Fix bug where double macro expansion could cause an internal error.

Reported by gmcgarry.

1 files changed, 2 insertions, 0 deletions

diff --git a/cpp.c b/cpp.c
index 2f30f96..e475800 100644
--- a/cpp.c
+++ b/cpp.c
@@ -1117,6 +1117,8 @@ expmac(struct recur *rp)
 			unpstr((usch *)yytext);
 			if (orgexp == -1)
 				cunput(EXPAND);
+			else if (orgexp == -2)
+				cunput(EXPAND), cunput(EXPAND);
 			else if (orgexp == 1)
 				cunput(NOEXP);
 			unpstr(och);