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-rw-r--r--lib/getdate.y13
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/getdate.y b/lib/getdate.y
index 6ffee30b9..b57e6a56d 100644
--- a/lib/getdate.y
+++ b/lib/getdate.y
@@ -36,7 +36,18 @@
#include "getdate.h"
-#include <alloca.h>
+/* Use alloca only if it is known to be builtin. */
+#if HAVE_ALLOCA
+# include <alloca.h>
+#else
+# define YYSTACK_USE_ALLOCA 0
+#endif
+
+/* Tell Bison ow much stack space is needed. 20 should be plenty for
+ this grammar, which is not right recursive. Beware setting it too
+ high, since that might cause problems on machines whose alloca
+ implementations have lame stack-overflow checking. */
+#define YYMAXDEPTH 20
/* Since the code of getdate.y is not included in the Emacs executable
itself, there is no need to #define static in this file. Even if