiple ways to set 'keep' above, but if it
was the relocatable symbol case, then that's an error. */
if (used_in_reloc)
{
non_fatal (_("not stripping symbol `%s' because it is named in a relocation"), name);
status = 1;
}
else
keep = FALSE;
}
if (keep
&& !(flags & BSF_KEEP)
&& is_specified_symbol (name, strip_unneeded_list))
keep = 0;
keep = FALSE;
if (!keep
&& ((keep_file_symbols && (flags & BSF_FILE))
|| is_specified_symbol (name, keep_specific_list)))
keep = 1;
keep = TRUE;
if (keep && is_strip_section (abfd, bfd_get_section (sym)))
keep = 0;
keep = FALSE;
if (keep)
{

7
binutils/testsuite/ChangeLog
View file

@ -1,3 +1,10 @@
2007-04-24 Nathan Froyd <froydnj@codesourcery.com>
Phil Edwards <phil@codesourcery.com>
* binutils-all/objcopy.exp: Add test for stripping a symbol
used in a relocation.
* binutils-all/needed-by-reloc.s: New file.
2007-04-20 Nathan Froyd <froydnj@codesourcery.com>
Phil Edwards <phil@codesourcery.com>
Thomas de Lellis <tdel@windriver.com>

7
binutils/testsuite/binutils-all/needed-by-reloc.s Normal file
View file

@ -0,0 +1,7 @@
.globl foo
.data
.4byte foo
.text
foo:
.long 1

21
binutils/testsuite/binutils-all/objcopy.exp
View file

@ -1,5 +1,5 @@
# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
# 2004, 2006
# 2004, 2006, 2007
# Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
@ -774,3 +774,22 @@ if [is_elf_format] {
run_dump_test "strip-3"
}
run_dump_test "localize-hidden-2"
if { [istarget "i*86-*"] || [istarget "x86_64-*-*"] } {
# Check to make sure we don't strip a symbol named in relocations.
set test "objcopy doesn't strip needed symbols"
set srcfile $srcdir/$subdir/needed-by-reloc.s
if {![binutils_assemble $srcfile tmpdir/bintest.o]} then {
unresolved $test
} else {
set got [binutils_run $OBJCOPY "$OBJCOPYFLAGS --strip-symbol=foo tmpdir/bintest.o ${copyfile}.o"]
if [regexp "not stripping symbol `foo' because it is named in a relocation" $got] {
pass $test
} else {
fail $test
}
}
}