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codeql/cpp/ql/test/examples/lgtm-query-examples/assignment_to_parameter.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 Assignment to parameter has no effect
* @description An assignment to a parameter that is not subsequently read may
* indicate a logic error.
* @kind problem
* @problem.severity warning
*/
import cpp
from Parameter p, Assignment assign
where
assign = p.getAnAssignment() and
not assign.getASuccessor+() = p.getAnAccess() and
not p.getType() instanceof ReferenceType
select assign, "Assignment of '" + assign.getRValue() + "' to parameter '$@' has no effect.", p,
p.getName()