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authorAriadne Conill <ariadne@dereferenced.org>2020-08-21 01:49:25 -0600
committerAriadne Conill <ariadne@dereferenced.org>2020-08-21 01:50:37 -0600
commit4941197042bc2f91ad07e83a482e7f3351860064 (patch)
tree00ee89806ea459cdfbd5015bc6a467ec8dfe16c3 /main/gcc/0002-gcc-poison-system-directories.patch
parent5e46ac7fe14755a965e972a74302b32a1e29156e (diff)
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main/gcc: upgrade to 10.2.0
Diffstat (limited to 'main/gcc/0002-gcc-poison-system-directories.patch')
-rw-r--r--main/gcc/0002-gcc-poison-system-directories.patch203
1 files changed, 203 insertions, 0 deletions
diff --git a/main/gcc/0002-gcc-poison-system-directories.patch b/main/gcc/0002-gcc-poison-system-directories.patch
new file mode 100644
index 0000000000..6d286ceda2
--- /dev/null
+++ b/main/gcc/0002-gcc-poison-system-directories.patch
@@ -0,0 +1,203 @@
+From 0e993b1b9a33910193862d76facf34bdbe58ed01 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 29 Mar 2013 08:59:00 +0400
+Subject: [PATCH 02/28] gcc: poison-system-directories
+
+Add /sw/include and /opt/include based on the original
+zecke-no-host-includes.patch patch. The original patch checked for
+/usr/include, /sw/include and /opt/include and then triggered a failure and
+aborted.
+
+Instead, we add the two missing items to the current scan. If the user
+wants this to be a failure, they can add "-Werror=poison-system-directories".
+
+Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Upstream-Status: Pending
+---
+ gcc/common.opt | 4 ++++
+ gcc/config.in | 6 ++++++
+ gcc/configure | 16 ++++++++++++++++
+ gcc/configure.ac | 10 ++++++++++
+ gcc/doc/invoke.texi | 9 +++++++++
+ gcc/gcc.c | 2 ++
+ gcc/incpath.c | 21 +++++++++++++++++++++
+ 7 files changed, 68 insertions(+)
+
+diff --git a/gcc/common.opt b/gcc/common.opt
+index 3ec7743eae8..d3c3e51dcb0 100644
+--- a/gcc/common.opt
++++ b/gcc/common.opt
+@@ -682,6 +682,10 @@ Wreturn-local-addr
+ Common Var(warn_return_local_addr) Init(1) Warning
+ Warn about returning a pointer/reference to a local or temporary variable.
+
++Wpoison-system-directories
++Common Var(flag_poison_system_directories) Init(1) Warning
++Warn for -I and -L options using system directories if cross compiling
++
+ Wshadow
+ Common Var(warn_shadow) Warning
+ Warn when one variable shadows another. Same as -Wshadow=global.
+diff --git a/gcc/config.in b/gcc/config.in
+index 364eba47737..9551c0dfdf9 100644
+--- a/gcc/config.in
++++ b/gcc/config.in
+@@ -224,6 +224,12 @@
+ #endif
+
+
++/* Define to warn for use of native system header directories */
++#ifndef USED_FOR_TARGET
++#undef ENABLE_POISON_SYSTEM_DIRECTORIES
++#endif
++
++
+ /* Define if you want all operations on RTL (the basic data structure of the
+ optimizer and back end) to be checked for dynamic type safety at runtime.
+ This is quite expensive. */
+diff --git a/gcc/configure b/gcc/configure
+index eb6061c1631..90e3be864f8 100755
+--- a/gcc/configure
++++ b/gcc/configure
+@@ -1010,6 +1010,7 @@ with_system_zlib
+ enable_maintainer_mode
+ enable_link_mutex
+ enable_version_specific_runtime_libs
++enable_poison_system_directories
+ enable_plugin
+ enable_host_shared
+ enable_libquadmath_support
+@@ -1766,6 +1767,8 @@ Optional Features:
+ --enable-version-specific-runtime-libs
+ specify that runtime libraries should be installed
+ in a compiler-specific directory
++ --enable-poison-system-directories
++ warn for use of native system header directories
+ --enable-plugin enable plugin support
+ --enable-host-shared build host code as shared libraries
+ --disable-libquadmath-support
+@@ -30266,6 +30269,19 @@ if test "${enable_version_specific_runtime_libs+set}" = set; then :
+ fi
+
+
++# Check whether --enable-poison-system-directories was given.
++if test "${enable_poison_system_directories+set}" = set; then :
++ enableval=$enable_poison_system_directories;
++else
++ enable_poison_system_directories=no
++fi
++
++if test "x${enable_poison_system_directories}" = "xyes"; then
++
++$as_echo "#define ENABLE_POISON_SYSTEM_DIRECTORIES 1" >>confdefs.h
++
++fi
++
+ # Substitute configuration variables
+
+
+diff --git a/gcc/configure.ac b/gcc/configure.ac
+index 715fcba0482..f42006e5476 100644
+--- a/gcc/configure.ac
++++ b/gcc/configure.ac
+@@ -6600,6 +6600,16 @@ AC_ARG_ENABLE(version-specific-runtime-libs,
+ [specify that runtime libraries should be
+ installed in a compiler-specific directory])])
+
++AC_ARG_ENABLE([poison-system-directories],
++ AS_HELP_STRING([--enable-poison-system-directories],
++ [warn for use of native system header directories]),,
++ [enable_poison_system_directories=no])
++if test "x${enable_poison_system_directories}" = "xyes"; then
++ AC_DEFINE([ENABLE_POISON_SYSTEM_DIRECTORIES],
++ [1],
++ [Define to warn for use of native system header directories])
++fi
++
+ # Substitute configuration variables
+ AC_SUBST(subdirs)
+ AC_SUBST(srcdir)
+diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
+index a2794a67d1e..dfed8fd25a8 100644
+--- a/gcc/doc/invoke.texi
++++ b/gcc/doc/invoke.texi
+@@ -348,6 +348,7 @@ Objective-C and Objective-C++ Dialects}.
+ -Wpacked -Wno-packed-bitfield-compat -Wpacked-not-aligned -Wpadded @gol
+ -Wparentheses -Wno-pedantic-ms-format @gol
+ -Wpointer-arith -Wno-pointer-compare -Wno-pointer-to-int-cast @gol
++-Wno-poison-system-directories @gol
+ -Wno-pragmas -Wno-prio-ctor-dtor -Wredundant-decls @gol
+ -Wrestrict -Wno-return-local-addr -Wreturn-type @gol
+ -Wno-scalar-storage-order -Wsequence-point @gol
+@@ -6924,6 +6925,14 @@ made up of data only and thus requires no special treatment. But, for
+ most targets, it is made up of code and thus requires the stack to be
+ made executable in order for the program to work properly.
+
++@item -Wno-poison-system-directories
++@opindex Wno-poison-system-directories
++Do not warn for @option{-I} or @option{-L} options using system
++directories such as @file{/usr/include} when cross compiling. This
++option is intended for use in chroot environments when such
++directories contain the correct headers and libraries for the target
++system rather than the host.
++
+ @item -Wfloat-equal
+ @opindex Wfloat-equal
+ @opindex Wno-float-equal
+diff --git a/gcc/gcc.c b/gcc/gcc.c
+index 9f790db0daf..b2200c5185a 100644
+--- a/gcc/gcc.c
++++ b/gcc/gcc.c
+@@ -1041,6 +1041,8 @@ proper position among the other output files. */
+ "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \
+ "%X %{o*} %{e*} %{N} %{n} %{r}\
+ %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!r:%{!nostartfiles:%S}}} \
++ %{Wno-poison-system-directories:--no-poison-system-directories} \
++ %{Werror=poison-system-directories:--error-poison-system-directories} \
+ %{static|no-pie|static-pie:} %@{L*} %(mfwrap) %(link_libgcc) " \
+ VTABLE_VERIFICATION_SPEC " " SANITIZER_EARLY_SPEC " %o "" \
+ %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
+diff --git a/gcc/incpath.c b/gcc/incpath.c
+index 8a2bda00f80..9098ab044ab 100644
+--- a/gcc/incpath.c
++++ b/gcc/incpath.c
+@@ -26,6 +26,7 @@
+ #include "intl.h"
+ #include "incpath.h"
+ #include "cppdefault.h"
++#include "diagnostic-core.h"
+
+ /* Microsoft Windows does not natively support inodes.
+ VMS has non-numeric inodes. */
+@@ -393,6 +394,26 @@ merge_include_chains (const char *sysroot, cpp_reader *pfile, int verbose)
+ }
+ fprintf (stderr, _("End of search list.\n"));
+ }
++
++#ifdef ENABLE_POISON_SYSTEM_DIRECTORIES
++ if (flag_poison_system_directories)
++ {
++ struct cpp_dir *p;
++
++ for (p = heads[INC_QUOTE]; p; p = p->next)
++ {
++ if ((!strncmp (p->name, "/usr/include", 12))
++ || (!strncmp (p->name, "/usr/local/include", 18))
++ || (!strncmp (p->name, "/usr/X11R6/include", 18))
++ || (!strncmp (p->name, "/sw/include", 11))
++ || (!strncmp (p->name, "/opt/include", 12)))
++ warning (OPT_Wpoison_system_directories,
++ "include location \"%s\" is unsafe for "
++ "cross-compilation",
++ p->name);
++ }
++ }
++#endif
+ }
+
+ /* Use given -I paths for #include "..." but not #include <...>, and
+--
+2.27.0
+