<p>Osm2pgsql relies on the order nodes, then ways, then relations for<br>
correct functioning. Future versions will also need ids to be in order<br>
for efficiency and to allow merging and simplification of input files.</p>
<p>This commits adds a warning output when the order is not correct.</p>
<p>See <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="616095345" data-permission-text="Title is private" data-url="https://github.com/openstreetmap/osm2pgsql/issues/1167" data-hovercard-type="issue" data-hovercard-url="/openstreetmap/osm2pgsql/issues/1167/hovercard" href="https://github.com/openstreetmap/osm2pgsql/issues/1167">#1167</a>.</p>
<p><a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/pnorman/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/pnorman">@pnorman</a> Can you please review?</p>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>  <a href='https://github.com/openstreetmap/osm2pgsql/pull/1250'>https://github.com/openstreetmap/osm2pgsql/pull/1250</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>Check order of input files and warn if they are out of order</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/openstreetmap/osm2pgsql/pull/1250/files#diff-95e351a3805a1dafa85bf20b81d086e6">src/CMakeLists.txt</a>
    (1)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/openstreetmap/osm2pgsql/pull/1250/files#diff-72a4add88920e264a3bd2b83090933d9">src/check-order.cpp</a>
    (79)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/openstreetmap/osm2pgsql/pull/1250/files#diff-787985c359b88cd6dc8f6eee29b1c9ab">src/check-order.hpp</a>
    (40)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/openstreetmap/osm2pgsql/pull/1250/files#diff-945b0338af91c31d5230475d7275513d">src/osmdata.cpp</a>
    (4)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/openstreetmap/osm2pgsql/pull/1250.patch'>https://github.com/openstreetmap/osm2pgsql/pull/1250.patch</a></li>
  <li><a href='https://github.com/openstreetmap/osm2pgsql/pull/1250.diff'>https://github.com/openstreetmap/osm2pgsql/pull/1250.diff</a></li>
</ul>

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