C++: getExpandedArgument fixes
#20870
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The fix was accidentially lost when rebasing the branch that introduced this predicate.
This make the predicate give back sensible results on (upgraded) databases where we do not have expanded arguments, and avoid having to write case distinctions in places where we would want to use `getExpandedArgument`.
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Pull Request Overview
This PR fixes two bugs in the Compilation class related to handling expanded compiler arguments in the C++ CodeQL library.
- Corrects
getAnExpandedArgument()to properly delegate togetExpandedArgument(_)instead ofgetArgument(_) - Adds fallback logic to
getExpandedArgument(int i)to return regular arguments when expanded arguments are not available in the database
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MathiasVP
approved these changes
Nov 19, 2025
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