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C++: Fix duplicate result types

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In a couple of cases, we use `glval<unknown>` as the result type of an instruction because we can't come up with anything better. Two examples are the result of `VariableAddress[#ellipsis]`, and the address of the temp variable that holds the lvalue result of the conditional operator in `(a ? b : c) = y`. In both cases, we call `getTypeForGLValue(any(UnknownType t))`, but that would have multiple results because `result.hasType(any(UnknownType t), true)` also holds for `CppFunctionGLValueType`. I tightened the result type to ensure we get the right one.
This commit is contained in:
Dave Bartolomeo
2020-05-22 16:14:47 -04:00
parent b9ecf1a304
commit df834ac031
1 changed files with 1 additions and 1 deletions
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cpp/ql/src/semmle/code/cpp/ir/internal/CppType.qll
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@@ -362,7 +362,7 @@ CppType getTypeForPRValueOrUnknown(Type type) {
/**
* Gets the `CppType` that represents a glvalue of type `type`.
*/
CppType getTypeForGLValue(Type type) { result.hasType(type, true) }
CppGLValueAddressType getTypeForGLValue(Type type) { result.hasType(type, true) }
/**
* Gets the `CppType` that represents a prvalue of type `int`.