file-4.19-init-file.patch

   1 When a new struct magic_set is created as the handle to the calling application
   2 (in magic_open), the "file" char * is not NULLified.  This causes unexplained
   3 segfaults in other apps that don't properly have their magic.mgc file created,
   4 i.e. in app-arch/rpm-4.4.6-r3.  The file pointer is some random value, so when
   5 file_magwarn tries to report a missing magic.mgc file, for example, it tries to
   6 print ms->file, which is NULL, and the segfault occurs.
   7
   8 Fix by Jeff Hansen.
   9
  10 http://bugs.gentoo.org/163948
  11
  12 --- src/magic.c
  13 +++ src/magic.c
  14 @@ -110,6 +110,7 @@ magic_open(int flags)
  15         ms->haderr = 0;
  16         ms->error = -1;
  17         ms->mlist = NULL;
  18 +       ms->file = NULL;
  19         return ms;
  20  free3:
  21         free(ms->o.pbuf);