ffi: varray: g++ signed/unsigned warning.

* ffi.c (ffi_varray_alloc): Add cast to this conversion. The
idea here is we are checking for truncation when cnum is
converted to size_t.

1 files changed, 1 insertions, 1 deletions

diff --git a/ffi.c b/ffi.c
index ae479e98..5b59e281 100644
--- a/ffi.c
+++ b/ffi.c
@@ -436,7 +436,7 @@ static mem_t *ffi_varray_alloc(struct txr_ffi_type *tft, val obj, val self)
 {
   cnum dynsize = ffi_varray_dynsize(tft, obj, self);
   size_t size = dynsize;
-  if (size != dynsize)
+  if ((cnum) size != dynsize)
     uw_throwf(error_s, lit("~a: array too large"), self,  nao);
   return chk_calloc(size, 1);
 }