ChangeLog:

2011-03-16  Paul Pluzhnikov  <ppluzhnikov@google.com>

	PR gdb/12528
	* dwarf2read.c (noop_record_line): New function.
	(dwarf_decode_lines): Ignore line tables for GCd functions.

testsuite/ChangeLog:

2011-03-16  Paul Pluzhnikov  <ppluzhnikov@google.com>

	PR gdb/12528
	* gdb.base/Makefile.in: Adjust EXECUTABLES.
	* gdb.base/break-on-linker-gcd-function.exp: New test.
	* gdb.base/break-on-linker-gcd-function.cc: New file.

4 files changed, 95 insertions, 1 deletions

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index df52132..6dd9941 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2011-03-16  Paul Pluzhnikov  <ppluzhnikov@google.com>
+
+	PR gdb/12528
+	* gdb.base/Makefile.in: Adjust EXECUTABLES.
+	* gdb.base/break-on-linker-gcd-function.exp: New test.
+	* gdb.base/break-on-linker-gcd-function.cc: New file.
+
 2011-03-15  Andreas Tobler  <andreast@fgznet.ch>
 
 	* gdb.base/jit-main.c: Define ElfW for non glibc elf targets.
diff --git a/gdb/testsuite/gdb.base/Makefile.in b/gdb/testsuite/gdb.base/Makefile.in
index e80209a..72f1ba4 100644
--- a/gdb/testsuite/gdb.base/Makefile.in
+++ b/gdb/testsuite/gdb.base/Makefile.in
@@ -5,7 +5,8 @@ EXECUTABLES = a2-run advance all-types annota1 annota1-watch_thread_num \
 	annota3 anon args arrayidx async attach attach-pie-misread \
 	attach2 auxv bang\! bfp-test bigcore bitfields bitfields2 \
 	break break-always break-entry break-interp-test breako2 \
-	breakpoint-shadow call-ar-st call-rt-st call-sc-t* call-signals \
+	breakpoint-shadow break-on-linker-gcd-function \
+	call-ar-st call-rt-st call-sc-t* call-signals \
 	call-strs callexit callfuncs callfwmall charset checkpoint \
 	chng-syms code_elim1 code_elim2 commands compiler complex \
 	condbreak consecutive constvars coremaker cursal cvexpr \
diff --git a/gdb/testsuite/gdb.base/break-on-linker-gcd-function.cc b/gdb/testsuite/gdb.base/break-on-linker-gcd-function.cc
new file mode 100644
index 0000000..df781ac
--- /dev/null
+++ b/gdb/testsuite/gdb.base/break-on-linker-gcd-function.cc
@@ -0,0 +1,32 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2011 Free Software Foundation, Inc.
+
+   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, see <http://www.gnu.org/licenses/>.
+   */
+
+// Test case for PR gdb/12528
+
+void
+foo ()
+{
+  // This function is not referenced and should be GCd by the linker
+  return; // gdb break here
+}
+
+int
+main ()
+{
+  return 0;
+}
diff --git a/gdb/testsuite/gdb.base/break-on-linker-gcd-function.exp b/gdb/testsuite/gdb.base/break-on-linker-gcd-function.exp
new file mode 100644
index 0000000..9d0b481
--- /dev/null
+++ b/gdb/testsuite/gdb.base/break-on-linker-gcd-function.exp
@@ -0,0 +1,54 @@
+# Copyright 2011 Free Software Foundation, Inc.
+
+# 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, see <http://www.gnu.org/licenses/>.
+
+# This file is part of the gdb testsuite
+
+# Test casting, especially between class types or pointer-to-class
+# types.
+
+# This file is part of the gdb testsuite
+
+if $tracelevel then {
+    strace $tracelevel
+}
+
+#
+# test running programs
+#
+if { [skip_cplus_tests] } { continue }
+
+set testfile "break-on-linker-gcd-function"
+set srcfile ${testfile}.cc
+set binfile ${objdir}/${subdir}/${testfile}
+
+if [get_compiler_info ${binfile} "c++"] {
+    return -1;
+}
+
+set additional_flags {-ffunction-sections -Wl,--gc-sections}
+if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable \
+	   [list debug c++ additional_flags=$additional_flags]] != "" } {
+    untested $srcfile
+    return -1
+}
+
+clean_restart $testfile
+
+# Single hex digit
+set xd {[0-9a-f]}
+
+# This accepts e.g. "Breakpoint 1 at 0x40968a" (fixed GDB)
+# but rejects e.g. "Breakpoint 1 at 0x4" (broken GDB).
+gdb_test "b [gdb_get_line_number "gdb break here"]" "Breakpoint \[0-9\] at 0x${xd}${xd}+: .*"