configure: add support for memory sanitizer (--enable-msan)

Similarly to asan, tsan and ubsan, add support for msan conditionally at
configure time. This allows us to track down issues caused by using
uninitialized values.

        * configure.ac: Add configure options for -fsanitize=memory

Signed-off-by: Matthias Maennich <maennich@google.com>

diff --git a/configure.ac b/configure.ac
index 50a50c6c8932c23c1ac0c477b8a804f2bf509872..9f30ea38cf867b5a046562cde5af0d23cdace80d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -120,6 +120,12 @@ AC_ARG_ENABLE(asan,
              ENABLE_ASAN=$enableval,
              ENABLE_ASAN=no)
 
+AC_ARG_ENABLE(msan,
+             AS_HELP_STRING([--enable-msan=yes|no],
+                            [enable the support of building with -fsanitize=memory)]),
+             ENABLE_MSAN=$enableval,
+             ENABLE_MSAN=no)
+
 AC_ARG_ENABLE(tsan,
              AS_HELP_STRING([--enable-tsan=yes|no],
                             [enable the support of building with -fsanitize=thread)]),
@@ -620,6 +626,11 @@ if test x$ENABLE_ASAN = xyes; then
     CXXFLAGS="$CXXFLAGS -fsanitize=address"
 fi
 
+if test x$ENABLE_MSAN = xyes; then
+    CFLAGS="$CFLAGS -fsanitize=memory -fsanitize-memory-track-origins"
+    CXXFLAGS="$CXXFLAGS -fsanitize=memory -fsanitize-memory-track-origins"
+fi
+
 if test x$ENABLE_TSAN = xyes; then
     CFLAGS="$CFLAGS -fsanitize=thread"
     CXXFLAGS="$CXXFLAGS -fsanitize=thread"
@@ -918,6 +929,7 @@ AC_MSG_NOTICE([
     Enable python 3                               : ${ENABLE_PYTHON3}
     Enable running tests under Valgrind            : ${enable_valgrind}
     Enable build with -fsanitize=address          : ${ENABLE_ASAN}
+    Enable build with -fsanitize=memory           : ${ENABLE_MSAN}
     Enable build with -fsanitize=thread           : ${ENABLE_TSAN}
     Enable build with -fsanitize=undefined        : ${ENABLE_UBSAN}
     Generate html apidoc                          : ${ENABLE_APIDOC}