patches/gcc/4.3.1/110-trampolinewarn.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Thu Oct 09 19:17:49 2008 +0000 (2008-10-09)
changeset 914 0b164a321177
parent 746 b150d6f590fc
permissions -rw-r--r--
Remove CT_BROKEN.
Only one component is actually BROKEN (libelf), make it depend on EXPERIMENTAL, but state BROKEN in the prompt.
ltrace (which depends on libelf) is now marked as EXPERIMENTAL, with the reference to the BROKEN libelf in the help entry.

/trunk/docs/overview.txt | 6 0 6 0 ------
/trunk/config/debug/ltrace.in | 7 4 3 0 ++++---
/trunk/config/global/ct-behave.in | 8 0 8 0 --------
/trunk/config/tools/libelf.in | 5 3 2 0 +++--
4 files changed, 7 insertions(+), 19 deletions(-)
     1 Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/00_all_gcc-trampolinewarn.patch
     2 	This trivial patch causes gcc to emit a warning whenever
     3 	it generates a trampoline.  These are otherwise hard to
     4 	locate.  It is rigged to default ON - to have it default
     5 	to OFF remove the text 'Init(1)' from the common.opt
     6 	patch, leaving just 'Common Var(warn_trampolines)'.
     7 	Kevin F. Quinn <kevquinn@gentoo.org> 17 Jan 2006
     8 
     9 diff -durN gcc-4.3.1.orig/gcc/builtins.c gcc-4.3.1/gcc/builtins.c
    10 --- gcc-4.3.1.orig/gcc/builtins.c	2008-04-23 00:36:27.000000000 +0200
    11 +++ gcc-4.3.1/gcc/builtins.c	2008-06-10 14:56:54.000000000 +0200
    12 @@ -5662,6 +5662,9 @@
    13    trampolines_created = 1;
    14    INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
    15  
    16 +  if (warn_trampolines)
    17 +    warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");
    18 +
    19    return const0_rtx;
    20  }
    21  
    22 diff -durN gcc-4.3.1.orig/gcc/common.opt gcc-4.3.1/gcc/common.opt
    23 --- gcc-4.3.1.orig/gcc/common.opt	2008-01-22 15:11:44.000000000 +0100
    24 +++ gcc-4.3.1/gcc/common.opt	2008-06-10 14:56:54.000000000 +0200
    25 @@ -182,6 +182,10 @@
    26  Common Var(warn_system_headers) Warning
    27  Do not suppress warnings from system headers
    28  
    29 +Wtrampolines
    30 +Common Var(warn_trampolines) Init(1)
    31 +Warn whenever a trampoline is generated
    32 +
    33  Wuninitialized
    34  Common Var(warn_uninitialized) Warning
    35  Warn about uninitialized automatic variables