150 lines
4.2 KiB
Plaintext
150 lines
4.2 KiB
Plaintext
# Copyright (C) 2013-2021 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GCC; see the file COPYING3. If not see
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# <http://www.gnu.org/licenses/>.
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# Return 1 if compilation with -fsanitize=undefined is error-free for trivial
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# code, 0 otherwise.
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set orig_ubsan_options_saved 0
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set orig_ubsan_options 0
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proc check_effective_target_fsanitize_undefined {} {
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return [check_runtime fsanitize_undefined {
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int main (void) { return 0; }
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} "-fsanitize=undefined"]
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}
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#
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# ubsan_link_flags -- compute library path and flags to find libubsan.
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# (originally from g++.exp)
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#
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proc ubsan_link_flags { paths } {
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global srcdir
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global ld_library_path
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global shlib_ext
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global ubsan_saved_library_path
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set gccpath ${paths}
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set flags ""
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set shlib_ext [get_shlib_extension]
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set ubsan_saved_library_path $ld_library_path
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if { $gccpath != "" } {
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if { [file exists "${gccpath}/libsanitizer/ubsan/.libs/libubsan.a"]
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|| [file exists "${gccpath}/libsanitizer/ubsan/.libs/libubsan.${shlib_ext}"] } {
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append flags " -B${gccpath}/libsanitizer/ "
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append flags " -B${gccpath}/libsanitizer/ubsan/ "
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append flags " -L${gccpath}/libsanitizer/ubsan/.libs"
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append ld_library_path ":${gccpath}/libsanitizer/ubsan/.libs"
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append ld_library_path ":${gccpath}/libstdc++-v3/src/.libs"
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}
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} else {
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global tool_root_dir
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set libubsan [lookfor_file ${tool_root_dir} libubsan]
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if { $libubsan != "" } {
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append flags "-L${libubsan} "
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append ld_library_path ":${libubsan}"
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}
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}
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set_ld_library_path_env_vars
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return "$flags"
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}
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#
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# ubsan_init -- called at the start of each subdir of tests
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#
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proc ubsan_init { args } {
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global TEST_ALWAYS_FLAGS
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global ALWAYS_CXXFLAGS
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global TOOL_OPTIONS
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global ubsan_saved_TEST_ALWAYS_FLAGS
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global ubsan_saved_ALWAYS_CXXFLAGS
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global orig_ubsan_options_saved
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global orig_ubsan_options
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if { $orig_ubsan_options_saved == 0 } {
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# Save the original environment.
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if [info exists env(UBSAN_OPTIONS)] {
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set orig_ubsan_options "$env(UBSAN_OPTIONS)"
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set orig_ubsan_options_saved 1
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}
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}
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setenv UBSAN_OPTIONS color=never
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set link_flags ""
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if ![is_remote host] {
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if [info exists TOOL_OPTIONS] {
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set link_flags "[ubsan_link_flags [get_multilibs ${TOOL_OPTIONS}]]"
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} else {
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set link_flags "[ubsan_link_flags [get_multilibs]]"
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}
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}
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if [info exists TEST_ALWAYS_FLAGS] {
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set ubsan_saved_TEST_ALWAYS_FLAGS $TEST_ALWAYS_FLAGS
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}
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if [info exists ALWAYS_CXXFLAGS] {
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set ubsan_saved_ALWAYS_CXXFLAGS $ALWAYS_CXXFLAGS
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set ALWAYS_CXXFLAGS [concat "{ldflags=$link_flags}" $ALWAYS_CXXFLAGS]
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} else {
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if [info exists TEST_ALWAYS_FLAGS] {
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set TEST_ALWAYS_FLAGS "$link_flags $TEST_ALWAYS_FLAGS"
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} else {
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set TEST_ALWAYS_FLAGS "$link_flags"
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}
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}
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}
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#
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# ubsan_finish -- called at the end of each subdir of tests
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#
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proc ubsan_finish { args } {
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global TEST_ALWAYS_FLAGS
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global ubsan_saved_TEST_ALWAYS_FLAGS
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global ubsan_saved_ALWAYS_CXXFLAGS
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global ubsan_saved_library_path
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global ld_library_path
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global orig_ubsan_options_saved
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global orig_ubsan_options
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if { $orig_ubsan_options_saved } {
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setenv UBSAN_OPTIONS "$orig_ubsan_options"
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} elseif [info exists env(UBSAN_OPTIONS)] {
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unsetenv UBSAN_OPTIONS
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}
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if [info exists ubsan_saved_ALWAYS_CXXFLAGS ] {
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set ALWAYS_CXXFLAGS $ubsan_saved_ALWAYS_CXXFLAGS
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} else {
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if [info exists ubsan_saved_TEST_ALWAYS_FLAGS] {
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set TEST_ALWAYS_FLAGS $ubsan_saved_TEST_ALWAYS_FLAGS
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} else {
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unset TEST_ALWAYS_FLAGS
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}
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}
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if [info exists ubsan_saved_library_path ] {
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set ld_library_path $ubsan_saved_library_path
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set_ld_library_path_env_vars
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}
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clear_effective_target_cache
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}
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