PR ld/14265

	* script-sections.cc (Sections_element::output_section_name): Add
	keep return parameter.
	(Output_section_element::match_name): Add keep return parameter.
	Return the value of the keep_ member.
	* script-sections.h (class Output_section): Update
	output_section_name prototype.
	* layout.cc (Layout::keep_input_section): New public member
	function.
	(Layout::choose_output_section): Pass keep parameter to
	output_section_name.
	* layout.h (class Layout): Add keep_input_section.
	* object.cc (Sized_relobj_file::do_layout): Check for kept input
	sections.
	* testsuite/Makefile.am: Add a test.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/pr14265.c: Source file for the test.
	* testsuite/pr14265.t: Linker script for the test.
	* testsuite/pr14265.sh: Shell script for the test.

	* ld-gc/gc.exp: Add a new test.
	* ld-gc/pr14265.c: Source file for the new test.
	* ld-gc/pr14265.t: Linker script for the new test.
	* ld-gc/pr14265.d: Expected symbol dump.

5 files changed, 105 insertions, 4 deletions

diff --git a/gold/testsuite/Makefile.am b/gold/testsuite/Makefile.am
index b8b88e8..0e98e6a 100644
--- a/gold/testsuite/Makefile.am
+++ b/gold/testsuite/Makefile.am
@@ -164,6 +164,16 @@ gc_orphan_section_test:gc_orphan_section_test.o gcctestdir/ld
 gc_orphan_section_test.stdout: gc_orphan_section_test
 	$(TEST_NM) gc_orphan_section_test > gc_orphan_section_test.stdout
 
+check_SCRIPTS += pr14265.sh
+check_DATA += pr14265.stdout
+MOSTLYCLEANFILES += pr14265
+pr14265.o: pr14265.c
+	$(COMPILE) -O0 -c -o $@ $<
+pr14265: pr14265.o 
+	$(LINK) -Bgcctestdir/ -Wl,--gc-sections -T $(srcdir)/pr14265.t -o $@ $<
+pr14265.stdout: pr14265
+	$(TEST_NM) --format=bsd --numeric-sort $< > $@
+
 check_SCRIPTS += icf_test.sh
 check_DATA += icf_test.stdout
 MOSTLYCLEANFILES += icf_test
diff --git a/gold/testsuite/Makefile.in b/gold/testsuite/Makefile.in
index 4887827..a3a4506 100644
--- a/gold/testsuite/Makefile.in
+++ b/gold/testsuite/Makefile.in
@@ -76,7 +76,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_2 = incremental_test.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	gc_comdat_test.sh gc_tls_test.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	gc_orphan_section_test.sh \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_test.sh \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	pr14265.sh icf_test.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_keep_unique_test.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_safe_test.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_safe_so_test.sh \
@@ -104,7 +104,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	gc_comdat_test.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	gc_tls_test.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	gc_orphan_section_test.stdout \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_test.stdout \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	pr14265.stdout icf_test.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_keep_unique_test.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_safe_test_1.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_safe_test_2.stdout \
@@ -118,8 +118,8 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	weak_plt_shared.so debug_msg.err
 @GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_4 = incremental_test \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	gc_comdat_test gc_tls_test \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	gc_orphan_section_test icf_test \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_keep_unique_test \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	gc_orphan_section_test pr14265 \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_test icf_keep_unique_test \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_safe_test icf_safe_so_test \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	final_layout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_virtual_function_folding_test \
@@ -3661,6 +3661,8 @@ gc_tls_test.sh.log: gc_tls_test.sh
 	@p='gc_tls_test.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 gc_orphan_section_test.sh.log: gc_orphan_section_test.sh
 	@p='gc_orphan_section_test.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
+pr14265.sh.log: pr14265.sh
+	@p='pr14265.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 icf_test.sh.log: icf_test.sh
 	@p='icf_test.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 icf_keep_unique_test.sh.log: icf_keep_unique_test.sh
@@ -4272,6 +4274,12 @@ uninstall-am:
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXLINK) -Bgcctestdir/ -Wl,--gc-sections gc_orphan_section_test.o
 @GCC_TRUE@@NATIVE_LINKER_TRUE@gc_orphan_section_test.stdout: gc_orphan_section_test
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) gc_orphan_section_test > gc_orphan_section_test.stdout
+@GCC_TRUE@@NATIVE_LINKER_TRUE@pr14265.o: pr14265.c
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(COMPILE) -O0 -c -o $@ $<
+@GCC_TRUE@@NATIVE_LINKER_TRUE@pr14265: pr14265.o 
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(LINK) -Bgcctestdir/ -Wl,--gc-sections -T $(srcdir)/pr14265.t -o $@ $<
+@GCC_TRUE@@NATIVE_LINKER_TRUE@pr14265.stdout: pr14265
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) --format=bsd --numeric-sort $< > $@
 @GCC_TRUE@@NATIVE_LINKER_TRUE@icf_test.o: icf_test.cc 
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXCOMPILE) -O0 -c -ffunction-sections -g -o $@ $<
 @GCC_TRUE@@NATIVE_LINKER_TRUE@icf_test: icf_test.o gcctestdir/ld
diff --git a/gold/testsuite/pr14265.c b/gold/testsuite/pr14265.c
new file mode 100644
index 0000000..6bb8f9a
--- /dev/null
+++ b/gold/testsuite/pr14265.c
@@ -0,0 +1,20 @@
+int foo0 __attribute__((used,section(".foo0.0")));
+int foo1 __attribute__((used,section(".foo1.0")));
+int foo2 __attribute__((used,section(".foo2.0")));
+
+extern unsigned long    __foo0_start;
+extern unsigned long    __foo0_end;
+
+extern unsigned long    __foo1_start;
+extern unsigned long    __foo1_end;
+
+extern unsigned long    __foo2_start;
+extern unsigned long    __foo2_end;
+
+int
+main (void)
+{
+  return ((__foo0_end - __foo0_start) -
+	  (__foo1_end - __foo1_start) -
+	  (__foo2_end - __foo2_start));
+}
diff --git a/gold/testsuite/pr14265.sh b/gold/testsuite/pr14265.sh
new file mode 100755
index 0000000..4e477b2
--- /dev/null
+++ b/gold/testsuite/pr14265.sh
@@ -0,0 +1,40 @@
+#!/bin/sh
+
+# pr14265.sh -- test --gc-sections with KEEP
+
+# Copyright 2012 Free Software Foundation, Inc.
+# Written by Nick Clifton  <nickc@redhat.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.
+
+
+check()
+{
+    if ! grep -q "$2" "$1"
+    then
+        echo "Garbage collection failed to KEEP :"
+        echo "   $2"
+	exit 1
+    fi
+}
+
+check pr14265.stdout "foo1_start"
+check pr14265.stdout "foo1_end"
+check pr14265.stdout "foo2_start"
+check pr14265.stdout "foo2_end"
+
diff --git a/gold/testsuite/pr14265.t b/gold/testsuite/pr14265.t
new file mode 100644
index 0000000..eec56e7
--- /dev/null
+++ b/gold/testsuite/pr14265.t
@@ -0,0 +1,23 @@
+SECTIONS
+{
+    .text : { *(.text) }
+
+    __foo0_start = .;
+    .foo0 : { *(.foo0.*) }
+    __foo0_end = .;
+
+    __foo1_start = .;
+    .foo1 : { KEEP(*(.foo1.*)) }
+    __foo1_end = .;
+
+    .foo2 : {
+        __foo2_start = .;
+        KEEP(*(.foo2.*))
+        __foo2_end = .;
+    }
+}
+
+
+ASSERT (__foo1_start < __foo1_end, "foo1 not KEPT");
+ASSERT ((__foo1_end - __foo1_start) == (__foo2_end - __foo2_start),"foo2 not KEPT");
+