Put a breakpoint on __asan_report_error for ASAN

* configure.ac: Append gdbasan.in to .gdbinit if CFLAGS contains
	-fsanitize=address.
	* configure: Regenerated.

	* gdbasan.in: New file.

From-SVN: r205669

gcc/ChangeLog

@@ -1,3 +1,11 @@
+2013-12-04  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* configure.ac: Append gdbasan.in to .gdbinit if CFLAGS contains
+	-fsanitize=address.
+	* configure: Regenerated.
+
+	* gdbasan.in: New file.
+
 2013-12-04  Jakub Jelinek  <jakub@redhat.com>
 
 	PR rtl-optimization/58726

gcc/configure

@@ -27508,6 +27508,14 @@ fi
 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
 
+# Put a breakpoint on __asan_report_error to help with debugging buffer
+# overflow.
+case "$CFLAGS" in
+*-fsanitize=address*)
+  echo "source ${srcdir}/gdbasan.in" >> .gdbinit
+  ;;
+esac
+
 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
 
 

gcc/configure.ac

@@ -5245,6 +5245,14 @@ fi
 echo "source ${srcdir}/gdbinit.in" >> .gdbinit
 echo "python import sys; sys.path.append('${srcdir}'); import gdbhooks" >> .gdbinit
 
+# Put a breakpoint on __asan_report_error to help with debugging buffer
+# overflow.
+case "$CFLAGS" in
+*-fsanitize=address*)
+  echo "source ${srcdir}/gdbasan.in" >> .gdbinit
+  ;;
+esac
+
 gcc_tooldir='$(libsubdir)/$(libsubdir_to_prefix)$(target_noncanonical)'
 AC_SUBST(gcc_tooldir)
 AC_SUBST(dollar)

gcc/gdbasan.in

@@ -0,0 +1,3 @@
+# Put a breakpoint on __asan_report_error to help with debugging buffer
+# overflow.
+b __asan_report_error