From 016c4dc11320a5b1a853e6d3e36d6cff45f77c3d Mon Sep 17 00:00:00 2001
From: vms <michail.vms@yandex.ru>
Date: Sun, 30 Jun 2019 21:27:19 +0300
Subject: [PATCH] fix issue with using long double in snprintf

---
 src/util.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/util.c b/src/util.c
index ca6ff4e0..44093452 100644
--- a/src/util.c
+++ b/src/util.c
@@ -540,7 +540,12 @@ int ld2string(char *buf, size_t len, long double value, int humanfriendly) {
          * way that is "non surprising" for the user (that is, most small
          * decimal numbers will be represented in a way that when converted
          * back into a string are exactly the same as what the user typed.) */
+#if __redis_unmodified_upstream // using Lf modifier used for long double crashes Redis
         l = snprintf(buf,len,"%.17Lf", value);
+#else
+        const double value_tmp = value;
+        l = snprintf(buf,len,"%lf", value_tmp);
+#endif
         if (l+1 > len) return 0; /* No room. */
         /* Now remove trailing zeroes after the '.' */
         if (strchr(buf,'.') != NULL) {
@@ -552,7 +557,12 @@ int ld2string(char *buf, size_t len, long double value, int humanfriendly) {
             if (*p == '.') l--;
         }
     } else {
+#if __redis_unmodified_upstream // using Lf modifier used for long double crashes Redis
         l = snprintf(buf,len,"%.17Lf", value);
+#else
+        const double value_tmp = value;
+        l = snprintf(buf,len,"%lf", value_tmp);
+#endif
         if (l+1 > len) return 0; /* No room. */
     }
     buf[l] = '\0';