mmap: bug: low length diagnosed as "zero-sized element type"

* ffi.c (mmap_wrap): Make the diagnostic depend on the actual
condition that it's wording is about. If the element type is
nonzero, but the length is too low for the array to have any
elements, that is not strictly an error; we can let that pass.

1 files changed, 1 insertions, 1 deletions

diff --git a/ffi.c b/ffi.c
index e6ffdbfb..1a95ea80 100644
--- a/ffi.c
+++ b/ffi.c
@@ -6906,7 +6906,7 @@ val mmap_wrap(val type, val len, val prot, val flags,
   int pro = c_int(prot, self);
   int flg = c_int(flags, self);
 
-  if (ln != 0 && nelem == 0)
+  if (!tft->size)
     uw_throwf(error_s, lit("~a: zero-sized element type ~s specified"),
               self, type, nao);