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-rw-r--r--libguile/eval.c43
1 files changed, 25 insertions, 18 deletions
diff --git a/libguile/eval.c b/libguile/eval.c
index ae4ee4fd8..dcbd1ac7d 100644
--- a/libguile/eval.c
+++ b/libguile/eval.c
@@ -37,24 +37,22 @@
#ifndef DEVAL
-/* AIX requires this to be the first thing in the file. The #pragma
- directive is indented so pre-ANSI compilers will ignore it, rather
- than choke on it. */
-#ifndef __GNUC__
-# if HAVE_ALLOCA_H
-# include <alloca.h>
-# else
-# ifdef _AIX
-# pragma alloca
-# else
-# ifndef alloca /* predefined by HP cc +Olibcalls */
-char *alloca ();
-# endif
-# endif
+/* This blob per the Autoconf manual (under "Particular Functions"). */
+#if HAVE_ALLOCA_H
+# include <alloca.h>
+#elif defined __GNUC__
+# define alloca __builtin_alloca
+#elif defined _AIX
+# define alloca __alloca
+#elif defined _MSC_VER
+# include <malloc.h>
+# define alloca _alloca
+#else
+# include <stddef.h>
+# ifdef __cplusplus
+extern "C"
# endif
-#endif
-#if HAVE_MALLOC_H
-#include <malloc.h> /* alloca on mingw */
+void *alloca (size_t);
#endif
#include <assert.h>
@@ -4851,7 +4849,16 @@ tail:
switch (SCM_TYP7 (proc))
{
case scm_tc7_subr_2o:
- args = scm_is_null (args) ? SCM_UNDEFINED : SCM_CAR (args);
+ if (SCM_UNBNDP (arg1))
+ scm_wrong_num_args (proc);
+ if (scm_is_null (args))
+ args = SCM_UNDEFINED;
+ else
+ {
+ if (! scm_is_null (SCM_CDR (args)))
+ scm_wrong_num_args (proc);
+ args = SCM_CAR (args);
+ }
RETURN (SCM_SUBRF (proc) (arg1, args));
case scm_tc7_subr_2:
if (scm_is_null (args) || !scm_is_null (SCM_CDR (args)))