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LibRegex: Treat backwards jumps to IP 0 as normal backwards jumps too
This shows up in something like /\d+|x/, where the `+` ends up jumping to the start of its own alternative.
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2 changed files with 3 additions and 1 deletions
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@ -1150,7 +1150,7 @@ void Optimizer::append_alternation(ByteCode& target, Span<ByteCode> alternatives
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VERIFY(node->has_metadata());
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QualifiedIP ip = node->metadata_value().first();
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auto intended_jump_ip = ip.instruction_position + jump_offset + opcode.size();
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if (jump_offset < 0 && intended_jump_ip > 0) {
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if (jump_offset < 0) {
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VERIFY(has_any_backwards_jump);
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// We should've already seen this instruction, so we can just patch it in.
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auto& ip_mapping = ip_mapping_for_alternative(ip.alternative_index);
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