Simplify use of __lsan_ignore_object

* configure.ac: Use AC_CHECK_FUNCS_ONCE for __lsan_ignore_object.
* src/buffer.c, src/data.c, src/emacs-module.c, src/regex-emacs.c:
* src/search.c: Use __lsan_ignore_object unconditionally, and don’t
include sanitizer/lsan_interface.h.
* src/lisp.h (__lsan_ignore_object): Provide a dummy in the
typical case where leak sanitization is not available.

1 files changed, 0 insertions, 6 deletions

diff --git a/src/data.c b/src/data.c
index 5fff52d24c2..59d148166fe 100644
--- a/src/data.c
+++ b/src/data.c
@@ -23,10 +23,6 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.  */
 #include <math.h>
 #include <stdio.h>
 
-#ifdef HAVE_SANITIZER_LSAN_INTERFACE_H
-#include <sanitizer/lsan_interface.h>
-#endif
-
 #include <byteswap.h>
 #include <count-one-bits.h>
 #include <count-trailing-zeros.h>
@@ -1788,9 +1784,7 @@ make_blv (struct Lisp_Symbol *sym, bool forwarded,
   set_blv_defcell (blv, tem);
   set_blv_valcell (blv, tem);
   set_blv_found (blv, false);
-#ifdef HAVE___LSAN_IGNORE_OBJECT
   __lsan_ignore_object (blv);
-#endif
   return blv;
 }