Fix channels with element type of size zero.

From-SVN: r179030

Fix channels with element type of size zero.
From-SVN: r179030
f6cde0ad · Ian Lance Taylor · 6200761b · f6cde0ad
Commit f6cde0ad authored Sep 21, 2011 by Ian Lance Taylor
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libgo/runtime/go-new-channel.c
+1 -1

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--- a/libgo/runtime/go-new-channel.c
+++ b/libgo/runtime/go-new-channel.c
@@ -33,7 +33,7 @@ __go_new_channel (const struct __go_type_descriptor *channel_type,
  ientries = (int) entries;
  if (ientries < 0
      || (uintptr_t) ientries != entries
-      || entries > (uintptr_t) -1 / element_size)
+      || (element_size > 0 && entries > (uintptr_t) -1 / element_size))
    __go_panic_msg ("chan size out of range");

  alloc_size = (element_size + sizeof (uint64_t) - 1) / sizeof (uint64_t);