OpenE2K/binutils-gdb
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2009-06-05 Doug Kwan <dougkwan@google.com>

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* Makefile.am (CCFILES): Add target.cc.
	* Makefile.in: Regenerate.
	* i386.cc (class Target_i386): Define new virtual method to
	override do_is_local_label_name in parent.
	* object.cc (Sized_relobj::do_count_local_symbols): Discard
	local symbols if --discard-locals or -X is given.
	* options.h (class General_options): Declare new options
	'--discard-locals' and '-X' for discarding locals.
	* target.h (class Target): Define new methods is_local_label_name.
	Declare new virtual method do_is_local_label_name.
	* target.cc: New file.
	* testsuite/Makefile.am (check_PROGRAMS): Add discard_locals_test.
	(check_SCRIPTS): Add discard_locals_test.sh.
	(check_DATA): Add discard_local_tests.syms.
	(discard_locals_test_SOURCES, discard_locals_test_LDFLAGS): Define.
	(discard_local_tests.syms, discard_locals_test.o): New make rules.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/discard_locals_test.c: New file.
	* testsuite/discard_locals_test.sh: Same.
This commit is contained in:
Doug Kwan 2009-06-05 21:32:57 +00:00
parent da1f277114
commit bb04269c74
12 changed files with 267 additions and 13 deletions
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22
gold/ChangeLog
View File

@ -1,3 +1,25 @@
2009-06-05 Doug Kwan <dougkwan@google.com>
* Makefile.am (CCFILES): Add target.cc.
* Makefile.in: Regenerate.
* i386.cc (class Target_i386): Define new virtual method to
override do_is_local_label_name in parent.
* object.cc (Sized_relobj::do_count_local_symbols): Discard
local symbols if --discard-locals or -X is given.
* options.h (class General_options): Declare new options
'--discard-locals' and '-X' for discarding locals.
* target.h (class Target): Define new methods is_local_label_name.
Declare new virtual method do_is_local_label_name.
* target.cc: New file.
* testsuite/Makefile.am (check_PROGRAMS): Add discard_locals_test.
(check_SCRIPTS): Add discard_locals_test.sh.
(check_DATA): Add discard_local_tests.syms.
(discard_locals_test_SOURCES, discard_locals_test_LDFLAGS): Define.
(discard_local_tests.syms, discard_locals_test.o): New make rules.
* testsuite/Makefile.in: Regenerate.
* testsuite/discard_locals_test.c: New file.
* testsuite/discard_locals_test.sh: Same.
2009-06-05 Doug Kwan <dougkwan@google.com>
* object.cc (Sized_relobj::Sized_relobj): Initialize

1
gold/Makefile.am
View File

@ -68,6 +68,7 @@ CCFILES = \
script.cc \
stringpool.cc \
symtab.cc \
target.cc \
target-select.cc \
version.cc \
workqueue.cc \

7
gold/Makefile.in
View File

@ -87,8 +87,8 @@ am__objects_1 = archive.$(OBJEXT) binary.$(OBJEXT) common.$(OBJEXT) \
plugin.$(OBJEXT) readsyms.$(OBJEXT) \
reduced_debug_output.$(OBJEXT) reloc.$(OBJEXT) \
resolve.$(OBJEXT) script-sections.$(OBJEXT) script.$(OBJEXT) \
stringpool.$(OBJEXT) symtab.$(OBJEXT) target-select.$(OBJEXT) \
version.$(OBJEXT) workqueue.$(OBJEXT) \
stringpool.$(OBJEXT) symtab.$(OBJEXT) target.$(OBJEXT) \
target-select.$(OBJEXT) version.$(OBJEXT) workqueue.$(OBJEXT) \
workqueue-threads.$(OBJEXT)
am__objects_2 =
am__objects_3 = yyscript.$(OBJEXT)
@ -352,6 +352,7 @@ CCFILES = \
script.cc \
stringpool.cc \
symtab.cc \
target.cc \
target-select.cc \
version.cc \
workqueue.cc \
@ -542,6 +543,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/mremap.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/pread.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/archive.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/arm.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/binary.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/common.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/compressed_output.Po@am__quote@
@ -581,6 +583,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/stringpool.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/symtab.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/target-select.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/target.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/version.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/workqueue-threads.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/workqueue.Po@am__quote@

13
gold/i386.cc
View File

@ -155,6 +155,19 @@ class Target_i386 : public Target_freebsd<32, false>
do_is_defined_by_abi(const Symbol* sym) const
{ return strcmp(sym->name(), "___tls_get_addr") == 0; }
// Return whether a symbol name implies a local label. The UnixWare
// 2.1 cc generates temporary symbols that start with .X, so we
// recognize them here. FIXME: do other SVR4 compilers also use .X?.
// If so, we should move the .X recognition into
// Target::do_is_local_label_name.
bool
do_is_local_label_name(const char* name) const
{
if (name[0] == '.' && name[1] == 'X')
return true;
return Target::do_is_local_label_name(name);
}
// Return the size of the GOT section.
section_size_type
got_size()

24
gold/object.cc
View File

@ -1439,6 +1439,7 @@ Sized_relobj<size, big_endian>::do_count_local_symbols(Stringpool* pool,
unsigned int dyncount = 0;
// Skip the first, dummy, symbol.
psyms += sym_size;
bool discard_locals = parameters->options().discard_locals();
for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size)
{
elfcpp::Sym<size, big_endian> sym(psyms);
@ -1484,8 +1485,29 @@ Sized_relobj<size, big_endian>::do_count_local_symbols(Stringpool* pool,
continue;
}
// Add the symbol to the symbol table string pool.
// If --discard-locals option is used, discard all temporary local
// symbols. These symbols start with system-specific local label
// prefixes, typically .L for ELF system. We want to be compatible
// with GNU ld so here we essentially use the same check in
// bfd_is_local_label(). The code is different because we already
// know that:
//
// - the symbol is local and thus cannot have global or weak binding.
// - the symbol is not a section symbol.
// - the symbol has a name.
//
// We do not discard a symbol if it needs a dynamic symbol entry.
const char* name = pnames + sym.get_st_name();
if (discard_locals
&& sym.get_st_type() != elfcpp::STT_FILE
&& !lv.needs_output_dynsym_entry()
&& parameters->target().is_local_label_name(name))
{
lv.set_no_output_symtab_entry();
continue;
}
// Add the symbol to the symbol table string pool.
pool->add(name, true, NULL);
++count;

3
gold/options.h
View File

@ -645,6 +645,9 @@ class General_options
N_("Try to detect violations of the One Definition Rule"),
NULL);
DEFINE_bool(discard_locals, options::TWO_DASHES, 'X', false,
N_("Delete all temporary local symbols"), NULL);
DEFINE_bool(dynamic_list_data, options::TWO_DASHES, '\0', false,
N_("Add data symbols to dynamic symbols"), NULL);

58
gold/target.cc Normal file
View File

@ -0,0 +1,58 @@
// target.cc
// Copyright 2009 Free Software Foundation, Inc.
// Written by Doug Kwan <dougkwan@google.com>.
// This file is part of gold.
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
// MA 02110-1301, USA.
#include "gold.h"
#include "target.h"
namespace gold
{
// Return whether NAME is a local label name. This is used to implement the
// --discard-locals options and can be overriden by children classes to
// implement system-specific behaviour. The logic here is the same as that
// in _bfd_elf_is_local_label_name().
bool
Target::do_is_local_label_name (const char* name) const
{
// Normal local symbols start with ``.L''.
if (name[0] == '.' && name[1] == 'L')
return true;
// At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
// DWARF debugging symbols starting with ``..''.
if (name[0] == '.' && name[1] == '.')
return true;
// gcc will sometimes generate symbols beginning with ``_.L_'' when
// emitting DWARF debugging output. I suspect this is actually a
// small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
// ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
// underscore to be emitted on some ELF targets). For ease of use,
// we treat such symbols as local.
if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')
return true;
return false;
}
} // End namespace gold.

10
gold/target.h
View File

@ -173,6 +173,12 @@ class Target
adjust_elf_header(unsigned char* view, int len) const
{ return this->do_adjust_elf_header(view, len); }
// Return whether NAME is a local label name. This is used to implement the
// --discard-locals options.
bool
is_local_label_name(const char* name) const
{ return this->do_is_local_label_name(name); }
protected:
// This struct holds the constant information for a child class. We
// use a struct to avoid the overhead of virtual function calls for
@ -239,6 +245,10 @@ class Target
do_adjust_elf_header(unsigned char*, int) const
{ }
// Virtual function which may be overriden by the child class.
virtual bool
do_is_local_label_name(const char*) const;
private:
Target(const Target&);
Target& operator=(const Target&);

12
gold/testsuite/Makefile.am
View File

@ -1080,5 +1080,17 @@ local_labels_test.o: ver_test_6.c
local_labels_test: local_labels_test.o
$(LINK) -Bgcctestdir/ local_labels_test.o
check_PROGRAMS += discard_locals_test
check_SCRIPTS += discard_locals_test.sh
check_DATA += discard_locals_test.syms
MOSTLYCLEANFILES += discard_locals_test.syms
discard_locals_test_SOURCES = discard_locals_test.c
discard_locals_test_LDFLAGS = -Bgcctestdir/ -Wl,--discard-locals
discard_locals_test.syms: discard_locals_test
$(TEST_READELF) -sW $< >$@ 2>/dev/null
# '-Wa,-L' is required to preserve the local label used for testing.
discard_locals_test.o: discard_locals_test.c
$(COMPILE) -c -Wa,-L -o $@ $<
endif GCC
endif NATIVE_LINKER

46
gold/testsuite/Makefile.in
View File

@ -319,12 +319,17 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_3.err \
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4.err
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_24 = exclude_libs_test \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ local_labels_test
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_25 = exclude_libs_test.sh
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_26 = exclude_libs_test.syms
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_27 = exclude_libs_test.syms libexclude_libs_test_1.a \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ libexclude_libs_test_2.a alt/libexclude_libs_test_3.a
@GCC_TRUE@@NATIVE_LINKER_TRUE@ local_labels_test \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ discard_locals_test
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_25 = exclude_libs_test.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ discard_locals_test.sh
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_26 = exclude_libs_test.syms \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ discard_locals_test.syms
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_27 = exclude_libs_test.syms \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ libexclude_libs_test_1.a \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ libexclude_libs_test_2.a \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ alt/libexclude_libs_test_3.a \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ discard_locals_test.syms
subdir = testsuite
DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
@ -431,7 +436,8 @@ libgoldtest_a_OBJECTS = $(am_libgoldtest_a_OBJECTS)
@GCC_TRUE@@NATIVE_LINKER_TRUE@@PLUGINS_TRUE@ plugin_test_4$(EXEEXT)
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_17 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ exclude_libs_test$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ local_labels_test$(EXEEXT)
@GCC_TRUE@@NATIVE_LINKER_TRUE@ local_labels_test$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ discard_locals_test$(EXEEXT)
basic_pic_test_SOURCES = basic_pic_test.c
basic_pic_test_OBJECTS = basic_pic_test.$(OBJEXT)
basic_pic_test_LDADD = $(LDADD)
@ -490,6 +496,14 @@ am__copy_test_SOURCES_DIST = copy_test.cc
@GCC_TRUE@@NATIVE_LINKER_TRUE@am_copy_test_OBJECTS = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ copy_test.$(OBJEXT)
copy_test_OBJECTS = $(am_copy_test_OBJECTS)
am__discard_locals_test_SOURCES_DIST = discard_locals_test.c
@GCC_TRUE@@NATIVE_LINKER_TRUE@am_discard_locals_test_OBJECTS = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ discard_locals_test.$(OBJEXT)
discard_locals_test_OBJECTS = $(am_discard_locals_test_OBJECTS)
discard_locals_test_LDADD = $(LDADD)
discard_locals_test_DEPENDENCIES = libgoldtest.a ../libgold.a \
../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
am__exception_same_shared_test_SOURCES_DIST = exception_test_main.cc
@GCC_TRUE@@NATIVE_LINKER_TRUE@am_exception_same_shared_test_OBJECTS = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ exception_test_main.$(OBJEXT)
@ -899,6 +913,7 @@ SOURCES = $(libgoldtest_a_SOURCES) basic_pic_test.c \
$(binary_test_SOURCES) $(binary_unittest_SOURCES) \
$(common_test_1_SOURCES) $(constructor_static_test_SOURCES) \
$(constructor_test_SOURCES) $(copy_test_SOURCES) \
$(discard_locals_test_SOURCES) \
$(exception_same_shared_test_SOURCES) \
$(exception_separate_shared_12_test_SOURCES) \
$(exception_separate_shared_21_test_SOURCES) \
@ -952,6 +967,7 @@ DIST_SOURCES = $(libgoldtest_a_SOURCES) basic_pic_test.c \
$(am__constructor_static_test_SOURCES_DIST) \
$(am__constructor_test_SOURCES_DIST) \
$(am__copy_test_SOURCES_DIST) \
$(am__discard_locals_test_SOURCES_DIST) \
$(am__exception_same_shared_test_SOURCES_DIST) \
$(am__exception_separate_shared_12_test_SOURCES_DIST) \
$(am__exception_separate_shared_21_test_SOURCES_DIST) \
@ -1528,7 +1544,8 @@ binary_unittest_SOURCES = binary_unittest.cc
@GCC_TRUE@@NATIVE_LINKER_TRUE@exclude_libs_test_LDADD = -lexclude_libs_test_1 -lexclude_libs_test_2 \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ alt/libexclude_libs_test_3.a
@GCC_TRUE@@NATIVE_LINKER_TRUE@local_labels_test_LDFLAGS = -Bgcctestdir/
@GCC_TRUE@@NATIVE_LINKER_TRUE@discard_locals_test_SOURCES = discard_locals_test.c
@GCC_TRUE@@NATIVE_LINKER_TRUE@discard_locals_test_LDFLAGS = -Bgcctestdir/ -Wl,--discard-locals
all: $(BUILT_SOURCES)
$(MAKE) $(AM_MAKEFLAGS) all-am
@ -1543,9 +1560,9 @@ $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(am__confi
exit 1;; \
esac; \
done; \
echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu testsuite/Makefile'; \
echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign testsuite/Makefile'; \
cd $(top_srcdir) && \
$(AUTOMAKE) --gnu testsuite/Makefile
$(AUTOMAKE) --foreign testsuite/Makefile
.PRECIOUS: Makefile
Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
@case '$?' in \
@ -1615,6 +1632,9 @@ constructor_test$(EXEEXT): $(constructor_test_OBJECTS) $(constructor_test_DEPEND
copy_test$(EXEEXT): $(copy_test_OBJECTS) $(copy_test_DEPENDENCIES)
@rm -f copy_test$(EXEEXT)
$(CXXLINK) $(copy_test_LDFLAGS) $(copy_test_OBJECTS) $(copy_test_LDADD) $(LIBS)
discard_locals_test$(EXEEXT): $(discard_locals_test_OBJECTS) $(discard_locals_test_DEPENDENCIES)
@rm -f discard_locals_test$(EXEEXT)
$(LINK) $(discard_locals_test_LDFLAGS) $(discard_locals_test_OBJECTS) $(discard_locals_test_LDADD) $(LIBS)
exception_same_shared_test$(EXEEXT): $(exception_same_shared_test_OBJECTS) $(exception_same_shared_test_DEPENDENCIES)
@rm -f exception_same_shared_test$(EXEEXT)
$(CXXLINK) $(exception_same_shared_test_LDFLAGS) $(exception_same_shared_test_OBJECTS) $(exception_same_shared_test_LDADD) $(LIBS)
@ -1898,6 +1918,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/common_test_1.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/constructor_test.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/copy_test.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/discard_locals_test.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/exception_test_1.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/exception_test_2.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/exception_test_main.Po@am__quote@
@ -2634,6 +2655,11 @@ uninstall-am: uninstall-info-am
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -g -c -Wa,-L -o $@ $<
@GCC_TRUE@@NATIVE_LINKER_TRUE@local_labels_test: local_labels_test.o
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ local_labels_test.o
@GCC_TRUE@@NATIVE_LINKER_TRUE@discard_locals_test.syms: discard_locals_test
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_READELF) -sW $< >$@ 2>/dev/null
# '-Wa,-L' is required to preserve the local label used for testing.
@GCC_TRUE@@NATIVE_LINKER_TRUE@discard_locals_test.o: discard_locals_test.c
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -c -Wa,-L -o $@ $<
# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

40
gold/testsuite/discard_locals_test.c Normal file
View File

@ -0,0 +1,40 @@
/* discard_locals_test.c -- test --discard-locals option.
Copyright 2009 Free Software Foundation, Inc.
Doug Kwan <dougkwan@google.com>.
This file is part of gold.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA.
This is a test of a common symbol in the main program and a
versioned symbol in a shared library. The common symbol in the
main program should override the shared library symbol. */
/* Local symbol format for generic ELF target. */
asm (".Lshould_be_discarded:");
#ifdef __i386__
/* Additional local symbol format for the i386 target. */
asm (".Xshould_be_discarded:");
#endif
int
main (void)
{
return 0;
}

44
gold/testsuite/discard_locals_test.sh Executable file
View File

@ -0,0 +1,44 @@
#!/bin/sh
# discard_locals_test.sh -- test that local symbols are discarded.
# Copyright 2009 Free Software Foundation, Inc.
# Written by Doug Kwan <dougkwan@google.com>
# This file is part of gold.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.
# This file goes with exclude_libs_test.c, a C source file
# linked with option -Wl,--exclude-libs. We run readelf on
# the resulting executable and check that symbols from two test library
# archives are correctly hidden or left unmodified.
check()
{
file=$1
found=`egrep "should_be_discarded" $file`
if test -n "$found"; then
echo "These local symbols are not discarded in $file:"
echo "$found"
exit 1
fi
}
check "discard_locals_test.syms"
exit 0