C++/C#: More sanity checks for IRType

cpp/ql/src/semmle/code/cpp/Type.qll

@@ -610,7 +610,9 @@ class FloatingPointType extends ArithmeticType {
       (
         kind >= 24 and kind <= 32
         or
-        kind = 38
+        kind >= 38 and kind <= 42
+        or
+        kind >= 45 and kind <= 50
       )
     )
   }

cpp/ql/src/semmle/code/cpp/ir/implementation/IRType.qll

@@ -258,4 +258,6 @@ module IRTypeSanity {
     strictcount(type.getIRType()) > 1 and
     message = "`LanguageType` " + type.getAQlClass() + " has multiple `IRType`s: " + concat(type.getIRType().toString(), ", ")
   }
+
+  import Language::LanguageTypeSanity
 }

cpp/ql/src/semmle/code/cpp/ir/internal/CppType.qll

@@ -532,3 +532,13 @@ string getOpaqueTagIdentityString(Type tag) {
   hasOpaqueType(tag, _) and
   result = getTypeIdentityString(tag)
 }
+
+module LanguageTypeSanity {
+  query predicate missingCppType(Type type, string message) {
+    not exists(getTypeForPRValue(type)) and
+    exists(type.getSize()) and
+    // `ProxyClass`es have a size, but only appear in uninstantiated templates
+    not type instanceof ProxyClass and 
+    message = "Type does not have an associated `CppType`."
+  }
+}

cpp/ql/test/library-tests/ir/ir/aliased_ssa_sanity.expected

@@ -17,3 +17,4 @@ missingCanonicalLanguageType
 multipleCanonicalLanguageTypes
 missingIRType
 multipleIRTypes
+missingCppType

cpp/ql/test/library-tests/ir/ir/raw_sanity.expected

@@ -17,3 +17,4 @@ missingCanonicalLanguageType
 multipleCanonicalLanguageTypes
 missingIRType
 multipleIRTypes
+missingCppType

cpp/ql/test/library-tests/ir/ir/unaliased_ssa_sanity.expected

@@ -17,3 +17,4 @@ missingCanonicalLanguageType
 multipleCanonicalLanguageTypes
 missingIRType
 multipleIRTypes
+missingCppType

cpp/ql/test/library-tests/ir/ssa/aliased_ssa_sanity.expected

@@ -17,3 +17,4 @@ missingCanonicalLanguageType
 multipleCanonicalLanguageTypes
 missingIRType
 multipleIRTypes
+missingCppType

cpp/ql/test/library-tests/ir/ssa/unaliased_ssa_sanity.expected

@@ -17,3 +17,4 @@ missingCanonicalLanguageType
 multipleCanonicalLanguageTypes
 missingIRType
 multipleIRTypes
+missingCppType

cpp/ql/test/library-tests/syntax-zoo/aliased_ssa_sanity.expected

@@ -548,3 +548,4 @@ missingCanonicalLanguageType
 multipleCanonicalLanguageTypes
 missingIRType
 multipleIRTypes
+missingCppType

cpp/ql/test/library-tests/syntax-zoo/raw_sanity.expected

@@ -696,3 +696,4 @@ missingCanonicalLanguageType
 multipleCanonicalLanguageTypes
 missingIRType
 multipleIRTypes
+missingCppType

cpp/ql/test/library-tests/syntax-zoo/unaliased_ssa_sanity.expected

@@ -557,3 +557,4 @@ missingCanonicalLanguageType
 multipleCanonicalLanguageTypes
 missingIRType
 multipleIRTypes
+missingCppType