add assertion before casting

19c3c957 · Yukihiro "Matz" Matsumoto · 653ddd6d · 19c3c957
Commit 19c3c957 authored Apr 03, 2014 by Yukihiro "Matz" Matsumoto
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src/codegen.c src/codegen.c +1 -0

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--- a/src/codegen.c
+++ b/src/codegen.c
@@ -719,6 +719,7 @@ attrsym(codegen_scope *s, mrb_sym a)
                                 + 1 /* '=' */
                                 + 1 /* '\0' */
                                 );
+  mrb_assert(len <= SIZE_MAX);
  memcpy(name2, name, (size_t)len);
  name2[len] = '=';
  name2[len+1] = '\0';