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| author | Tom Tromey <tom@tromey.com> | 2018-08-18 15:32:46 -0600 |
|---|---|---|
| committer | Tom Tromey <tom@tromey.com> | 2018-10-03 15:19:06 -0600 |
| commit | f35d5adea1cee8ce9141ad85a7e59d008c2e4d42 (patch) | |
| tree | 88cb5d24575333e1977ac5aab23466d476992288 /gdb/sanitize.m4 | |
| parent | 1dffa580e7e083a43216fd7cbcadd72c760cf29d (diff) | |
| download | binutils-gdb-f35d5adea1cee8ce9141ad85a7e59d008c2e4d42.tar.gz | |
Add --enable-ubsan
This adds --enable-ubsan to gdb's configure. By default it is enabled
in development mode, and disabled otherwise. This passes both
-fsanitize=undefined and -fno-sanitize-recover=undefined to
compilations, so that undefined behavior violations will be sure to
cause test failures.
gdb/ChangeLog
2018-10-03 Tom Tromey <tom@tromey.com>
* README: Mention --enable-ubsan.
* NEWS: Mention --enable-ubsan.
* acinclude.m4: Include sanitize.m4.
* configure: Rebuild.
* configure.ac: Call AM_GDB_UBSAN.
* sanitize.m4: New file.
gdb/doc/ChangeLog
2018-10-03 Tom Tromey <tom@tromey.com>
* gdb.texinfo (Configure Options): Document --enable-ubsan.
Diffstat (limited to 'gdb/sanitize.m4')
| -rw-r--r-- | gdb/sanitize.m4 | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/gdb/sanitize.m4 b/gdb/sanitize.m4 new file mode 100644 index 00000000000..76df44da4fe --- /dev/null +++ b/gdb/sanitize.m4 @@ -0,0 +1,46 @@ +dnl Sanitization-related configure macro for GDB +dnl Copyright (C) 2018 Free Software Foundation, Inc. +dnl +dnl This file is part of GDB. +dnl +dnl This program is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 3 of the License, or +dnl (at your option) any later version. +dnl +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program. If not, see <http://www.gnu.org/licenses/>. + +AC_DEFUN([AM_GDB_UBSAN],[ +AC_ARG_ENABLE(ubsan, + AS_HELP_STRING([--enable-ubsan], + [enable undefined behavior sanitizer (auto/yes/no)]), + [],enable_ubsan=auto) +if test "x$enable_ubsan" = xauto; then + if $development; then + enable_ubsan=yes + fi +fi +AC_LANG_PUSH([C++]) +if test "x$enable_ubsan" = xyes; then + AC_MSG_CHECKING(whether -fsanitize=undefined is accepted) + saved_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$CXXFLAGS -fsanitize=undefined -fno-sanitize-recover=undefined" + dnl A link check is required because it is possible to install gcc + dnl without libubsan, leading to link failures when compiling with + dnl -fsanitize=undefined. + AC_TRY_LINK([],[],enable_ubsan=yes,enable_ubsan=no) + CXXFLAGS="$saved_CXXFLAGS" + AC_MSG_RESULT($enable_ubsan) + if test "x$enable_ubsan" = xyes; then + WARN_CFLAGS="$WARN_CFLAGS -fsanitize=undefined -fno-sanitize-recover=undefined" + CONFIG_LDFLAGS="$CONFIG_LDFLAGS -fsanitize=undefined" + fi +fi +AC_LANG_POP([C++]) +]) |