Adding upstream version 5:7.2.5.upstream/5%7.2.5upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 11 insertions, 2 deletions

diff --git a/src/script_lua.c b/src/script_lua.c
index 8cdd805..2c92638 100644
--- a/src/script_lua.c
+++ b/src/script_lua.c
@@ -818,8 +818,17 @@ static robj **luaArgsToRedisArgv(lua_State *lua, int *argc, int *argv_len) {
             /* We can't use lua_tolstring() for number -> string conversion
              * since Lua uses a format specifier that loses precision. */
             lua_Number num = lua_tonumber(lua,j+1);
-            obj_len = fpconv_dtoa((double)num, dbuf);
-            dbuf[obj_len] = '\0';
+            /* Integer printing function is much faster, check if we can safely use it.
+             * Since lua_Number is not explicitly an integer or a double, we need to make an effort
+             * to convert it as an integer when that's possible, since the string could later be used
+             * in a context that doesn't support scientific notation (e.g. 1e9 instead of 100000000). */
+            long long lvalue;
+            if (double2ll((double)num, &lvalue))
+                obj_len = ll2string(dbuf, sizeof(dbuf), lvalue);
+            else {
+                obj_len = fpconv_dtoa((double)num, dbuf);
+                dbuf[obj_len] = '\0';
+            }
             obj_s = dbuf;
         } else {
             obj_s = (char*)lua_tolstring(lua,j+1,&obj_len);