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Code Issues Releases Activity

AI/Nullkiller/Goals/ExecuteHeroChain.cpp: catch polymorphic exceptions by reference

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The suspicious code was detected by `gcc-13` as:

    AI/Nullkiller/Goals/ExecuteHeroChain.cpp: In member function 'virtual void NKAI::Goals::ExecuteHeroChain::accept(NKAI::AIGateway*)':
    AI/Nullkiller/Goals/ExecuteHeroChain.cpp:130:47: warning: catching polymorphic type 'class NKAI::cannotFulfillGoalException' by value [-Wcatch-value=]
      130 |                                         catch(cannotFulfillGoalException)
          |                                               ^~~~~~~~~~~~~~~~~~~~~~~~~~
    AI/Nullkiller/Goals/ExecuteHeroChain.cpp:176:23: warning: catching polymorphic type 'class NKAI::goalFulfilledException' by value [-Wcatch-value=]
      176 |                 catch(goalFulfilledException)
          |                       ^~~~~~~~~~~~~~~~~~~~~~

Similar to object passing by value and reference passing polymorphic
exceptions by reference likely destroys them when copy-constructed to
a base class. Let's catch them by reference.
This commit is contained in:
Sergei Trofimovich 2022-12-17 21:49:15 +00:00
parent 19105d1cc9
commit c2c352c6dd
1 changed files with 2 additions and 2 deletions
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4
AI/Nullkiller/Goals/ExecuteHeroChain.cpp
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@ -127,7 +127,7 @@ void ExecuteHeroChain::accept(AIGateway * ai)
continue;
}
}
catch(cannotFulfillGoalException)
catch(cannotFulfillGoalException &)
{
if(!heroPtr.validAndSet())
{
@ -173,7 +173,7 @@ void ExecuteHeroChain::accept(AIGateway * ai)
ai->nullkiller->lockHero(hero, HeroLockedReason::HERO_CHAIN);
blockedIndexes.insert(node.parentIndex);
}
catch(goalFulfilledException)
catch(goalFulfilledException &)
{
if(!heroPtr.validAndSet())
{