libbacktrace: correct memory lengths in Mach-O dsym support

	* macho.c (macho_add_dsym): Make space for '/' in dsym.  Use
	correct length when freeing diralc.

diff --git a/libbacktrace/macho.c b/libbacktrace/macho.c
index 20dd3262d58bfd98076c62e5dfba7459acde817d..241d54b5e5e081bb61d029f7f2df5a7b52300569 100644 (file)
--- a/libbacktrace/macho.c
+++ b/libbacktrace/macho.c
@@ -903,6 +903,7 @@ macho_add_dsym (struct backtrace_state *state, const char *filename,
   dsymsuffixdirlen = strlen (dsymsuffixdir);
 
   dsymlen = (dirnamelen
+            + 1
             + basenamelen
             + dsymsuffixdirlen
             + basenamelen
@@ -925,7 +926,7 @@ macho_add_dsym (struct backtrace_state *state, const char *filename,
 
   if (diralc != NULL)
     {
-      backtrace_free (state, diralc, dirnamelen, error_callback, data);
+      backtrace_free (state, diralc, dirnamelen + 1, error_callback, data);
       diralc = NULL;
     }