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patches/gcc/4.4.2/110-trampolinewarn.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Fri Jan 01 19:03:48 2010 +0100 (2010-01-01)
changeset 1676 6f836ab1b317
parent 1544 2228ea3f6b79
permissions -rw-r--r--
cc/gcc: update ptachsets for gcc-4.4.{0,1,2}

As reported by Joachim Nilsson <jocke@vmlinux.org>
in: http://sourceware.org/ml/crossgcc/2010-01/msg00005.html

It seems I need to add the 4.3.4/290-index_macro.patch to the GCC 4.4.x
series as well. I immediately trigger the following libstdc++ bug for
4.4.2 with a uClibc .config which has UCLIBC_SUSV3_LEGACY_MACROS set[1].

http://lists.busybox.net/pipermail/uclibc/2006-April/035991.html 
     1 diff -durN gcc-4.4.0.orig/gcc/builtins.c gcc-4.4.0/gcc/builtins.c

     2 --- gcc-4.4.0.orig/gcc/builtins.c	2009-03-30 19:42:27.000000000 +0200

     3 +++ gcc-4.4.0/gcc/builtins.c	2009-05-27 21:38:01.000000000 +0200

     4 @@ -5768,6 +5768,9 @@

     5    trampolines_created = 1;

     6    INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);

     7  

     8 +  if (warn_trampolines)

     9 +    warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");

    10 +

    11    return const0_rtx;

    12  }

    13  

    14 diff -durN gcc-4.4.0.orig/gcc/common.opt gcc-4.4.0/gcc/common.opt

    15 --- gcc-4.4.0.orig/gcc/common.opt	2009-03-28 18:28:45.000000000 +0100

    16 +++ gcc-4.4.0/gcc/common.opt	2009-05-27 21:38:01.000000000 +0200

    17 @@ -197,6 +197,10 @@

    18  Common Var(warn_type_limits) Init(-1) Warning

    19  Warn if a comparison is always true or always false due to the limited range of the data type

    20  

    21 +Wtrampolines

    22 +Common Var(warn_trampolines) Init(1)

    23 +Warn whenever a trampoline is generated

    24 +

    25  Wuninitialized

    26  Common Var(warn_uninitialized) Warning

    27  Warn about uninitialized automatic variables
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