version.c: show malloc_conf

* configure.in (jemalloc): check for the header regardless drop-in
  libjemalloc is found, for `malloc_conf` declaration.
* version.c (ruby_show_version): show `malloc_conf` if set.
  [Feature #9113]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46355 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/version.c b/version.c
index 573cf619bd..b2a4d2d25e 100644
--- a/version.c
+++ b/version.c
@@ -78,6 +78,9 @@ void
 ruby_show_version(void)
 {
     PRINT(description);
+#ifdef HAVE_MALLOC_CONF
+    if (malloc_conf) printf("malloc_conf=%s\n", malloc_conf);
+#endif
     fflush(stdout);
 }