diff -u -r ../elfutils-0.166/src/unstrip.c ./src/unstrip.c
--- ../elfutils-0.166/src/unstrip.c	2016-01-12 07:49:19.000000000 -0500
+++ ./src/unstrip.c	2016-05-04 15:22:24.975567076 -0400
@@ -294,6 +294,7 @@
 static void
 make_directories (const char *path)
 {
+  size_t substr_len;
   const char *lastslash = strrchr (path, '/');
   if (lastslash == NULL)
     return;
@@ -303,7 +304,11 @@
   if (lastslash == path)
     return;
 
-  char *dir = strndupa (path, lastslash - path);
+  substr_len = lastslash - path;
+  char *dir = alloca(substr_len+1);
+  strncpy(dir, path, substr_len);
+  dir[substr_len] = 0;
+
   while (mkdir (dir, 0777) < 0 && errno != EEXIST)
     if (errno == ENOENT)
       make_directories (dir);