1 files changed, 4 insertions, 0 deletions

diff --git a/manual/manual.of b/manual/manual.of
index ad120f5e..cef3e22a 100644
--- a/manual/manual.of
+++ b/manual/manual.of
@@ -4486,6 +4486,10 @@ This string always has a zero (@Char{\0})
 after its last character (as @N{in C}),
 but can contain other zeros in its body.
 
+This function can raise memory errors only
+when converting a number to a string
+(as then it has to create a new string).
+
 }
 
 @APIEntry{lua_Number lua_tonumber (lua_State *L, int index);|