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-rw-r--r--util-src/pposix.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/util-src/pposix.c b/util-src/pposix.c
index 8ad167b7..73e0d6e3 100644
--- a/util-src/pposix.c
+++ b/util-src/pposix.c
@@ -676,6 +676,8 @@ int lc_fallocate(lua_State* L)
{
off_t offset, len;
FILE *f = *(FILE**) luaL_checkudata(L, 1, LUA_FILEHANDLE);
+ if (f == NULL)
+ luaL_error(L, "attempt to use a closed file");
offset = luaL_checkinteger(L, 2);
len = luaL_checkinteger(L, 3);