C++ Add test showing incorrect value categories for _Generics

Author: jketema

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

@@ -4179,6 +4179,40 @@ destructors_for_temps.cpp:
 #  103|             Type = [IntType] int
 #  103|             ValueCategory = prvalue
 #  104|     getStmt(1): [ReturnStmt] return ...
+generic.c:
+#    1| [TopLevelFunction] void foo(unsigned int, int)
+#    1|   <params>: 
+#    1|     getParameter(0): [Parameter] x
+#    1|         Type = [IntType] unsigned int
+#    1|     getParameter(1): [Parameter] y
+#    1|         Type = [IntType] int
+#    1|   getEntryPoint(): [BlockStmt] { ... }
+#    2|     getStmt(0): [DeclStmt] declaration
+#    2|       getDeclarationEntry(0): [VariableDeclarationEntry] definition of r
+#    2|           Type = [IntType] unsigned int
+#    3|     getStmt(1): [ExprStmt] ExprStmt
+#    3|       getExpr(): [AssignExpr] ... = ...
+#    3|           Type = [IntType] unsigned int
+#    3|           ValueCategory = prvalue
+#    3|         getLValue(): [VariableAccess] r
+#    3|             Type = [IntType] unsigned int
+#    3|             ValueCategory = lvalue
+#    3|         getRValue(): [AddExpr] ... + ...
+#    3|             Type = [IntType] unsigned int
+#    3|             ValueCategory = prvalue
+#    3|           getLeftOperand(): [VariableAccess] x
+#    3|               Type = [IntType] unsigned int
+#    3|               ValueCategory = lvalue
+#    3|           getRightOperand(): [Literal] 1
+#    3|               Type = [IntType] int
+#    3|               Value = [Literal] 1
+#    3|               ValueCategory = prvalue
+#    3|           getRightOperand().getFullyConverted(): [CStyleCast] (unsigned int)...
+#    3|               Conversion = [IntegralConversion] integral conversion
+#    3|               Type = [IntType] unsigned int
+#    3|               Value = [CStyleCast] 1
+#    3|               ValueCategory = prvalue
+#    4|     getStmt(2): [ReturnStmt] return ...
 ir.c:
 #    5| [TopLevelFunction] int getX(MyCoords*)
 #    5|   <params>: 

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

@@ -2958,6 +2958,30 @@ destructors_for_temps.cpp:
 #  102|     v102_9(void)                         = AliasedUse                               : ~m103_26
 #  102|     v102_10(void)                        = ExitFunction                             : 
 
+generic.c:
+#    1| void foo(unsigned int, int)
+#    1|   Block 0
+#    1|     v1_1(void)                = EnterFunction          : 
+#    1|     m1_2(unknown)             = AliasedDefinition      : 
+#    1|     m1_3(unknown)             = InitializeNonLocal     : 
+#    1|     m1_4(unknown)             = Chi                    : total:m1_2, partial:m1_3
+#    1|     r1_5(glval<unsigned int>) = VariableAddress[x]     : 
+#    1|     m1_6(unsigned int)        = InitializeParameter[x] : &:r1_5
+#    1|     m1_7(unknown)             = Chi                    : total:m1_4, partial:m1_6
+#    1|     r1_8(glval<int>)          = VariableAddress[y]     : 
+#    1|     m1_9(int)                 = InitializeParameter[y] : &:r1_8
+#    2|     r2_1(glval<unsigned int>) = VariableAddress[r]     : 
+#    2|     m2_2(unsigned int)        = Uninitialized[r]       : &:r2_1
+#    3|     r3_1(glval<unsigned int>) = VariableAddress[x]     : 
+#    3|     r3_2(unsigned int)        = Constant[1]            : 
+#    3|     r3_3(unsigned int)        = Add                    : r3_1, r3_2
+#    3|     r3_4(glval<unsigned int>) = VariableAddress[r]     : 
+#    3|     m3_5(unsigned int)        = Store[r]               : &:r3_4, r3_3
+#    4|     v4_1(void)                = NoOp                   : 
+#    1|     v1_10(void)               = ReturnVoid             : 
+#    1|     v1_11(void)               = AliasedUse             : m1_3
+#    1|     v1_12(void)               = ExitFunction           : 
+
 ir.c:
 #    7| void MyCoordsTest(int)
 #    7|   Block 0

cpp/ql/test/library-tests/ir/ir/generic.c

@@ -0,0 +1,6 @@
+void foo(unsigned int x, int y) {
+  unsigned int r;
+  r = _Generic(r, unsigned int: x, int: y) + 1;
+}
+
+// // semmle-extractor-options: -std=c11

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

@@ -2732,6 +2732,28 @@ destructors_for_temps.cpp:
 #  102|     v102_7(void)                         = AliasedUse                               : ~m?
 #  102|     v102_8(void)                         = ExitFunction                             : 
 
+generic.c:
+#    1| void foo(unsigned int, int)
+#    1|   Block 0
+#    1|     v1_1(void)                = EnterFunction          : 
+#    1|     mu1_2(unknown)            = AliasedDefinition      : 
+#    1|     mu1_3(unknown)            = InitializeNonLocal     : 
+#    1|     r1_4(glval<unsigned int>) = VariableAddress[x]     : 
+#    1|     mu1_5(unsigned int)       = InitializeParameter[x] : &:r1_4
+#    1|     r1_6(glval<int>)          = VariableAddress[y]     : 
+#    1|     mu1_7(int)                = InitializeParameter[y] : &:r1_6
+#    2|     r2_1(glval<unsigned int>) = VariableAddress[r]     : 
+#    2|     mu2_2(unsigned int)       = Uninitialized[r]       : &:r2_1
+#    3|     r3_1(glval<unsigned int>) = VariableAddress[x]     : 
+#    3|     r3_2(unsigned int)        = Constant[1]            : 
+#    3|     r3_3(unsigned int)        = Add                    : r3_1, r3_2
+#    3|     r3_4(glval<unsigned int>) = VariableAddress[r]     : 
+#    3|     mu3_5(unsigned int)       = Store[r]               : &:r3_4, r3_3
+#    4|     v4_1(void)                = NoOp                   : 
+#    1|     v1_8(void)                = ReturnVoid             : 
+#    1|     v1_9(void)                = AliasedUse             : ~m?
+#    1|     v1_10(void)               = ExitFunction           : 
+
 ir.c:
 #    7| void MyCoordsTest(int)
 #    7|   Block 0