Fix upb load descriptor when no messages defined in prorto. (#3080)

de6ae7d4 · Paul Yang · GitHub · 22319315 · de6ae7d4
Commit de6ae7d4 authored May 11, 2017 by Paul Yang Committed by GitHub May 11, 2017
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upb.c php/ext/google/protobuf/upb.c +3 -0

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--- a/php/ext/google/protobuf/upb.c
+++ b/php/ext/google/protobuf/upb.c
@@ -2290,6 +2290,9 @@ bool upb_symtab_addfile(upb_symtab *s, upb_filedef *file, upb_status *status) {
  bool ret;

  n = upb_filedef_defcount(file);
+  if (n == 0) {
+    return true;
+  }
  defs = upb_gmalloc(sizeof(*defs) * n);

  if (defs == NULL) {