Can V8 snapshots be turned off at run-time?

[Thomas Preston]

In this document it is proposed that V8 snapshots can be disabled at run-time using the `--no-deserialize-contexts` flag. But I can't find this flag in the V8 source, has it been added yet?

If not, is there any other way to disable V8 snapshots at run-time? I'm debugging a broken Chromium build for arm 32-bit and would like to eliminate the pre-built V8 snapshot from causing the error.

Many thanks

[Jakob Kummerow]

In snapshot-enabled builds of V8 (or Chromium), it is not possible to disable usage of that snapshot, because the data in the snapshot is required for operation, and the functionality required to create a snapshot (or, equivalently, to start up without a snapshot) is not a part of those binaries.

In recent versions of V8, there is also no possibility any more to compile without a snapshot. If the version you are looking at happens to be old, then you can compile with v8_use_snapshot = false; since last October this argument is ignored.

The flag `--no-deserialize-contexts` as described in that document would not disable snapshot usage, only deserialization of contexts from the snapshot (which is only part of what a snapshot contains). And indeed, it does not appear to have been implemented :-)

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