(__argp_help): Create a fake struct argp_state and

pass it to _help, otherwise the latter coredumps trying to
dereference state.root_argp.

diff --git a/lib/argp-help.c b/lib/argp-help.c
index 7c700be45ada10886f5fa34537055136633132a8..cbe884433edf7381f30048106d8345947e0f794e 100644 (file)
--- a/lib/argp-help.c
+++ b/lib/argp-help.c
@@ -1669,7 +1669,10 @@ Try `%s --help' or `%s --usage' for more information.\n"),
 void __argp_help (const struct argp *argp, FILE *stream,
                  unsigned flags, char *name)
 {
-  _help (argp, 0, stream, flags, name);
+  struct argp_state state;
+  memset (&state, 0, sizeof state);
+  state.root_argp = argp;
+  _help (argp, &state, stream, flags, name);
 }
 #ifdef weak_alias
 weak_alias (__argp_help, argp_help)