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-rw-r--r--lib/erl_interface/src/encode/encode_double.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/erl_interface/src/encode/encode_double.c b/lib/erl_interface/src/encode/encode_double.c
index 148a49f73a..72a1c60808 100644
--- a/lib/erl_interface/src/encode/encode_double.c
+++ b/lib/erl_interface/src/encode/encode_double.c
@@ -21,12 +21,24 @@
#include "eidef.h"
#include "eiext.h"
#include "putget.h"
+#if defined(HAVE_ISFINITE)
+#include <math.h>
+#endif
int ei_encode_double(char *buf, int *index, double p)
{
char *s = buf + *index;
char *s0 = s;
+ /* Erlang does not handle Inf and NaN, so we return an error rather
+ * than letting the Erlang VM complain about a bad external
+ * term. */
+#if defined(HAVE_ISFINITE)
+ if(!isfinite(p)) {
+ return -1;
+ }
+#endif
+
if (!buf)
s += 9;
else {