*symp = sym;
- if (sym == NULL)
+ if (sym != NULL)
{
- // Check whether the symbol was named in a -u option.
- if (parameters->options().is_undefined(sym_name))
- {
- *why = "-u ";
- *why += sym_name;
- }
- else if (parameters->options().is_export_dynamic_symbol(sym_name))
- {
- *why = "--export-dynamic-symbol ";
- *why += sym_name;
- }
- else if (layout->script_options()->is_referenced(sym_name))
- {
- size_t alc = 100 + strlen(sym_name);
- char* buf = new char[alc];
- snprintf(buf, alc, _("script or expression reference to %s"),
- sym_name);
- *why = buf;
- delete[] buf;
- }
- else if (strcmp(sym_name, parameters->entry()) == 0)
- {
- *why = "entry symbol ";
- *why += sym_name;
- }
- else
- return Library_base::SHOULD_INCLUDE_UNKNOWN;
+ if (!sym->is_undefined())
+ return Library_base::SHOULD_INCLUDE_NO;
+
+ // PR 12001: Do not include an archive when the undefined
+ // symbol has actually been defined on the command line.
+ if (layout->script_options()->is_pending_assignment(sym_name))
+ return Library_base::SHOULD_INCLUDE_NO;
+
+ // If the symbol is weak undefined, we still need to check
+ // for other reasons (like a -u option).
+ if (sym->binding() != elfcpp::STB_WEAK)
+ return Library_base::SHOULD_INCLUDE_YES;
+ }
+
+ // Check whether the symbol was named in a -u option.
+ if (parameters->options().is_undefined(sym_name))
+ {
+ *why = "-u ";
+ *why += sym_name;
+ return Library_base::SHOULD_INCLUDE_YES;
+ }
+
+ if (parameters->options().is_export_dynamic_symbol(sym_name))
+ {
+ *why = "--export-dynamic-symbol ";
+ *why += sym_name;
+ return Library_base::SHOULD_INCLUDE_YES;
}
- else if (!sym->is_undefined())
- return Library_base::SHOULD_INCLUDE_NO;
- // PR 12001: Do not include an archive when the undefined
- // symbol has actually been defined on the command line.
- else if (layout->script_options()->is_pending_assignment(sym_name))
- return Library_base::SHOULD_INCLUDE_NO;
- else if (sym->binding() == elfcpp::STB_WEAK)
- return Library_base::SHOULD_INCLUDE_UNKNOWN;
-
- return Library_base::SHOULD_INCLUDE_YES;
+
+ if (layout->script_options()->is_referenced(sym_name))
+ {
+ size_t alc = 100 + strlen(sym_name);
+ char* buf = new char[alc];
+ snprintf(buf, alc, _("script or expression reference to %s"),
+ sym_name);
+ *why = buf;
+ delete[] buf;
+ return Library_base::SHOULD_INCLUDE_YES;
+ }
+
+ if (strcmp(sym_name, parameters->entry()) == 0)
+ {
+ *why = "entry symbol ";
+ *why += sym_name;
+ return Library_base::SHOULD_INCLUDE_YES;
+ }
+
+ return Library_base::SHOULD_INCLUDE_UNKNOWN;
}
// The header of an entry in the archive. This is all readable text,
test -d alt || mkdir -p alt
$(CXXLINK) -Bgcctestdir/ -shared weak_undef_file2.o
+check_PROGRAMS += weak_undef_test_2
+weak_undef_test_2_SOURCES = weak_undef_test_2.cc
+weak_undef_test_2_DEPENDENCIES = gcctestdir/ld libweak_undef_2.a
+weak_undef_test_2_LDFLAGS = -Bgcctestdir/ -u weak_undef_2
+weak_undef_test_2_LDADD = -L . -lweak_undef_2
+libweak_undef_2.a: weak_undef_file3.o weak_undef_file4.o
+ $(TEST_AR) rc $@ $^
+weak_undef_file3.o: weak_undef_file3.cc
+ $(CXXCOMPILE) -c -o $@ $<
+weak_undef_file4.o: weak_undef_file4.cc
+ $(CXXCOMPILE) -c -o $@ $<
+
if FN_PTRS_IN_SO_WITHOUT_PIC
check_PROGRAMS += weak_undef_nonpic_test
MOSTLYCLEANFILES += alt/weak_undef_lib_nonpic.so
@NATIVE_LINKER_FALSE@exception_test_DEPENDENCIES =
@GCC_TRUE@@HAVE_STATIC_TRUE@@NATIVE_LINKER_TRUE@am__append_14 = exception_static_test
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_15 = weak_test \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_undef_test
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_undef_test \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_undef_test_2
@GCC_FALSE@weak_test_DEPENDENCIES =
@NATIVE_LINKER_FALSE@weak_test_DEPENDENCIES =
@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_16 = weak_undef_nonpic_test
@GCC_TRUE@@NATIVE_LINKER_TRUE@ exception_separate_shared_21_test$(EXEEXT)
@GCC_TRUE@@HAVE_STATIC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_11 = exception_static_test$(EXEEXT)
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_12 = weak_test$(EXEEXT) \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_undef_test$(EXEEXT)
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_undef_test$(EXEEXT) \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_undef_test_2$(EXEEXT)
@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_13 = weak_undef_nonpic_test$(EXEEXT)
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__EXEEXT_14 = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_alias_test$(EXEEXT) \
weak_undef_test_OBJECTS = $(am_weak_undef_test_OBJECTS)
weak_undef_test_LINK = $(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) \
$(weak_undef_test_LDFLAGS) $(LDFLAGS) -o $@
+@GCC_TRUE@@NATIVE_LINKER_TRUE@am_weak_undef_test_2_OBJECTS = \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_undef_test_2.$(OBJEXT)
+weak_undef_test_2_OBJECTS = $(am_weak_undef_test_2_OBJECTS)
+weak_undef_test_2_LINK = $(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) \
+ $(weak_undef_test_2_LDFLAGS) $(LDFLAGS) -o $@
DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
depcomp = $(SHELL) $(top_srcdir)/../depcomp
am__depfiles_maybe = depfiles
$(ver_test_2_SOURCES) $(ver_test_6_SOURCES) \
$(ver_test_8_SOURCES) $(ver_test_9_SOURCES) \
$(weak_alias_test_SOURCES) weak_plt.c $(weak_test_SOURCES) \
- $(weak_undef_nonpic_test_SOURCES) $(weak_undef_test_SOURCES)
+ $(weak_undef_nonpic_test_SOURCES) $(weak_undef_test_SOURCES) \
+ $(weak_undef_test_2_SOURCES)
ETAGS = etags
CTAGS = ctags
am__tty_colors = \
@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_test_DEPENDENCIES = gcctestdir/ld weak_undef_lib.so alt/weak_undef_lib.so
@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_test_LDFLAGS = -Bgcctestdir/ -Wl,-R,alt
@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_test_LDADD = -L . weak_undef_lib.so
+@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_test_2_SOURCES = weak_undef_test_2.cc
+@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_test_2_DEPENDENCIES = gcctestdir/ld libweak_undef_2.a
+@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_test_2_LDFLAGS = -Bgcctestdir/ -u weak_undef_2
+@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_test_2_LDADD = -L . -lweak_undef_2
@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_nonpic_test_SOURCES = weak_undef_test.cc
@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_nonpic_test_DEPENDENCIES = gcctestdir/ld weak_undef_lib_nonpic.so alt/weak_undef_lib_nonpic.so
@FN_PTRS_IN_SO_WITHOUT_PIC_TRUE@@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_nonpic_test_LDFLAGS = -Bgcctestdir/ -Wl,-R,alt
weak_undef_test$(EXEEXT): $(weak_undef_test_OBJECTS) $(weak_undef_test_DEPENDENCIES)
@rm -f weak_undef_test$(EXEEXT)
$(weak_undef_test_LINK) $(weak_undef_test_OBJECTS) $(weak_undef_test_LDADD) $(LIBS)
+weak_undef_test_2$(EXEEXT): $(weak_undef_test_2_OBJECTS) $(weak_undef_test_2_DEPENDENCIES)
+ @rm -f weak_undef_test_2$(EXEEXT)
+ $(weak_undef_test_2_LINK) $(weak_undef_test_2_OBJECTS) $(weak_undef_test_2_LDADD) $(LIBS)
mostlyclean-compile:
-rm -f *.$(OBJEXT)
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/weak_plt.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/weak_test.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/weak_undef_test.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/weak_undef_test_2.Po@am__quote@
.c.o:
@am__fastdepCC_TRUE@ $(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
@p='weak_test$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
weak_undef_test.log: weak_undef_test$(EXEEXT)
@p='weak_undef_test$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
+weak_undef_test_2.log: weak_undef_test_2$(EXEEXT)
+ @p='weak_undef_test_2$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
weak_undef_nonpic_test.log: weak_undef_nonpic_test$(EXEEXT)
@p='weak_undef_nonpic_test$(EXEEXT)'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
weak_alias_test.log: weak_alias_test$(EXEEXT)
@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
+@GCC_TRUE@@NATIVE_LINKER_TRUE@libweak_undef_2.a: weak_undef_file3.o weak_undef_file4.o
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_AR) rc $@ $^
+@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_file3.o: weak_undef_file3.cc
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXCOMPILE) -c -o $@ $<
+@GCC_TRUE@@NATIVE_LINKER_TRUE@weak_undef_file4.o: weak_undef_file4.cc
+@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXCOMPILE) -c -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
--- /dev/null
+// weak_undef_file3.cc -- test handling of weak undefined symbols for gold
+
+// Copyright 2014 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.
+
+// This file tests that we correctly deal with weak undefined symbols
+// when searching archive libraries. If we have a weak undefined symbol,
+// it should not cause us to link an archive library member that defines
+// that symbol. However, if the symbol is also listed in a -u option on
+// the command line, it should cause the archive member to be linked.
+
+int weak_undef_1 = 1;
--- /dev/null
+// weak_undef_file4.cc -- test handling of weak undefined symbols for gold
+
+// Copyright 2014 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.
+
+// This file tests that we correctly deal with weak undefined symbols
+// when searching archive libraries. If we have a weak undefined symbol,
+// it should not cause us to link an archive library member that defines
+// that symbol. However, if the symbol is also listed in a -u option on
+// the command line, it should cause the archive member to be linked.
+
+int weak_undef_2 = 2;
--- /dev/null
+// weak_undef_test_2.cc -- test handling of weak undefined symbols for gold
+
+// Copyright 2014 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.
+
+// This file tests that we correctly deal with weak undefined symbols
+// when searching archive libraries. If we have a weak undefined symbol,
+// it should not cause us to link an archive library member that defines
+// that symbol. However, if the symbol is also listed in a -u option on
+// the command line, it should cause the archive member to be linked.
+
+
+#include <cstdio>
+
+// This symbol is defined in weak_undef_file3.cc, but we should
+// not load it from the library.
+extern int weak_undef_1 __attribute__ ((weak));
+
+// This symbol is defined in weak_undef_file4.cc, but is also
+// listed in a -u option on the link command, so we should
+// load it from the library.
+extern int weak_undef_2 __attribute__ ((weak));
+
+int *p1 = &weak_undef_1;
+
+int *p2 = &weak_undef_2;
+
+int
+main()
+{
+ int status = 0;
+
+ if (&weak_undef_1 != NULL)
+ {
+ fprintf(stderr, "FAILED weak undef test 1: %s\n",
+ "&weak_undef_1 is not NULL");
+ status = 1;
+ }
+
+ if (&weak_undef_2 == NULL)
+ {
+ fprintf(stderr, "FAILED weak undef test 2: %s\n",
+ "&weak_undef_2 is NULL");
+ status = 1;
+ }
+
+ if (p1 != NULL)
+ {
+ fprintf(stderr, "FAILED weak undef test 3: %s\n",
+ "p1 is not NULL");
+ status = 1;
+ }
+
+ if (p2 == NULL)
+ {
+ fprintf(stderr, "FAILED weak undef test 4: %s\n",
+ "p2 is NULL");
+ status = 1;
+ }
+
+ return status;
+}
projects / binutils-gdb.git / commitdiff