crosstool-ng: patches/gcc/4.4.5/110-trampolinewarn.patch@37831a33e07e

kernel/linux: fix using custom location

Currently, extract and patch are skipped as thus:
- using a custom directory of pre-installed headers
- a correctly named directory already exists

Otherwise, extract and patch are done.

The current second condition is wrong, because it allows the following
sequence to happen:
- a non-custom kernel is used
- a previous build only partially extracted the non-custom sources
- that p[revious build broke during extraction (eg. incomplete tarball...)
- a subsequent build will find a properly named directory, and will
thus skip extract and patch, which is wrong

Fix that by following the conditions in this table:

Type | Extract | Patch
----------------------+---------+-------
Pre-installed headers | N | N
custom directory | N | N
custom tarball | Y | N
mainstream tarball | Y | Y

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: David Holsgrove <david.holsgrove@xilinx.com>

     1 diff -durN gcc-4.4.5.orig/gcc/builtins.c gcc-4.4.5/gcc/builtins.c

     2 --- gcc-4.4.5.orig/gcc/builtins.c	2010-03-22 16:00:20.000000000 +0100

     3 +++ gcc-4.4.5/gcc/builtins.c	2010-10-09 22:57:58.000000000 +0200

     4 @@ -5783,6 +5783,9 @@

     5    trampolines_created = 1;

     6    INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);

     8 +  if (warn_trampolines)

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

    10 +

    11    return const0_rtx;

    12  }

    14 diff -durN gcc-4.4.5.orig/gcc/common.opt gcc-4.4.5/gcc/common.opt

    15 --- gcc-4.4.5.orig/gcc/common.opt	2009-03-28 18:28:45.000000000 +0100

    16 +++ gcc-4.4.5/gcc/common.opt	2010-10-09 22:57:58.000000000 +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

    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

author	"Yann E. MORIN" <yann.morin.1998@free.fr>
	Tue Oct 16 20:57:44 2012 +0200 (2012-10-16)
changeset 3079	37831a33e07e
permissions	-rw-r--r--