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codeql/cpp/ql/test/library-tests/rangeanalysis/RangeSSA/RangeSsaCompleteness.ql
Jonas Jensen 4ef5c9af62 C++: Autoformat everything
Some files that will change in #1736 have been spared.

    ./build -j4 target/jars/qlformat
    find ql/cpp/ql -name "*.ql"  -print0 | xargs -0 target/jars/qlformat --input
    find ql/cpp/ql -name "*.qll" -print0 | xargs -0 target/jars/qlformat --input
    (cd ql && git checkout 'cpp/ql/src/semmle/code/cpp/ir/implementation/**/*SSA*.qll')
    buildutils-internal/scripts/pr-checks/sync-identical-files.py --latest
2019-09-09 11:25:53 +02:00

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/**
* @name RangeSsa completeness test
* @description RangeSsa completeness test. If there is a
* RangeSsaDefinition for a variable that reaches a use of that
* variable then there must be a RangeSsaDefinition for that use
* @kind test
*/
import cpp
import semmle.code.cpp.rangeanalysis.RangeSSA
/*
* Count of number of uses of a LocalScopeVariable where no corresponding SSA definition exists,
* but at least one SSA definition for that variable can reach that use.
* Should always be zero *regardless* of the input
*/
select count(LocalScopeVariable v, Expr use |
exists(RangeSsaDefinition def, BasicBlock db, BasicBlock ub |
def.getAUse(v) = use and db.contains(def.getDefinition()) and ub.contains(use)
|
db.getASuccessor+() = ub
) and
not exists(RangeSsaDefinition def | def.getAUse(v) = use)
)