#include "compat/obstack.h"
#define NCHAR (UCHAR_MAX + 1)
-#define obstack_chunk_alloc xmalloc
+/* adapter for `xmalloc()`, which takes `size_t`, not `long` */
+static void *obstack_chunk_alloc(long size)
+{
+ if (size < 0)
+ BUG("Cannot allocate a negative amount: %ld", size);
+ return xmalloc(size);
+}
#define obstack_chunk_free free
#define U(c) ((unsigned char) (c))