Skip to content

C++: Update expected test results after frontend update #20926

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
jketema wants to merge 9 commits into
base: main
Choose a base branch
from
+122 −59
Draft

C++: Update expected test results after frontend update #20926

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
9 commits
Select commit Hold shift + click to select a range
d057482
C++: Update expected test results after frontend update
jketema Nov 27, 2025
9c4bc4a
C++: Update supported compiler versions
jketema Nov 27, 2025
143d446
C++: Add `cpp/constant-comparison` FP test cases after frontend update
jketema Dec 11, 2025
6dff175
C++: Exclude more comparisons from `cpp/constant-comparison`
jketema Dec 4, 2025
93c25a7
C++: Accept test changes after frontend update and uncomment test case
jketema Dec 11, 2025
37c0cb0
C++: Add another `cpp/constant-comparison` FP test case
jketema Dec 19, 2025
d58a43a
C++: Exclude comparisons from enum constants in `cpp/constant-comparison
jketema Dec 19, 2025
18c9049
C++: Update expected test results after frontend _Generic fix
jketema Dec 30, 2025
929663a
C++: Add change notes
jketema Jan 2, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions cpp/ql/lib/change-notes/2026-01-02-constant-folding.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
---
category: minorAnalysis
---
* Some constants will now be represented by their unfolded expression trees. The `isConstant` predicate of `Expr` will no longer yield a result for those constants.
7 changes: 6 additions & 1 deletion cpp/ql/src/Likely Bugs/Arithmetic/PointlessComparison.ql
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -25,11 +25,16 @@ import UnsignedGEZero
//
// So to reduce the number of false positives, we do not report a result if
// the comparison is in a macro expansion. Similarly for template
// instantiations.
// instantiations, static asserts, non-type template arguments, enum constants,
// and constexprs.
from ComparisonOperation cmp, SmallSide ss, float left, float right, boolean value, string reason
where
not cmp.isInMacroExpansion() and
not cmp.isFromTemplateInstantiation(_) and
not exists(StaticAssert s | s.getCondition() = cmp.getParent*()) and
not exists(Declaration d | d.getATemplateArgument() = cmp.getParent*()) and
not exists(Variable v | v.isConstexpr() | v.getInitializer().getExpr() = cmp.getParent*()) and
not exists(EnumConstant e | e.getInitializer().getExpr() = cmp.getParent*()) and
not functionContainsDisabledCode(cmp.getEnclosingFunction()) and
reachablePointlessComparison(cmp, left, right, value, ss) and
// a comparison between an enum and zero is always valid because whether
Expand Down
4 changes: 4 additions & 0 deletions cpp/ql/src/change-notes/2026-01-02-constant-comparison.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
---
category: minorAnalysis
---
* The `cpp/constant-comparison` query has been updated to not produce false positives for constants that are now represented by their unfolded expression trees.
4 changes: 1 addition & 3 deletions cpp/ql/test/library-tests/constants/addresses/addresses.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -26,9 +26,7 @@ void constantAddresses(int param) {
constexpr int *array2d = &int_arr_arr[1][1] + 1;
constexpr int *const_ints = &int_arr_arr[int_const][extern_int_const];

// Commented out because clang and EDG disagree on whether this is
// constant.
//constexpr int *stmtexpr_int = &int_arr[ ({ 1; }) ];
constexpr int *stmtexpr_int = &int_arr[ ({ 1; }) ];

constexpr int *comma_int = &int_arr[ ((void)0, 1) ];
constexpr int *comma_addr = ((void)0, &int_var);
Expand Down
5 changes: 5 additions & 0 deletions cpp/ql/test/library-tests/constants/addresses/addresses.expected
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
| addresses.cpp:29:35:29:54 | & ... | stmtexpr_int | misclassified as NOT constant |
| addresses.cpp:31:32:31:55 | & ... | comma_int | misclassified as NOT constant |
| addresses.cpp:36:39:36:70 | ... ? ... : ... | ternary_ptr_cond | misclassified as NOT constant |
| addresses.cpp:37:35:37:69 | & ... | ptr_subtract | misclassified as NOT constant |
| addresses.cpp:39:35:39:50 | ... + ... | constexpr_va | misclassified as NOT constant |
10 changes: 9 additions & 1 deletion cpp/ql/test/library-tests/ir/ir/PrintAST.expected
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,14 @@
#-----| <params>:
#-----| getParameter(0): [Parameter] (unnamed parameter 0)
#-----| Type = [RValueReferenceType] __va_list_tag &&
#-----| [CopyAssignmentOperator] std::__va_list& std::__va_list::operator=(std::__va_list const&)
#-----| <params>:
#-----| getParameter(0): [Parameter] (unnamed parameter 0)
#-----| Type = [LValueReferenceType] const __va_list &
#-----| [MoveAssignmentOperator] std::__va_list& std::__va_list::operator=(std::__va_list&&)
#-----| <params>:
#-----| getParameter(0): [Parameter] (unnamed parameter 0)
#-----| Type = [RValueReferenceType] __va_list &&
#-----| [Operator,TopLevelFunction] void operator delete(void*)
#-----| <params>:
#-----| getParameter(0): [Parameter] (unnamed parameter 0)
Expand Down Expand Up @@ -4335,7 +4343,7 @@ generic.c:
# 3| ValueCategory = prvalue
# 3| getAssociationExpr(0): [ReuseExpr] reuse of x
# 3| Type = [IntType] unsigned int
# 3| ValueCategory = lvalue
# 3| ValueCategory = prvalue
# 3| getAssociationType(1): [TypeName] int
# 3| Type = [IntType] int
# 3| ValueCategory = prvalue
Expand Down
40 changes: 20 additions & 20 deletions cpp/ql/test/library-tests/ir/ir/aliased_ir.expected
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9648,29 +9648,29 @@ ir.cpp:
# 1054| r1054_1(glval<decltype([...](...){...})>) = VariableAddress[lambda_inits] :
# 1054| r1054_2(glval<decltype([...](...){...})>) = VariableAddress[#temp1054:22] :
# 1054| m1054_3(decltype([...](...){...})) = Uninitialized[#temp1054:22] : &:r1054_2
# 1054| r1054_4(glval<String &>) = FieldAddress[s] : r1054_2
# 1054| r1054_5(glval<String &>) = VariableAddress[s] :
# 1054| r1054_6(String &) = Load[s] : &:r1054_5, m1040_9
# 1054| r1054_7(glval<String>) = CopyValue : r1054_6
# 1054| r1054_8(String &) = CopyValue : r1054_7
# 1054| m1054_9(String &) = Store[?] : &:r1054_4, r1054_8
# 1054| r1054_4(glval<int>) = FieldAddress[i] : r1054_2
# 1054| r1054_5(glval<int>) = VariableAddress[x] :
# 1054| r1054_6(int) = Load[x] : &:r1054_5, ~m1052_7
# 1054| r1054_7(int) = Constant[1] :
# 1054| r1054_8(int) = Add : r1054_6, r1054_7
# 1054| m1054_9(int) = Store[?] : &:r1054_4, r1054_8
# 1054| m1054_10(decltype([...](...){...})) = Chi : total:m1054_3, partial:m1054_9
# 1054| r1054_11(glval<int>) = FieldAddress[x] : r1054_2
# 1054| r1054_12(glval<int>) = VariableAddress[x] :
# 1054| r1054_13(int) = Load[x] : &:r1054_12, ~m1052_7
# 1054| m1054_14(int) = Store[?] : &:r1054_11, r1054_13
# 1054| r1054_11(glval<int &>) = FieldAddress[j] : r1054_2
# 1054| r1054_12(glval<int>) = VariableAddress[r] :
# 1054| r1054_13(int &) = CopyValue : r1054_12
# 1054| m1054_14(int &) = Store[?] : &:r1054_11, r1054_13
# 1054| m1054_15(decltype([...](...){...})) = Chi : total:m1054_10, partial:m1054_14
# 1054| r1054_16(glval<int>) = FieldAddress[i] : r1054_2
# 1054| r1054_17(glval<int>) = VariableAddress[x] :
# 1054| r1054_18(int) = Load[x] : &:r1054_17, ~m1052_7
# 1054| r1054_19(int) = Constant[1] :
# 1054| r1054_20(int) = Add : r1054_18, r1054_19
# 1054| m1054_21(int) = Store[?] : &:r1054_16, r1054_20
# 1054| r1054_16(glval<String &>) = FieldAddress[s] : r1054_2
# 1054| r1054_17(glval<String &>) = VariableAddress[s] :
# 1054| r1054_18(String &) = Load[s] : &:r1054_17, m1040_9
# 1054| r1054_19(glval<String>) = CopyValue : r1054_18
# 1054| r1054_20(String &) = CopyValue : r1054_19
# 1054| m1054_21(String &) = Store[?] : &:r1054_16, r1054_20
# 1054| m1054_22(decltype([...](...){...})) = Chi : total:m1054_15, partial:m1054_21
# 1054| r1054_23(glval<int &>) = FieldAddress[j] : r1054_2
# 1054| r1054_24(glval<int>) = VariableAddress[r] :
# 1054| r1054_25(int &) = CopyValue : r1054_24
# 1054| m1054_26(int &) = Store[?] : &:r1054_23, r1054_25
# 1054| r1054_23(glval<int>) = FieldAddress[x] : r1054_2
# 1054| r1054_24(glval<int>) = VariableAddress[x] :
# 1054| r1054_25(int) = Load[x] : &:r1054_24, ~m1052_7
# 1054| m1054_26(int) = Store[?] : &:r1054_23, r1054_25
# 1054| m1054_27(decltype([...](...){...})) = Chi : total:m1054_22, partial:m1054_26
# 1054| r1054_28(decltype([...](...){...})) = Load[#temp1054:22] : &:r1054_2, m1054_27
# 1054| m1054_29(decltype([...](...){...})) = Store[lambda_inits] : &:r1054_1, r1054_28
Expand Down
40 changes: 20 additions & 20 deletions cpp/ql/test/library-tests/ir/ir/raw_ir.expected
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -8892,26 +8892,26 @@ ir.cpp:
# 1054| r1054_1(glval<decltype([...](...){...})>) = VariableAddress[lambda_inits] :
# 1054| r1054_2(glval<decltype([...](...){...})>) = VariableAddress[#temp1054:22] :
# 1054| mu1054_3(decltype([...](...){...})) = Uninitialized[#temp1054:22] : &:r1054_2
# 1054| r1054_4(glval<String &>) = FieldAddress[s] : r1054_2
# 1054| r1054_5(glval<String &>) = VariableAddress[s] :
# 1054| r1054_6(String &) = Load[s] : &:r1054_5, ~m?
# 1054| r1054_7(glval<String>) = CopyValue : r1054_6
# 1054| r1054_8(String &) = CopyValue : r1054_7
# 1054| mu1054_9(String &) = Store[?] : &:r1054_4, r1054_8
# 1054| r1054_10(glval<int>) = FieldAddress[x] : r1054_2
# 1054| r1054_11(glval<int>) = VariableAddress[x] :
# 1054| r1054_12(int) = Load[x] : &:r1054_11, ~m?
# 1054| mu1054_13(int) = Store[?] : &:r1054_10, r1054_12
# 1054| r1054_14(glval<int>) = FieldAddress[i] : r1054_2
# 1054| r1054_15(glval<int>) = VariableAddress[x] :
# 1054| r1054_16(int) = Load[x] : &:r1054_15, ~m?
# 1054| r1054_17(int) = Constant[1] :
# 1054| r1054_18(int) = Add : r1054_16, r1054_17
# 1054| mu1054_19(int) = Store[?] : &:r1054_14, r1054_18
# 1054| r1054_20(glval<int &>) = FieldAddress[j] : r1054_2
# 1054| r1054_21(glval<int>) = VariableAddress[r] :
# 1054| r1054_22(int &) = CopyValue : r1054_21
# 1054| mu1054_23(int &) = Store[?] : &:r1054_20, r1054_22
# 1054| r1054_4(glval<int>) = FieldAddress[i] : r1054_2
# 1054| r1054_5(glval<int>) = VariableAddress[x] :
# 1054| r1054_6(int) = Load[x] : &:r1054_5, ~m?
# 1054| r1054_7(int) = Constant[1] :
# 1054| r1054_8(int) = Add : r1054_6, r1054_7
# 1054| mu1054_9(int) = Store[?] : &:r1054_4, r1054_8
# 1054| r1054_10(glval<int &>) = FieldAddress[j] : r1054_2
# 1054| r1054_11(glval<int>) = VariableAddress[r] :
# 1054| r1054_12(int &) = CopyValue : r1054_11
# 1054| mu1054_13(int &) = Store[?] : &:r1054_10, r1054_12
# 1054| r1054_14(glval<String &>) = FieldAddress[s] : r1054_2
# 1054| r1054_15(glval<String &>) = VariableAddress[s] :
# 1054| r1054_16(String &) = Load[s] : &:r1054_15, ~m?
# 1054| r1054_17(glval<String>) = CopyValue : r1054_16
# 1054| r1054_18(String &) = CopyValue : r1054_17
# 1054| mu1054_19(String &) = Store[?] : &:r1054_14, r1054_18
# 1054| r1054_20(glval<int>) = FieldAddress[x] : r1054_2
# 1054| r1054_21(glval<int>) = VariableAddress[x] :
# 1054| r1054_22(int) = Load[x] : &:r1054_21, ~m?
# 1054| mu1054_23(int) = Store[?] : &:r1054_20, r1054_22
# 1054| r1054_24(decltype([...](...){...})) = Load[#temp1054:22] : &:r1054_2, ~m?
# 1054| mu1054_25(decltype([...](...){...})) = Store[lambda_inits] : &:r1054_1, r1054_24
# 1055| r1055_1(glval<decltype([...](...){...})>) = VariableAddress[lambda_inits] :
Expand Down
4 changes: 2 additions & 2 deletions cpp/ql/test/library-tests/scopes/parents/parents.expected
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
| 0 | file://:0:0:0:0 | (global namespace) | file://:0:0:0:0 | __va_list_tag |
| 0 | file://:0:0:0:0 | (global namespace) | parents.cpp:2:11:2:13 | foo |
| 0 | file://:0:0:0:0 | (global namespace) | parents.cpp:18:3:18:3 | var |
| 0 | file://:0:0:0:0 | (global namespace) | parents.cpp:18:7:18:7 | var |
| 0 | file://:0:0:0:0 | (global namespace) | parents.cpp:18:3:18:5 | var |
| 0 | file://:0:0:0:0 | (global namespace) | parents.cpp:20:5:20:5 | g |
| 1 | file://:0:0:0:0 | __va_list_tag | file://:0:0:0:0 | fp_offset |
| 1 | file://:0:0:0:0 | __va_list_tag | file://:0:0:0:0 | gp_offset |
Expand All @@ -22,6 +22,6 @@
| 1 | parents.cpp:6:11:10:7 | { ... } | parents.cpp:7:9:9:9 | for(...;...;...) ... |
| 1 | parents.cpp:6:11:10:7 | { ... } | parents.cpp:7:33:9:9 | { ... } |
| 1 | parents.cpp:7:33:9:9 | { ... } | parents.cpp:8:15:8:15 | k |
| 1 | parents.cpp:18:7:18:7 | var | parents.cpp:17:19:17:19 | T |
| 1 | parents.cpp:18:3:18:5 | var | parents.cpp:17:19:17:19 | T |
| 1 | parents.cpp:20:5:20:5 | g | parents.cpp:20:9:24:1 | { ... } |
| 1 | parents.cpp:20:9:24:1 | { ... } | parents.cpp:21:16:21:16 | l |
4 changes: 2 additions & 2 deletions ...library-tests/templates/isfromtemplateinstantiation/isfromuninstantiatedtemplate.expected
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -121,8 +121,8 @@ isFromUninstantiatedTemplate
| isfromtemplateinstantiation.cpp:99:1:99:1 | return ... | isfromtemplateinstantiation.cpp:77:26:77:45 | AnotherTemplateClass<T> |
| isfromtemplateinstantiation.cpp:99:1:99:1 | return ... | isfromtemplateinstantiation.cpp:97:25:97:60 | myMethod2 |
| isfromtemplateinstantiation.cpp:99:1:99:1 | return ... | isfromtemplateinstantiation.cpp:97:52:97:52 | myMethod2 |
| isfromtemplateinstantiation.cpp:110:15:110:15 | definition of var_template | isfromtemplateinstantiation.cpp:110:15:110:15 | var_template |
| isfromtemplateinstantiation.cpp:110:15:110:15 | var_template | isfromtemplateinstantiation.cpp:110:15:110:15 | var_template |
| isfromtemplateinstantiation.cpp:110:3:110:14 | definition of var_template | isfromtemplateinstantiation.cpp:110:3:110:14 | var_template |
| isfromtemplateinstantiation.cpp:110:3:110:14 | var_template | isfromtemplateinstantiation.cpp:110:3:110:14 | var_template |
| isfromtemplateinstantiation.cpp:128:7:128:30 | AnotherTemplateClass<T *> | isfromtemplateinstantiation.cpp:128:7:128:30 | AnotherTemplateClass<T *> |
| isfromtemplateinstantiation.cpp:128:7:128:30 | definition of AnotherTemplateClass<T *> | isfromtemplateinstantiation.cpp:128:7:128:30 | AnotherTemplateClass<T *> |
| isfromtemplateinstantiation.cpp:129:6:129:6 | definition of f | isfromtemplateinstantiation.cpp:128:7:128:30 | AnotherTemplateClass<T *> |
Expand Down
6 changes: 3 additions & 3 deletions cpp/ql/test/library-tests/templates/variables/template_variables.expected
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9,19 +9,19 @@
| variables.cpp:2:13:2:13 | pi | variables.cpp:25:12:25:16 | T | |
| variables.cpp:2:13:2:13 | pi | variables.cpp:25:12:25:16, variables.cpp:37:16:37:24 | float | |
| variables.cpp:2:13:2:13 | pi | variables.cpp:25:12:25:16, variables.cpp:38:16:38:22 | int | |
| variables.cpp:2:16:2:16 | pi | | T | TemplateVariable |
| variables.cpp:2:13:2:14 | pi | | T | TemplateVariable |
| variables.cpp:5:23:5:37 | pi | | const char * | |
| variables.cpp:8:13:8:13 | multi_arg | variables.cpp:33:19:33:33 | S, T | |
| variables.cpp:8:13:8:13 | multi_arg | variables.cpp:33:19:33:33 | float, char | |
| variables.cpp:8:13:8:13 | multi_arg | variables.cpp:33:19:33:33 | short, long | |
| variables.cpp:8:13:8:13 | multi_arg | variables.cpp:40:23:40:60 | unsigned int, unsigned char | |
| variables.cpp:8:13:8:13 | multi_arg | variables.cpp:41:23:41:42 | int, char | |
| variables.cpp:8:23:8:23 | multi_arg | | S, T | TemplateVariable |
| variables.cpp:8:13:8:21 | multi_arg | | S, T | TemplateVariable |
| variables.cpp:11:3:11:3 | mutable_val | variables.cpp:26:3:26:16 | T | |
| variables.cpp:11:3:11:3 | mutable_val | variables.cpp:26:3:26:16 | float | |
| variables.cpp:11:3:11:3 | mutable_val | variables.cpp:26:3:26:16, variables.cpp:43:3:43:18 | int | |
| variables.cpp:11:3:11:3 | mutable_val | variables.cpp:44:3:44:19 | long | |
| variables.cpp:11:15:11:15 | mutable_val | | T | TemplateVariable |
| variables.cpp:11:3:11:13 | mutable_val | | T | TemplateVariable |
| variables.cpp:19:3:19:10 | bar | | T | TemplateVariable |
| variables.cpp:19:8:19:8 | bar | variables.cpp:27:3:27:13 | T | |
| variables.cpp:19:8:19:8 | bar | variables.cpp:27:3:27:13 | float | |
Expand Down
6 changes: 3 additions & 3 deletions cpp/ql/test/query-tests/Best Practices/SloppyGlobal/SloppyGlobal.expected
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,6 @@
| main.cpp:4:5:4:6 | ys | Poor global variable name 'ys'. Prefer longer, descriptive names for globals (eg. kMyGlobalConstant, not foo). |
| main.cpp:9:5:9:6 | v1 | Poor global variable name 'v1'. Prefer longer, descriptive names for globals (eg. kMyGlobalConstant, not foo). |
| main.cpp:10:5:10:6 | v2 | Poor global variable name 'v2'. Prefer longer, descriptive names for globals (eg. kMyGlobalConstant, not foo). |
| main.cpp:12:5:12:5 | v3 | Poor global variable name 'v3'. Prefer longer, descriptive names for globals (eg. kMyGlobalConstant, not foo). |
| main.cpp:14:5:14:5 | v4 | Poor global variable name 'v4'. Prefer longer, descriptive names for globals (eg. kMyGlobalConstant, not foo). |
| main.cpp:16:5:16:5 | v5 | Poor global variable name 'v5'. Prefer longer, descriptive names for globals (eg. kMyGlobalConstant, not foo). |
| main.cpp:12:3:12:4 | v3 | Poor global variable name 'v3'. Prefer longer, descriptive names for globals (eg. kMyGlobalConstant, not foo). |
| main.cpp:14:3:14:4 | v4 | Poor global variable name 'v4'. Prefer longer, descriptive names for globals (eg. kMyGlobalConstant, not foo). |
| main.cpp:16:3:16:4 | v5 | Poor global variable name 'v5'. Prefer longer, descriptive names for globals (eg. kMyGlobalConstant, not foo). |
1 change: 0 additions & 1 deletion cpp/ql/test/query-tests/Best Practices/Unused Entities/UnusedLocals/UnusedLocals.expected
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,6 @@
| code2.cpp:7:6:7:7 | v3 | Variable v3 is not used. |
| code2.cpp:11:16:11:17 | v7 | Variable v7 is not used. |
| code2.cpp:26:16:26:17 | v1 | Variable v1 is not used. |
| code2.cpp:27:16:27:17 | v2 | Variable v2 is not used. |
| code2.cpp:42:11:42:16 | myVar1 | Variable myVar1 is not used. |
| code2.cpp:64:7:64:8 | v3 | Variable v3 is not used. |
| code2.cpp:108:11:108:12 | v2 | Variable v2 is not used. |
Expand Down
Loading