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Fix a crash in PowerRails when a terminal is not connected. 

* Bug: In Katana::GlobalNetTable::getRootNet(), when tracking up the
    net through the plug (to look if it's connected to a top level
    clock), we may encounter an *unconnected* plug.
      We where not checking that case, and went crashing. Now issue
    a warning and return NULL.
      This indicates that, up until now, we didn't encounter any
    unconnected Plug in our netlists. This did show up due to a
    building error in the SRAM Standard Cell generator.
This commit is contained in:
Jean-Paul Chaput 2022-10-14 10:10:43 +02:00
parent 82cd53b107
commit df1ba66c09
1 changed files with 8 additions and 2 deletions
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6
katana/src/PowerRails.cpp
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@ -255,6 +255,12 @@ namespace {
upNet = plug->getNet();
path = path.getHeadPath();
if (not upNet) {
cerr << Warning( "GlobalNetTable::getRootNet(): Unconnected %s."
, getString(plug).c_str() ) << endl;
return NULL;
}
}
}