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-rw-r--r--ext/json/json_encoder.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/ext/json/json_encoder.c b/ext/json/json_encoder.c
index 510163d823..5eb9f45573 100644
--- a/ext/json/json_encoder.c
+++ b/ext/json/json_encoder.c
@@ -33,9 +33,9 @@
/* double limits */
#include <float.h>
#if defined(DBL_MANT_DIG) && defined(DBL_MIN_EXP)
-#define PHP_JSON_DOUBLE_MAX_LENGTH (1 + DBL_MANT_DIG - DBL_MIN_EXP)
+#define PHP_JSON_DOUBLE_MAX_LENGTH (3 + DBL_MANT_DIG - DBL_MIN_EXP)
#else
-#define PHP_JSON_DOUBLE_MAX_LENGTH 1078
+#define PHP_JSON_DOUBLE_MAX_LENGTH 1080
#endif
ZEND_DECLARE_MODULE_GLOBALS(json)