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authorDavid N. Welton <[email protected]>2014-12-15 17:53:09 +0100
committerBjörn-Egil Dahlberg <[email protected]>2015-03-19 11:22:37 +0100
commit372d62d4e1738431d33c1318be1ee4305c74649d (patch)
treeb193b74946f5430acd73ec40b3e3288bfa485793 /lib/erl_interface/src/encode/encode_double.c
parent243dc2ff02e3be0af2a2f1aadf7e53f09b4bdbc7 (diff)
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Do not accept Nan and Infinity values
Erlang does not accept these values, so we return an error in the C interface rather than letting them through to the Erlang VM, which rejects the message with a somewhat cryptic "bad external term".
Diffstat (limited to 'lib/erl_interface/src/encode/encode_double.c')
-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..a19a871eda 100644
--- a/lib/erl_interface/src/encode/encode_double.c
+++ b/lib/erl_interface/src/encode/encode_double.c
@@ -18,6 +18,9 @@
*/
#include <stdio.h>
#include <string.h>
+#if defined(HAVE_ISFINITE)
+#include <math.h>
+#endif
#include "eidef.h"
#include "eiext.h"
#include "putget.h"
@@ -27,6 +30,15 @@ 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 {