Print waring message when not allocated memory in putleakinfo().

ok otto.

1 files changed, 20 insertions, 2 deletions

diff --git a/src/lib/libc/stdlib/malloc.c b/src/lib/libc/stdlib/malloc.c
index c09e1541e5..814a417145 100644
--- a/src/lib/libc/stdlib/malloc.c
+++ b/src/lib/libc/stdlib/malloc.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: malloc.c,v 1.289 2023/06/30 06:24:58 otto Exp $       */
+/*      $OpenBSD: malloc.c,v 1.290 2023/09/09 06:52:40 asou Exp $       */
 /*
  * Copyright (c) 2008, 2010, 2011, 2016, 2023 Otto Moerbeek <otto@drijf.net>
  * Copyright (c) 2012 Matthew Dempsky <matthew@openbsd.org>
@@ -2338,6 +2338,22 @@ RBT_PROTOTYPE(leaktree, leaknode, entry, leakcmp);
 RBT_GENERATE(leaktree, leaknode, entry, leakcmp);
 
 static void
+wrtwarning(const char *func, char *msg, ...)
+{
+        int             saved_errno = errno;
+        va_list         ap;
+
+        dprintf(STDERR_FILENO, "%s(%d) in %s(): ", __progname,
+            getpid(), func != NULL ? func : "unknown");
+        va_start(ap, msg);
+        vdprintf(STDERR_FILENO, msg, ap);
+        va_end(ap);
+        dprintf(STDERR_FILENO, "\n");
+
+        errno = saved_errno;
+}
+
+static void
 putleakinfo(struct leaktree *leaks, void *f, size_t sz, int cnt)
 {
         struct leaknode key, *p;
@@ -2353,8 +2369,10 @@ putleakinfo(struct leaktree *leaks, void *f, size_t sz, int cnt)
                 if (page == NULL ||
                     used >= MALLOC_PAGESIZE / sizeof(struct leaknode)) {
                         page = MMAP(MALLOC_PAGESIZE, 0);
-                        if (page == MAP_FAILED)
+                        if (page == MAP_FAILED) {
+                                wrtwarning(__func__, strerror(errno));
                                 return;
+                        }
                         used = 0;
                 }
                 p = &page[used++];