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-rw-r--r--build-aux/m4/bitcoin_secp.m416
1 files changed, 16 insertions, 0 deletions
diff --git a/build-aux/m4/bitcoin_secp.m4 b/build-aux/m4/bitcoin_secp.m4
index 11adef4f22..048267fa6e 100644
--- a/build-aux/m4/bitcoin_secp.m4
+++ b/build-aux/m4/bitcoin_secp.m4
@@ -45,6 +45,22 @@ fi
AC_MSG_RESULT($has_valgrind)
])
+AC_DEFUN([SECP_MSAN_CHECK], [
+AC_MSG_CHECKING(whether MemorySanitizer is enabled)
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+ #if defined(__has_feature)
+ # if __has_feature(memory_sanitizer)
+ /* MemorySanitizer is enabled. */
+ # elif
+ # error "MemorySanitizer is disabled."
+ # endif
+ #else
+ # error "__has_feature is not defined."
+ #endif
+ ]])], [msan_enabled=yes], [msan_enabled=no])
+AC_MSG_RESULT([$msan_enabled])
+])
+
dnl SECP_TRY_APPEND_CFLAGS(flags, VAR)
dnl Append flags to VAR if CC accepts them.
AC_DEFUN([SECP_TRY_APPEND_CFLAGS], [