* symtab.h (Symbol::is_strong_undefined): Removed unused function.

	(Symbol::needs_plt_entry): Allow weak undefined symbols.
	(Symbol::needs_dynamic_reloc): Allow weak undefined symbols when
	building shared libraries.
	* testsuite/Makefile.am (weak_undef_nonpic_test): New target.
	(weak_undef_file1_nonpic.o, weak_undef_file2_nonpic.o)
	(weak_undef_lib_nonpic.so, alt/weak_undef_lib_nonpic.so): New targets.
	* testsuite/Makefile.in: Rebuild.
	* testsuite/weak_undef.h: New file.
	* testsuite/weak_undef_file1.cc: Add extra test cases.
	* testsuite/weak_undef_file2.cc: Likewise.
	* testsuite/weak_undef_test.cc: Likewise.

diff --git a/gold/ChangeLog b/gold/ChangeLog
index 7a34ffe5d7fa731673e8044a94eec25d1b548825..228fc936e7965d6ed50438f3883528c572c17024 100644 (file)
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,18 @@
+2008-04-16  Cary Coutant  <ccoutant@google.com>
+
+       * symtab.h (Symbol::is_strong_undefined): Removed unused function.
+       (Symbol::needs_plt_entry): Allow weak undefined symbols.
+       (Symbol::needs_dynamic_reloc): Allow weak undefined symbols when
+       building shared libraries.
+       * testsuite/Makefile.am (weak_undef_nonpic_test): New target.
+       (weak_undef_file1_nonpic.o, weak_undef_file2_nonpic.o)
+       (weak_undef_lib_nonpic.so, alt/weak_undef_lib_nonpic.so): New targets.
+       * testsuite/Makefile.in: Rebuild.
+       * testsuite/weak_undef.h: New file.
+       * testsuite/weak_undef_file1.cc: Add extra test cases.
+       * testsuite/weak_undef_file2.cc: Likewise.
+       * testsuite/weak_undef_test.cc: Likewise.
+
 2008-04-16  David S. Miller  <davem@davemloft.net>
 
        * options.h (DEFINE_enable): New macro.

diff --git a/gold/symtab.h b/gold/symtab.h
index fb5828b2e0700da13c90504b2fd20ba8112645fb..64e7a388f4ce4f22454d11cf2101fcc298bb9383 100644 (file)
--- a/gold/symtab.h
+++ b/gold/symtab.h
@@ -414,15 +414,6 @@ class Symbol
             && this->shndx() == elfcpp::SHN_UNDEF);
   }
 
-  // Return whether this is a strong (i.e., not weak) undefined symbol.
-  bool
-  is_strong_undefined() const
-  {
-    return (this->source_ == FROM_OBJECT
-            && this->binding() != elfcpp::STB_WEAK
-            && this->shndx() == elfcpp::SHN_UNDEF);
-  }
-
   // Return whether this is an absolute symbol.
   bool
   is_absolute() const
@@ -478,7 +469,7 @@ class Symbol
     return (!parameters->doing_static_link()
             && this->type() == elfcpp::STT_FUNC
             && (this->is_from_dynobj()
-                || this->is_strong_undefined()
+                || this->is_undefined()
                 || this->is_preemptible()));
   }
 
@@ -506,9 +497,14 @@ class Symbol
     if (parameters->doing_static_link())
       return false;
 
-    // A reference to a weak undefined symbol or to an absolute symbol
-    // does not need a dynamic relocation.
-    if (this->is_weak_undefined() || this->is_absolute())
+    // A reference to a weak undefined symbol from an executable should be
+    // statically resolved to 0, and does not need a dynamic relocation.
+    // This matches gnu ld behavior.
+    if (this->is_weak_undefined() && !parameters->options().shared())
+      return false;
+
+    // A reference to an absolute symbol does not need a dynamic relocation.
+    if (this->is_absolute())
       return false;
 
     // An absolute reference within a position-independent output file

diff --git a/gold/testsuite/Makefile.am b/gold/testsuite/Makefile.am
index 2f950ccae585cb2a647fb855ac4c6466a7a3d0f0..5f8c7bf24eca42acdfb9db1fbf25569a50f4dd53 100644 (file)
--- a/gold/testsuite/Makefile.am
+++ b/gold/testsuite/Makefile.am
@@ -380,6 +380,24 @@ alt/weak_undef_lib.so: weak_undef_file2.o
        test -d alt || mkdir -p alt
        $(CXXLINK) -Bgcctestdir/ -shared weak_undef_file2.o
 
+if FN_PTRS_IN_SO_WITHOUT_PIC
+check_PROGRAMS += weak_undef_nonpic_test
+weak_undef_nonpic_test_SOURCES = weak_undef_test.cc
+weak_undef_nonpic_test_DEPENDENCIES = gcctestdir/ld weak_undef_lib_nonpic.so alt/weak_undef_lib_nonpic.so
+weak_undef_nonpic_test_LDFLAGS = -Bgcctestdir/ -Wl,-R,alt
+weak_undef_nonpic_test_LDADD = -L . weak_undef_lib_nonpic.so
+weak_undef_file1_nonpic.o: weak_undef_file1.cc
+       $(CXXCOMPILE) -c -o $@ $<
+weak_undef_file2_nonpic.o: weak_undef_file2.cc
+       $(CXXCOMPILE) -c -o $@ $<
+weak_undef_lib_nonpic.so: weak_undef_file1_nonpic.o
+       $(CXXLINK) -Bgcctestdir/ -shared weak_undef_file1_nonpic.o
+alt/weak_undef_lib_nonpic.so: weak_undef_file2_nonpic.o
+       test -d alt || mkdir -p alt
+       $(CXXLINK) -Bgcctestdir/ -shared weak_undef_file2_nonpic.o
+endif FN_PTRS_IN_SO_WITHOUT_PIC
+
+
 check_PROGRAMS += weak_alias_test
 weak_alias_test_SOURCES = weak_alias_test_main.cc
 weak_alias_test_DEPENDENCIES = \

diff --git a/gold/testsuite/Makefile.in b/gold/testsuite/Makefile.in
index 5b815aa575919deac85bb72bd0677dc74192342b..5f04d3fb9afe0889d9a0ee428dac27163dd1d94d 100644 (file)
--- a/gold/testsuite/Makefile.in
+++ b/gold/testsuite/Makefile.in
@@ -46,7 +46,8 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
        $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
        $(am__EXEEXT_4) $(am__EXEEXT_5) $(am__EXEEXT_6) \
        $(am__EXEEXT_7) $(am__EXEEXT_8) $(am__EXEEXT_9) \
-       $(am__EXEEXT_10) $(am__EXEEXT_11) $(am__EXEEXT_12)
+       $(am__EXEEXT_10) $(am__EXEEXT_11) $(am__EXEEXT_12) \
+       $(am__EXEEXT_13) $(am__EXEEXT_14)
 @GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_1 = basic_test \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ basic_static_test basic_pic_test \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ basic_static_pic_test \
@@ -112,8 +113,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ exception_same_shared_test \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ exception_separate_shared_12_test \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ exception_separate_shared_21_test \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_test weak_undef_test \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_alias_test
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_test weak_undef_test
 @GCC_FALSE@common_test_1_DEPENDENCIES = libgoldtest.a ../libgold.a \
 @GCC_FALSE@    ../../libiberty/libiberty.a $(am__DEPENDENCIES_1) \
 @GCC_FALSE@    $(am__DEPENDENCIES_1)
@@ -143,7 +143,9 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
 @NATIVE_LINKER_FALSE@  ../libgold.a ../../libiberty/libiberty.a \
 @NATIVE_LINKER_FALSE@  $(am__DEPENDENCIES_1) \
 @NATIVE_LINKER_FALSE@  $(am__DEPENDENCIES_1)
-@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@am__append_4 = tls_test \
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_4 = weak_undef_nonpic_test
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_5 = weak_alias_test
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@am__append_6 = tls_test \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@       tls_pic_test \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@       tls_shared_test \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@       tls_shared_ie_test \
@@ -151,12 +153,12 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
 @GCC_FALSE@tls_test_DEPENDENCIES =
 @NATIVE_LINKER_FALSE@tls_test_DEPENDENCIES =
 @TLS_FALSE@tls_test_DEPENDENCIES =
-@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_GNU2_DIALECT_TRUE@@TLS_TRUE@am__append_5 = tls_shared_gnu2_gd_to_ie_test
-@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_DESCRIPTORS_TRUE@@TLS_GNU2_DIALECT_TRUE@@TLS_TRUE@am__append_6 = tls_shared_gnu2_test
-@GCC_TRUE@@NATIVE_LINKER_TRUE@@STATIC_TLS_TRUE@@TLS_TRUE@am__append_7 = tls_static_test \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_GNU2_DIALECT_TRUE@@TLS_TRUE@am__append_7 = tls_shared_gnu2_gd_to_ie_test
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_DESCRIPTORS_TRUE@@TLS_GNU2_DIALECT_TRUE@@TLS_TRUE@am__append_8 = tls_shared_gnu2_test
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@STATIC_TLS_TRUE@@TLS_TRUE@am__append_9 = tls_static_test \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@@STATIC_TLS_TRUE@@TLS_TRUE@      tls_static_pic_test
-@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@am__append_8 = tls_shared_nonpic_test
-@CONSTRUCTOR_PRIORITY_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_9 = initpri1
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@am__append_10 = tls_shared_nonpic_test
+@CONSTRUCTOR_PRIORITY_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_11 = initpri1
 @CONSTRUCTOR_PRIORITY_FALSE@initpri1_DEPENDENCIES = libgoldtest.a \
 @CONSTRUCTOR_PRIORITY_FALSE@   ../libgold.a \
 @CONSTRUCTOR_PRIORITY_FALSE@   ../../libiberty/libiberty.a \
@@ -173,7 +175,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
 # Test --detect-odr-violations
 
 # Similar to --detect-odr-violations: check for undefined symbols in .so's
-@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_10 = debug_msg.sh \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_12 = debug_msg.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ undef_symbol.sh ver_test_2.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ ver_test_4.sh ver_test_5.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ ver_test_7.sh \
@@ -187,7 +189,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
 
 # We also want to make sure we do something reasonable when there's no
 # debug info available.  For the best test, we use .so's.
-@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_11 = debug_msg.err \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_13 = debug_msg.err \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ debug_msg_so.err \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ debug_msg_ndebug.err \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ undef_symbol.err ver_test_2.syms \
@@ -196,7 +198,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ ver_matching_test.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_3.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_4.stdout
-@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_12 = debug_msg.err \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_14 = debug_msg.err \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ debug_msg_so.err \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ debug_msg_ndebug.err \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ undef_symbol.err \
@@ -205,17 +207,17 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_4.stdout
 
 # Test -o when emitting to a special file (such as something in /dev).
-@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_13 = flagstest_o_specialfile
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_15 = flagstest_o_specialfile
 
 # Test --compress-debug-sections.  FIXME: check we actually compress.
 
 # The specialfile output has a tricky case when we also compress debug
 # sections, because it requires output-file resizing.
-@GCC_TRUE@@HAVE_ZLIB_TRUE@@NATIVE_LINKER_TRUE@am__append_14 = flagstest_compress_debug_sections \
+@GCC_TRUE@@HAVE_ZLIB_TRUE@@NATIVE_LINKER_TRUE@am__append_16 = flagstest_compress_debug_sections \
 @GCC_TRUE@@HAVE_ZLIB_TRUE@@NATIVE_LINKER_TRUE@ flagstest_o_specialfile_and_compress_debug_sections
 
 # Test symbol versioning.
-@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_15 = ver_test ver_test_2 \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_17 = ver_test ver_test_2 \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ ver_test_6 script_test_1 \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_2 justsyms \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ binary_test script_test_3
@@ -305,24 +307,25 @@ libgoldtest_a_OBJECTS = $(am_libgoldtest_a_OBJECTS)
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ exception_separate_shared_12_test$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ exception_separate_shared_21_test$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_test$(EXEEXT) \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_undef_test$(EXEEXT) \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_alias_test$(EXEEXT)
-@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@am__EXEEXT_4 =  \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_undef_test$(EXEEXT)
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_4 = weak_undef_nonpic_test$(EXEEXT)
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_5 = weak_alias_test$(EXEEXT)
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@am__EXEEXT_6 =  \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@       tls_test$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@       tls_pic_test$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@       tls_shared_test$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@       tls_shared_ie_test$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@       tls_shared_gd_to_ie_test$(EXEEXT)
-@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_GNU2_DIALECT_TRUE@@TLS_TRUE@am__EXEEXT_5 = tls_shared_gnu2_gd_to_ie_test$(EXEEXT)
-@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_DESCRIPTORS_TRUE@@TLS_GNU2_DIALECT_TRUE@@TLS_TRUE@am__EXEEXT_6 = tls_shared_gnu2_test$(EXEEXT)
-@GCC_TRUE@@NATIVE_LINKER_TRUE@@STATIC_TLS_TRUE@@TLS_TRUE@am__EXEEXT_7 = tls_static_test$(EXEEXT) \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_GNU2_DIALECT_TRUE@@TLS_TRUE@am__EXEEXT_7 = tls_shared_gnu2_gd_to_ie_test$(EXEEXT)
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_DESCRIPTORS_TRUE@@TLS_GNU2_DIALECT_TRUE@@TLS_TRUE@am__EXEEXT_8 = tls_shared_gnu2_test$(EXEEXT)
+@GCC_TRUE@@NATIVE_LINKER_TRUE@@STATIC_TLS_TRUE@@TLS_TRUE@am__EXEEXT_9 = tls_static_test$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@@STATIC_TLS_TRUE@@TLS_TRUE@      tls_static_pic_test$(EXEEXT)
-@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@am__EXEEXT_8 = tls_shared_nonpic_test$(EXEEXT)
-@CONSTRUCTOR_PRIORITY_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_9 = initpri1$(EXEEXT)
-@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_10 = flagstest_o_specialfile$(EXEEXT)
-@GCC_TRUE@@HAVE_ZLIB_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_11 = flagstest_compress_debug_sections$(EXEEXT) \
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@@TLS_TRUE@am__EXEEXT_10 = tls_shared_nonpic_test$(EXEEXT)
+@CONSTRUCTOR_PRIORITY_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_11 = initpri1$(EXEEXT)
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_12 = flagstest_o_specialfile$(EXEEXT)
+@GCC_TRUE@@HAVE_ZLIB_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_13 = flagstest_compress_debug_sections$(EXEEXT) \
 @GCC_TRUE@@HAVE_ZLIB_TRUE@@NATIVE_LINKER_TRUE@ flagstest_o_specialfile_and_compress_debug_sections$(EXEEXT)
-@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_12 = ver_test$(EXEEXT) \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_14 = ver_test$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ ver_test_2$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ ver_test_6$(EXEEXT) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_1$(EXEEXT) \
@@ -674,6 +677,9 @@ am__weak_test_SOURCES_DIST = weak_test.cc
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_test.$(OBJEXT)
 weak_test_OBJECTS = $(am_weak_test_OBJECTS)
 weak_test_LDADD = $(LDADD)
+am__weak_undef_nonpic_test_SOURCES_DIST = weak_undef_test.cc
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am_weak_undef_nonpic_test_OBJECTS = weak_undef_test.$(OBJEXT)
+weak_undef_nonpic_test_OBJECTS = $(am_weak_undef_nonpic_test_OBJECTS)
 am__weak_undef_test_SOURCES_DIST = weak_undef_test.cc
 @GCC_TRUE@@NATIVE_LINKER_TRUE@am_weak_undef_test_OBJECTS =  \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_undef_test.$(OBJEXT)
@@ -732,7 +738,7 @@ SOURCES = $(libgoldtest_a_SOURCES) basic_pic_test.c \
        $(two_file_test_SOURCES) $(ver_test_SOURCES) \
        $(ver_test_2_SOURCES) $(ver_test_6_SOURCES) \
        $(weak_alias_test_SOURCES) $(weak_test_SOURCES) \
-       $(weak_undef_test_SOURCES)
+       $(weak_undef_nonpic_test_SOURCES) $(weak_undef_test_SOURCES)
 DIST_SOURCES = $(libgoldtest_a_SOURCES) basic_pic_test.c \
        basic_static_pic_test.c basic_static_test.c basic_test.c \
        $(am__binary_test_SOURCES_DIST) $(binary_unittest_SOURCES) \
@@ -783,6 +789,7 @@ DIST_SOURCES = $(libgoldtest_a_SOURCES) basic_pic_test.c \
        $(am__ver_test_2_SOURCES_DIST) $(am__ver_test_6_SOURCES_DIST) \
        $(am__weak_alias_test_SOURCES_DIST) \
        $(am__weak_test_SOURCES_DIST) \
+       $(am__weak_undef_nonpic_test_SOURCES_DIST) \
        $(am__weak_undef_test_SOURCES_DIST)
 ETAGS = etags
 CTAGS = ctags
@@ -946,13 +953,13 @@ TEST_STRIP = $(top_builddir)/../binutils/strip-new
 # .o's), but not all of them (such as .so's and .err files).  We
 # improve on that here.  automake-1.9 info docs say "mostlyclean" is
 # the right choice for files 'make' builds that people rebuild.
-MOSTLYCLEANFILES = *.so $(am__append_12)
+MOSTLYCLEANFILES = *.so $(am__append_14)
 
 # We will add to these later, for each individual test.  Note
 # that we add each test under check_SCRIPTS or check_PROGRAMS;
 # the TESTS variable is automatically populated from these.
-check_SCRIPTS = $(am__append_10)
-check_DATA = $(am__append_11)
+check_SCRIPTS = $(am__append_12)
+check_DATA = $(am__append_13)
 TESTS = $(check_SCRIPTS) $(check_PROGRAMS)
 
 # ---------------------------------------------------------------------
@@ -1140,6 +1147,10 @@ binary_unittest_SOURCES = binary_unittest.cc
 @GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_test_DEPENDENCIES = gcctestdir/ld weak_undef_lib.so alt/weak_undef_lib.so
 @GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_test_LDFLAGS = -Bgcctestdir/ -Wl,-R,alt
 @GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_test_LDADD = -L . weak_undef_lib.so
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_nonpic_test_SOURCES = weak_undef_test.cc
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_nonpic_test_DEPENDENCIES = gcctestdir/ld weak_undef_lib_nonpic.so alt/weak_undef_lib_nonpic.so
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_nonpic_test_LDFLAGS = -Bgcctestdir/ -Wl,-R,alt
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_nonpic_test_LDADD = -L . weak_undef_lib_nonpic.so
 @GCC_TRUE@@NATIVE_LINKER_TRUE@weak_alias_test_SOURCES = weak_alias_test_main.cc
 @GCC_TRUE@@NATIVE_LINKER_TRUE@weak_alias_test_DEPENDENCIES = \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ gcctestdir/ld weak_alias_test_1.so weak_alias_test_2.so \
@@ -1473,6 +1484,9 @@ weak_alias_test$(EXEEXT): $(weak_alias_test_OBJECTS) $(weak_alias_test_DEPENDENC
 weak_test$(EXEEXT): $(weak_test_OBJECTS) $(weak_test_DEPENDENCIES) 
        @rm -f weak_test$(EXEEXT)
        $(CXXLINK) $(weak_test_LDFLAGS) $(weak_test_OBJECTS) $(weak_test_LDADD) $(LIBS)
+weak_undef_nonpic_test$(EXEEXT): $(weak_undef_nonpic_test_OBJECTS) $(weak_undef_nonpic_test_DEPENDENCIES) 
+       @rm -f weak_undef_nonpic_test$(EXEEXT)
+       $(CXXLINK) $(weak_undef_nonpic_test_LDFLAGS) $(weak_undef_nonpic_test_OBJECTS) $(weak_undef_nonpic_test_LDADD) $(LIBS)
 weak_undef_test$(EXEEXT): $(weak_undef_test_OBJECTS) $(weak_undef_test_DEPENDENCIES) 
        @rm -f weak_undef_test$(EXEEXT)
        $(CXXLINK) $(weak_undef_test_LDFLAGS) $(weak_undef_test_OBJECTS) $(weak_undef_test_LDADD) $(LIBS)
@@ -1878,6 +1892,15 @@ uninstall-am: uninstall-info-am
 @GCC_TRUE@@NATIVE_LINKER_TRUE@alt/weak_undef_lib.so: weak_undef_file2.o
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ test -d alt || mkdir -p alt
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXLINK) -Bgcctestdir/ -shared weak_undef_file2.o
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_file1_nonpic.o: weak_undef_file1.cc
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXCOMPILE) -c -o $@ $<
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_file2_nonpic.o: weak_undef_file2.cc
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXCOMPILE) -c -o $@ $<
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_lib_nonpic.so: weak_undef_file1_nonpic.o
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXLINK) -Bgcctestdir/ -shared weak_undef_file1_nonpic.o
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@alt/weak_undef_lib_nonpic.so: weak_undef_file2_nonpic.o
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@ test -d alt || mkdir -p alt
+@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXLINK) -Bgcctestdir/ -shared weak_undef_file2_nonpic.o
 @GCC_TRUE@@NATIVE_LINKER_TRUE@weak_alias_test_1_pic.o: weak_alias_test_1.cc
 @GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXCOMPILE) -c -fpic -o $@ $<
 @GCC_TRUE@@NATIVE_LINKER_TRUE@weak_alias_test_1.so: weak_alias_test_1_pic.o

diff --git a/gold/testsuite/weak_undef.h b/gold/testsuite/weak_undef.h
new file mode 100644 (file)
index 0000000..17d5f02
--- /dev/null
+++ b/gold/testsuite/weak_undef.h
@@ -0,0 +1,25 @@
+// weak_undef.h -- test handling of weak undefined symbols for gold
+
+// Copyright 2008 Free Software Foundation, Inc.
+// Written by Cary Coutant <ccoutant@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.
+
+extern int t1();
+extern int t2();
+extern int t3();

diff --git a/gold/testsuite/weak_undef_file1.cc b/gold/testsuite/weak_undef_file1.cc
index 58ab53b07303a556c5973126057398176d88ca07..743eea641e843bfd077f44df6fcc4099d0f02f69 100644 (file)
--- a/gold/testsuite/weak_undef_file1.cc
+++ b/gold/testsuite/weak_undef_file1.cc
@@ -36,10 +36,34 @@
 
 #include <cstdio>
 
-int is_such_symbol_ = 0;
+#include "weak_undef.h"
+
+int is_such_symbol_ = 1;
+
+extern int v2 __attribute__ ((weak));
+
+int *v3 = &v2;
 
 int
 t1()
 {
   return is_such_symbol_;
 }
+
+// Test that a weak reference from a shared library to a symbol
+// defined in the main program does get resolved.
+
+int
+t2()
+{
+  return (&v2 == NULL) ? -1 : v2;
+}
+
+// Test that a weak reference from a shared library to a symbol
+// defined in the main program does get resolved.
+
+int
+t3()
+{
+  return (v3 == NULL) ? -1 : *v3;
+}

diff --git a/gold/testsuite/weak_undef_file2.cc b/gold/testsuite/weak_undef_file2.cc
index 69629ad444a82f88bc89481473ff39a178e83964..610c25e7b2d524d0f78c6098b9a3e7a61c6a2d19 100644 (file)
--- a/gold/testsuite/weak_undef_file2.cc
+++ b/gold/testsuite/weak_undef_file2.cc
@@ -36,11 +36,35 @@
 
 #include <cstdio>
 
-int is_such_symbol_ = 0;
-int no_such_symbol_ = 1;
+#include "weak_undef.h"
+
+int is_such_symbol_ = 1;
+int no_such_symbol_ = 2;
+
+extern int v2 __attribute__ ((weak));
+
+int *v3 = &v2;
 
 int
 t1()
 {
   return no_such_symbol_;
 }
+
+// Test that a weak reference from a shared library to a symbol
+// defined in the main program does get resolved.
+
+int
+t2()
+{
+  return (&v2 == NULL) ? -1 : v2;
+}
+
+// Test that a weak reference from a shared library to a symbol
+// defined in the main program does get resolved.
+
+int
+t3()
+{
+  return (v3 == NULL) ? -1 : *v3;
+}

diff --git a/gold/testsuite/weak_undef_test.cc b/gold/testsuite/weak_undef_test.cc
index 1a6e17f5e97c22856ff5678e22ebd068ee314a71..962b6bf34cefe64acc4e572dd41940c12ffab2fc 100644 (file)
--- a/gold/testsuite/weak_undef_test.cc
+++ b/gold/testsuite/weak_undef_test.cc
@@ -21,8 +21,11 @@
 // MA 02110-1301, USA.
 
 // We test that we correctly deal with weak undefined symbols.
-// We need to make sure that the symbol is resolved to zero
-// by the linker and that no dynamic relocation is generated.
+// We need to make sure that a weak undefined symbol in the main
+// program is resolved to zero by the linker and that no dynamic
+// relocation is generated.  We also make sure that a weak undefined
+// symbol in a shared library can resolve to a symbol in the main
+// program.
 
 // This file will be linked with a shared library that does not
 // define the symbol, so that the symbol remains undefined.
@@ -33,16 +36,54 @@
 
 
 #include <cstdio>
+#include "weak_undef.h"
 
 extern int no_such_symbol_ __attribute__ ((weak));
 
+int *p1 = &no_such_symbol_;
+
+int v2 = 42;
+
 int
 main()
 {
+  int status = 0;
+  int v;
+
+  if ((v = t1()) != 2)
+    {
+      fprintf(stderr, "FAILED weak undef test 1: %s\n",
+              "bound to wrong library");
+      status = 1;
+    }
+
+  if ((v = t2()) != 42)
+    {
+      fprintf(stderr, "FAILED weak undef test 2: expected %d, got %d\n",
+              42, v);
+      status = 1;
+    }
+
+  if ((v = t3()) != 42)
+    {
+      fprintf(stderr, "FAILED weak undef test 3: expected %d, got %d\n",
+              42, v);
+      status = 1;
+    }
+
   if (&no_such_symbol_ != NULL)
     {
-      fprintf(stderr, "FAILED the weak undef test: &no_such_symbol_ is not NULL\n");
-      return 1;
+      fprintf(stderr, "FAILED weak undef test 4: %s\n",
+              "&no_such_symbol_ is not NULL");
+      status = 1;
     }
-  return 0;
+
+  if (p1 != NULL)
+    {
+      fprintf(stderr, "FAILED weak undef test 5: %s\n",
+              "p1 is not NULL");
+      status = 1;
+    }
+
+  return status;
 }