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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Peter Jones <pjones@redhat.com>
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Date: Fri, 12 Jul 2019 10:06:50 +0200
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Subject: [PATCH] Do not allow stack trampolines, anywhere.
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Signed-off-by: Peter Jones <pjones@redhat.com>
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---
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configure.ac | 3 +++
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conf/Makefile.common | 2 +-
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2 files changed, 4 insertions(+), 1 deletion(-)
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diff --git a/configure.ac b/configure.ac
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index 490353713a..a02d40a05b 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -1998,6 +1998,9 @@ if test x"$enable_wextra" != xno ; then
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HOST_CFLAGS="$HOST_CFLAGS -Wextra"
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fi
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+TARGET_CFLAGS="$TARGET_CFLAGS -Werror=trampolines -fno-trampolines"
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+HOST_CFLAGS="$HOST_CFLAGS -Werror=trampolines -fno-trampolines"
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+
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TARGET_CPP="$TARGET_CC -E"
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TARGET_CCAS=$TARGET_CC
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diff --git a/conf/Makefile.common b/conf/Makefile.common
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index 35e14ff017..0647c53b91 100644
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--- a/conf/Makefile.common
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+++ b/conf/Makefile.common
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@@ -66,7 +66,7 @@ grubconfdir = $(sysconfdir)/grub.d
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platformdir = $(pkglibdir)/$(target_cpu)-$(platform)
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starfielddir = $(pkgdatadir)/themes/starfield
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-CFLAGS_GNULIB = -Wno-undef -Wno-unused -Wno-unused-parameter -Wno-redundant-decls -Wno-unreachable-code
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+CFLAGS_GNULIB = -Wno-undef -Wno-unused -Wno-unused-parameter -Wno-redundant-decls -Wno-unreachable-code -Werror=trampolines -fno-trampolines
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CPPFLAGS_GNULIB = -I$(top_builddir)/grub-core/lib/gnulib -I$(top_srcdir)/grub-core/lib/gnulib
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CFLAGS_POSIX = -fno-builtin
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