Files
codeql/cpp/ql/src/JPL_C/LOC-4/Rule 30/FunctionPointerConversions.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

29 lines
900 B
Plaintext

/**
* @name Invalid function pointer conversion
* @description Conversions shall not be performed between a pointer to a function and any type other than an integral type.
* @kind problem
* @id cpp/jpl-c/function-pointer-conversions
* @problem.severity warning
* @precision low
* @tags correctness
* external/jpl
*/
import cpp
predicate permissibleConversion(Type t) {
t instanceof IntegralType or
t instanceof FunctionPointerType or
permissibleConversion(t.getUnspecifiedType()) or
permissibleConversion(t.(TypedefType).getBaseType()) or
permissibleConversion(t.(ReferenceType).getBaseType())
}
from Expr e, Type converted
where
e.getType() instanceof FunctionPointerType and
e.getFullyConverted().getType() = converted and
not permissibleConversion(converted)
select e,
"Function pointer converted to " + converted.getName() + ", which is not an integral type."