* configure.ac (DEBUGGER_SEES_C_MACROS): Remove.

* src/lisp.h (DEBUGGER_SEES_C_MACROS): Likewise.
It apparently doesn't work for GCC 3, and I suppose it's more
trouble than it's worth to worry about this.

ChangeLog

@@ -1,3 +1,9 @@
+2013-11-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* configure.ac (DEBUGGER_SEES_C_MACROS): Remove.
+	It apparently doesn't work for GCC 3, and I suppose it's more
+	trouble than it's worth to worry about this.
+
 2013-11-15  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* configure.ac (DEBUGGER_SEES_C_MACROS): New macro.

configure.ac

@@ -697,16 +697,6 @@ if test "$ac_test_CFLAGS" != set; then
   esac
 fi
 
-for flag in $CFLAGS -; do
-  case $flag in
-    -g*3)
-      AC_DEFINE([DEBUGGER_SEES_C_MACROS], 1,
-        [Define to 1 if C macros are visible to the debugger, as with
-	 GCC's -g3 option.])
-      break;;
-  esac
-done
-
 AC_ARG_ENABLE([gcc-warnings],
   [AS_HELP_STRING([--enable-gcc-warnings],
                   [turn on lots of GCC warnings/errors. This is intended for

src/ChangeLog

@@ -1,3 +1,7 @@
+2013-11-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* lisp.h (DEBUGGER_SEES_C_MACROS): Remove.
+
 2013-11-16  Eli Zaretskii  <eliz@gnu.org>
 
 	* doc.c (Fsubstitute_command_keys): Inhibit modification hooks

src/lisp.h

@@ -45,14 +45,7 @@ INLINE_HEADER_BEGIN
    definitions visible to the debugger.  It's used for symbols that
    .gdbinit needs, symbols whose values may not fit in 'int' (where an
    enum would suffice).  */
-#if defined DEBUGGER_SEES_C_MACROS && defined __GNUC__
-/* GCC versions before 3.5 have unreliable support for C macros in
-   debug info.  */
-# if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 5)
-#  undef DEBUGGER_SEES_C_MACROS
-# endif
-#endif
-#if defined MAIN_PROGRAM && !defined DEBUGGER_SEES_C_MACROS
+#if defined MAIN_PROGRAM
 # define DEFINE_GDB_SYMBOL_BEGIN(type, id) type const id EXTERNALLY_VISIBLE
 # define DEFINE_GDB_SYMBOL_END(id) = id;
 #else