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patches/gcc/4.4.0/150-default-fortify-source.patch
author Johannes Stezenbach <js@sig21.net>
Tue Oct 30 00:22:25 2012 +0000 (2012-10-30)
changeset 3097 5c67476c7342
permissions -rw-r--r--
scripts/functions: fix endless loop in debug-shell with IO redirection

CT_DEBUG_INTERACTIVE is disabled when stdin, stdout or
stderr are redirected, but the check is only done at
the start of the build and doesn't catch when individual
build commands use redirection. When stdin is redirected
it will cause the debug shell to exit immediately, causing
and endless loop. Thus, save the stdin/our/err file handles
and restore them before invoking the debug shell.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
Message-Id: <20121030102225.GA8303@sig21.net>
Patchwork-Id: 195409 
     1 diff -durN gcc-4.4.0.orig/gcc/doc/invoke.texi gcc-4.4.0/gcc/doc/invoke.texi

     2 --- gcc-4.4.0.orig/gcc/doc/invoke.texi	2009-05-27 21:38:11.000000000 +0200

     3 +++ gcc-4.4.0/gcc/doc/invoke.texi	2009-05-27 21:38:11.000000000 +0200

     4 @@ -5411,6 +5411,11 @@

     5  Please note the warning under @option{-fgcse} about

     6  invoking @option{-O2} on programs that use computed gotos.

     7  

     8 +NOTE: In Gentoo, @option{-D_FORTIFY_SOURCE=2} is set by default, and is

     9 +activated when @option{-O} is set to 2 or higher.  This enables additional

    10 +compile-time and run-time checks for several libc functions.  To disable,

    11 +specify either @option{-U_FORTIFY_SOURCE} or @option{-D_FORTIFY_SOURCE=0}.

    12 +

    13  @item -O3

    14  @opindex O3

    15  Optimize yet more.  @option{-O3} turns on all optimizations specified

    16 diff -durN gcc-4.4.0.orig/gcc/gcc.c gcc-4.4.0/gcc/gcc.c

    17 --- gcc-4.4.0.orig/gcc/gcc.c	2009-03-17 22:25:59.000000000 +0100

    18 +++ gcc-4.4.0/gcc/gcc.c	2009-05-27 21:38:11.000000000 +0200

    19 @@ -807,6 +807,7 @@

    20   %{H} %C %{D*&U*&A*} %{i*} %Z %i\

    21   %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\

    22   %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\

    23 + %{!D_FORTIFY_SOURCE:%{!D_FORTIFY_SOURCE=*:%{!U_FORTIFY_SOURCE:-D_FORTIFY_SOURCE=2}}}\

    24   %{E|M|MM:%W{o*}}";

    25  

    26  /* This contains cpp options which are common with cc1_options and are passed
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