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src: only set v8 flags if argc > 1

ParseArgs sets the first element of v8_args to argv[0], so v8_argc will
always be at least 1. This change only calls
V8::SetFlagsFromCommandLine if v8_argc > 1, leading to an additional
startup improvement of ~5%.

PR-URL: #2646
Reviewed-By: trevnorris - Trevor Norris <trev.norris@gmail.com>
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evanlucas authored and rvagg committed Sep 2, 2015
1 parent 205aab3 commit 2308a27c0aca3f0d1ea10780802642b4b4c9e8ac
Showing with 1 addition and 1 deletion.
  1. +1 −1 src/node.cc
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@@ -3688,7 +3688,7 @@ void Init(int* argc,
#endif
// The const_cast doesn't violate conceptual const-ness. V8 doesn't modify
// the argv array or the elements it points to.
if (v8_argc != 0)
if (v8_argc > 1)
V8::SetFlagsFromCommandLine(&v8_argc, const_cast<char**>(v8_argv), true);
// Anything that's still in v8_argv is not a V8 or a node option.

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