PNaCl: Enable testing of computed gotos, including GCC torture tests

pnacl/build.sh

 #!/bin/bash
 # Copyright (c) 2012 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 #@                 PNaCl toolchain build script
 #@-------------------------------------------------------------------
 #@ This script builds the ARM and PNaCl untrusted toolchains.
 #@ It MUST be run from the native_client/ directory.
 ######################################################################
@@ skipping 2783 matching lines @@
 
 feature-version-file-install() {
   # Scons tests can check this version number to decide whether to
   # enable tests for toolchain bug fixes or new features.  This allows
   # tests to be enabled on the toolchain buildbots/trybots before the
   # new toolchain version is rolled into TOOL_REVISIONS (i.e. before
   # the tests would pass on the main NaCl buildbots/trybots).
   #
   # If you are adding a test that depends on a toolchain change, you
   # can increment this version number manually.
-  echo 3 > "${INSTALL_ROOT}/FEATURE_VERSION"
+  echo 4 > "${INSTALL_ROOT}/FEATURE_VERSION"
 }
 
 # The driver is a simple python script which changes its behavior
 # depending on the name it is invoked as.
 driver-install() {
   local bindir=bin
   # On Linux we ship a fat toolchain with 2 sets of binaries defaulting to
   # x86-32 (mostly because of the 32 bit chrome bots). So the default
   # bin dir is 32, and the bin64 driver runs the 64 bit binaries
   if ${HOST_ARCH_X8664} && ${BUILD_PLATFORM_LINUX}; then
@@ skipping 584 matching lines @@
 
 if [ "$(type -t $1)" != "function" ]; then
   #Usage
   echo "ERROR: unknown function '$1'." >&2
   echo "For help, try:"
   echo "    $0 help"
   exit 1
 fi
 
 "$@"