mirror of
https://github.com/github/codeql.git
synced 2025-12-23 12:16:33 +01:00
8e6daafd7c
This commits also adds a test that uses `getParameter`. The new tests demonstrate that support for array-to-pointer decay works, but we get data flow to the array rather than its contents.
32 lines
927 B
Plaintext
32 lines
927 B
Plaintext
import cpp
|
|
import semmle.code.cpp.dataflow.DataFlow
|
|
|
|
/** Common data flow configuration to be used by tests. */
|
|
class TestAllocationConfig extends DataFlow::Configuration {
|
|
TestAllocationConfig() {
|
|
this = "TestAllocationConfig"
|
|
}
|
|
|
|
override predicate isSource(DataFlow::Node source) {
|
|
source.asExpr().(FunctionCall).getTarget().getName() = "source"
|
|
or
|
|
source.asParameter().getName().matches("source%")
|
|
or
|
|
source.(DataFlow::DefinitionByReferenceNode).getParameter().getName().matches("ref_source%")
|
|
or
|
|
// Track uninitialized variables
|
|
exists(source.asUninitialized())
|
|
}
|
|
|
|
override predicate isSink(DataFlow::Node sink) {
|
|
exists(FunctionCall call |
|
|
call.getTarget().getName() = "sink" and
|
|
sink.asExpr() = call.getAnArgument()
|
|
)
|
|
}
|
|
|
|
override predicate isBarrier(DataFlow::Node barrier) {
|
|
barrier.asExpr().(VariableAccess).getTarget().hasName("barrier")
|
|
}
|
|
}
|