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Robert Marsh
authored
Merge pull request #1926 from jbj/ir-dataflow-toString
C++: DataFlow::Node.toString consistency
2 parents 676e8a2 + c411143 commit dbe885f

6 files changed

Lines changed: 114 additions & 98 deletions

File tree

‎cpp/ql/src/semmle/code/cpp/dataflow/internal/DataFlowUtil.qll‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -182,7 +182,7 @@ class ImplicitParameterNode extends ParameterNode, TInstanceParameterNode {
182182

183183
override Type getType() { result = f.getDeclaringType() }
184184

185-
override string toString() { result = "`this` parameter in " + f.getName() }
185+
override string toString() { result = "this" }
186186

187187
override Location getLocation() { result = f.getLocation() }
188188

‎cpp/ql/src/semmle/code/cpp/ir/dataflow/internal/DataFlowUtil.qll‎

Lines changed: 17 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -85,7 +85,11 @@ class Node extends TIRDataFlowNode {
8585
this.getLocation().hasLocationInfo(filepath, startline, startcolumn, endline, endcolumn)
8686
}
8787

88-
string toString() { result = instr.toString() }
88+
string toString() {
89+
// This predicate is overridden in subclasses. This default implementation
90+
// does not use `Instruction.toString` because that's expensive to compute.
91+
result = this.asInstruction().getOpcode().toString()
92+
}
8993
}
9094

9195
/**
@@ -107,6 +111,8 @@ class ExprNode extends Node {
107111
* expression may be a `Conversion`.
108112
*/
109113
Expr getConvertedExpr() { result = this.asConvertedExpr() }
114+
115+
override string toString() { result = this.asConvertedExpr().toString() }
110116
}
111117

112118
/**
@@ -123,6 +129,14 @@ class ParameterNode extends Node {
123129
predicate isParameterOf(Function f, int i) { f.getParameter(i) = instr.getParameter() }
124130

125131
Parameter getParameter() { result = instr.getParameter() }
132+
133+
override string toString() { result = instr.getParameter().toString() }
134+
}
135+
136+
private class ThisParameterNode extends Node {
137+
override InitializeThisInstruction instr;
138+
139+
override string toString() { result = "this" }
126140
}
127141

128142
/**
@@ -133,6 +147,8 @@ class UninitializedNode extends Node {
133147
override UninitializedInstruction instr;
134148

135149
LocalVariable getLocalVariable() { result = instr.getLocalVariable() }
150+
151+
override string toString() { result = this.getLocalVariable().toString() }
136152
}
137153

138154
/**

‎cpp/ql/test/library-tests/dataflow/dataflow-tests/test_ir.expected‎

Lines changed: 63 additions & 63 deletions
Original file line numberDiff line numberDiff line change
@@ -1,63 +1,63 @@
1-
| BarrierGuard.cpp:9:10:9:15 | Load: source | BarrierGuard.cpp:5:19:5:24 | InitializeParameter: source |
2-
| BarrierGuard.cpp:15:10:15:15 | Load: source | BarrierGuard.cpp:13:17:13:22 | InitializeParameter: source |
3-
| BarrierGuard.cpp:25:10:25:15 | Load: source | BarrierGuard.cpp:21:17:21:22 | InitializeParameter: source |
4-
| BarrierGuard.cpp:31:10:31:15 | Load: source | BarrierGuard.cpp:29:16:29:21 | InitializeParameter: source |
5-
| BarrierGuard.cpp:33:10:33:15 | Load: source | BarrierGuard.cpp:29:16:29:21 | InitializeParameter: source |
6-
| BarrierGuard.cpp:53:13:53:13 | Load: x | BarrierGuard.cpp:49:10:49:15 | Call: call to source |
7-
| BarrierGuard.cpp:55:13:55:13 | Load: x | BarrierGuard.cpp:49:10:49:15 | Call: call to source |
8-
| acrossLinkTargets.cpp:12:8:12:8 | Convert: (int)... | acrossLinkTargets.cpp:19:27:19:32 | Call: call to source |
9-
| acrossLinkTargets.cpp:12:8:12:8 | Load: x | acrossLinkTargets.cpp:19:27:19:32 | Call: call to source |
10-
| clang.cpp:18:8:18:19 | Convert: (const int *)... | clang.cpp:12:9:12:20 | InitializeParameter: sourceArray1 |
11-
| clang.cpp:18:8:18:19 | Load: sourceArray1 | clang.cpp:12:9:12:20 | InitializeParameter: sourceArray1 |
12-
| clang.cpp:37:10:37:11 | Load: m2 | clang.cpp:34:32:34:37 | Call: call to source |
13-
| clang.cpp:41:18:41:19 | Load: m2 | clang.cpp:39:42:39:47 | Call: call to source |
14-
| clang.cpp:45:17:45:18 | Load: m2 | clang.cpp:43:35:43:40 | Call: call to source |
15-
| dispatch.cpp:11:38:11:38 | Load: x | dispatch.cpp:37:19:37:24 | Call: call to source |
16-
| dispatch.cpp:11:38:11:38 | Load: x | dispatch.cpp:45:18:45:23 | Call: call to source |
17-
| dispatch.cpp:23:38:23:38 | Load: x | dispatch.cpp:33:18:33:23 | Call: call to source |
18-
| dispatch.cpp:23:38:23:38 | Load: x | dispatch.cpp:41:17:41:22 | Call: call to source |
19-
| dispatch.cpp:31:16:31:24 | Call: call to isSource1 | dispatch.cpp:22:37:22:42 | Call: call to source |
20-
| dispatch.cpp:32:16:32:24 | Call: call to isSource2 | dispatch.cpp:16:37:16:42 | Call: call to source |
21-
| dispatch.cpp:35:16:35:25 | Call: call to notSource1 | dispatch.cpp:9:37:9:42 | Call: call to source |
22-
| dispatch.cpp:36:16:36:25 | Call: call to notSource2 | dispatch.cpp:10:37:10:42 | Call: call to source |
23-
| dispatch.cpp:39:15:39:23 | Call: call to isSource1 | dispatch.cpp:22:37:22:42 | Call: call to source |
24-
| dispatch.cpp:40:15:40:23 | Call: call to isSource2 | dispatch.cpp:16:37:16:42 | Call: call to source |
25-
| dispatch.cpp:43:15:43:24 | Call: call to notSource1 | dispatch.cpp:9:37:9:42 | Call: call to source |
26-
| dispatch.cpp:44:15:44:24 | Call: call to notSource2 | dispatch.cpp:10:37:10:42 | Call: call to source |
27-
| test.cpp:7:8:7:9 | Load: t1 | test.cpp:6:12:6:17 | Call: call to source |
28-
| test.cpp:9:8:9:9 | Load: t1 | test.cpp:6:12:6:17 | Call: call to source |
29-
| test.cpp:10:8:10:9 | Load: t2 | test.cpp:6:12:6:17 | Call: call to source |
30-
| test.cpp:15:8:15:9 | Load: t2 | test.cpp:6:12:6:17 | Call: call to source |
31-
| test.cpp:26:8:26:9 | Load: t1 | test.cpp:6:12:6:17 | Call: call to source |
32-
| test.cpp:30:8:30:8 | Load: t | test.cpp:35:10:35:15 | Call: call to source |
33-
| test.cpp:31:8:31:8 | Load: c | test.cpp:36:13:36:18 | Call: call to source |
34-
| test.cpp:58:10:58:10 | Load: t | test.cpp:50:14:50:19 | Call: call to source |
35-
| test.cpp:71:8:71:9 | Load: x4 | test.cpp:66:30:66:36 | InitializeParameter: source1 |
36-
| test.cpp:76:8:76:9 | Load: u1 | test.cpp:75:7:75:8 | Uninitialized: definition of u1 |
37-
| test.cpp:84:8:84:18 | Load: ... ? ... : ... | test.cpp:83:7:83:8 | Uninitialized: definition of u2 |
38-
| test.cpp:86:8:86:9 | Load: i1 | test.cpp:83:7:83:8 | Uninitialized: definition of u2 |
39-
| test.cpp:90:8:90:14 | Load: source1 | test.cpp:89:28:89:34 | InitializeParameter: source1 |
40-
| test.cpp:92:8:92:14 | Load: source1 | test.cpp:89:28:89:34 | InitializeParameter: source1 |
41-
| test.cpp:110:10:110:12 | Load: (reference dereference) | test.cpp:109:9:109:14 | Call: call to source |
42-
| test.cpp:140:8:140:8 | Load: y | test.cpp:138:27:138:32 | Call: call to source |
43-
| test.cpp:144:8:144:8 | Load: s | test.cpp:151:33:151:38 | Call: call to source |
44-
| test.cpp:152:8:152:8 | Load: y | test.cpp:151:33:151:38 | Call: call to source |
45-
| test.cpp:157:8:157:8 | Load: x | test.cpp:164:34:164:39 | Call: call to source |
46-
| test.cpp:165:8:165:8 | Load: y | test.cpp:164:34:164:39 | Call: call to source |
47-
| test.cpp:178:8:178:8 | Load: y | test.cpp:171:11:171:16 | Call: call to source |
48-
| test.cpp:260:12:260:12 | Load: x | test.cpp:245:14:245:19 | Call: call to source |
49-
| test.cpp:266:12:266:12 | Load: x | test.cpp:265:22:265:27 | Call: call to source |
50-
| test.cpp:289:14:289:14 | Load: x | test.cpp:305:17:305:22 | Call: call to source |
51-
| test.cpp:318:7:318:7 | Load: x | test.cpp:314:4:314:9 | Call: call to source |
52-
| test.cpp:450:9:450:22 | CopyValue: (statement expression) | test.cpp:449:26:449:32 | InitializeParameter: source1 |
53-
| test.cpp:461:8:461:12 | Load: local | test.cpp:449:26:449:32 | InitializeParameter: source1 |
54-
| true_upon_entry.cpp:13:8:13:8 | Load: x | true_upon_entry.cpp:9:11:9:16 | Call: call to source |
55-
| true_upon_entry.cpp:21:8:21:8 | Load: x | true_upon_entry.cpp:17:11:17:16 | Call: call to source |
56-
| true_upon_entry.cpp:29:8:29:8 | Load: x | true_upon_entry.cpp:27:9:27:14 | Call: call to source |
57-
| true_upon_entry.cpp:39:8:39:8 | Load: x | true_upon_entry.cpp:33:11:33:16 | Call: call to source |
58-
| true_upon_entry.cpp:49:8:49:8 | Load: x | true_upon_entry.cpp:43:11:43:16 | Call: call to source |
59-
| true_upon_entry.cpp:57:8:57:8 | Load: x | true_upon_entry.cpp:54:11:54:16 | Call: call to source |
60-
| true_upon_entry.cpp:66:8:66:8 | Load: x | true_upon_entry.cpp:62:11:62:16 | Call: call to source |
61-
| true_upon_entry.cpp:78:8:78:8 | Load: x | true_upon_entry.cpp:70:11:70:16 | Call: call to source |
62-
| true_upon_entry.cpp:86:8:86:8 | Load: x | true_upon_entry.cpp:83:11:83:16 | Call: call to source |
63-
| true_upon_entry.cpp:105:8:105:8 | Load: x | true_upon_entry.cpp:98:11:98:16 | Call: call to source |
1+
| BarrierGuard.cpp:9:10:9:15 | source | BarrierGuard.cpp:5:19:5:24 | source |
2+
| BarrierGuard.cpp:15:10:15:15 | source | BarrierGuard.cpp:13:17:13:22 | source |
3+
| BarrierGuard.cpp:25:10:25:15 | source | BarrierGuard.cpp:21:17:21:22 | source |
4+
| BarrierGuard.cpp:31:10:31:15 | source | BarrierGuard.cpp:29:16:29:21 | source |
5+
| BarrierGuard.cpp:33:10:33:15 | source | BarrierGuard.cpp:29:16:29:21 | source |
6+
| BarrierGuard.cpp:53:13:53:13 | x | BarrierGuard.cpp:49:10:49:15 | call to source |
7+
| BarrierGuard.cpp:55:13:55:13 | x | BarrierGuard.cpp:49:10:49:15 | call to source |
8+
| acrossLinkTargets.cpp:12:8:12:8 | (int)... | acrossLinkTargets.cpp:19:27:19:32 | call to source |
9+
| acrossLinkTargets.cpp:12:8:12:8 | x | acrossLinkTargets.cpp:19:27:19:32 | call to source |
10+
| clang.cpp:18:8:18:19 | (const int *)... | clang.cpp:12:9:12:20 | sourceArray1 |
11+
| clang.cpp:18:8:18:19 | sourceArray1 | clang.cpp:12:9:12:20 | sourceArray1 |
12+
| clang.cpp:37:10:37:11 | m2 | clang.cpp:34:32:34:37 | call to source |
13+
| clang.cpp:41:18:41:19 | m2 | clang.cpp:39:42:39:47 | call to source |
14+
| clang.cpp:45:17:45:18 | m2 | clang.cpp:43:35:43:40 | call to source |
15+
| dispatch.cpp:11:38:11:38 | x | dispatch.cpp:37:19:37:24 | call to source |
16+
| dispatch.cpp:11:38:11:38 | x | dispatch.cpp:45:18:45:23 | call to source |
17+
| dispatch.cpp:23:38:23:38 | x | dispatch.cpp:33:18:33:23 | call to source |
18+
| dispatch.cpp:23:38:23:38 | x | dispatch.cpp:41:17:41:22 | call to source |
19+
| dispatch.cpp:31:16:31:24 | call to isSource1 | dispatch.cpp:22:37:22:42 | call to source |
20+
| dispatch.cpp:32:16:32:24 | call to isSource2 | dispatch.cpp:16:37:16:42 | call to source |
21+
| dispatch.cpp:35:16:35:25 | call to notSource1 | dispatch.cpp:9:37:9:42 | call to source |
22+
| dispatch.cpp:36:16:36:25 | call to notSource2 | dispatch.cpp:10:37:10:42 | call to source |
23+
| dispatch.cpp:39:15:39:23 | call to isSource1 | dispatch.cpp:22:37:22:42 | call to source |
24+
| dispatch.cpp:40:15:40:23 | call to isSource2 | dispatch.cpp:16:37:16:42 | call to source |
25+
| dispatch.cpp:43:15:43:24 | call to notSource1 | dispatch.cpp:9:37:9:42 | call to source |
26+
| dispatch.cpp:44:15:44:24 | call to notSource2 | dispatch.cpp:10:37:10:42 | call to source |
27+
| test.cpp:7:8:7:9 | t1 | test.cpp:6:12:6:17 | call to source |
28+
| test.cpp:9:8:9:9 | t1 | test.cpp:6:12:6:17 | call to source |
29+
| test.cpp:10:8:10:9 | t2 | test.cpp:6:12:6:17 | call to source |
30+
| test.cpp:15:8:15:9 | t2 | test.cpp:6:12:6:17 | call to source |
31+
| test.cpp:26:8:26:9 | t1 | test.cpp:6:12:6:17 | call to source |
32+
| test.cpp:30:8:30:8 | t | test.cpp:35:10:35:15 | call to source |
33+
| test.cpp:31:8:31:8 | c | test.cpp:36:13:36:18 | call to source |
34+
| test.cpp:58:10:58:10 | t | test.cpp:50:14:50:19 | call to source |
35+
| test.cpp:71:8:71:9 | x4 | test.cpp:66:30:66:36 | source1 |
36+
| test.cpp:76:8:76:9 | u1 | test.cpp:75:7:75:8 | u1 |
37+
| test.cpp:84:8:84:18 | ... ? ... : ... | test.cpp:83:7:83:8 | u2 |
38+
| test.cpp:86:8:86:9 | i1 | test.cpp:83:7:83:8 | u2 |
39+
| test.cpp:90:8:90:14 | source1 | test.cpp:89:28:89:34 | source1 |
40+
| test.cpp:92:8:92:14 | source1 | test.cpp:89:28:89:34 | source1 |
41+
| test.cpp:110:10:110:12 | (reference dereference) | test.cpp:109:9:109:14 | call to source |
42+
| test.cpp:140:8:140:8 | y | test.cpp:138:27:138:32 | call to source |
43+
| test.cpp:144:8:144:8 | s | test.cpp:151:33:151:38 | call to source |
44+
| test.cpp:152:8:152:8 | y | test.cpp:151:33:151:38 | call to source |
45+
| test.cpp:157:8:157:8 | x | test.cpp:164:34:164:39 | call to source |
46+
| test.cpp:165:8:165:8 | y | test.cpp:164:34:164:39 | call to source |
47+
| test.cpp:178:8:178:8 | y | test.cpp:171:11:171:16 | call to source |
48+
| test.cpp:260:12:260:12 | x | test.cpp:245:14:245:19 | call to source |
49+
| test.cpp:266:12:266:12 | x | test.cpp:265:22:265:27 | call to source |
50+
| test.cpp:289:14:289:14 | x | test.cpp:305:17:305:22 | call to source |
51+
| test.cpp:318:7:318:7 | x | test.cpp:314:4:314:9 | call to source |
52+
| test.cpp:450:9:450:22 | (statement expression) | test.cpp:449:26:449:32 | source1 |
53+
| test.cpp:461:8:461:12 | local | test.cpp:449:26:449:32 | source1 |
54+
| true_upon_entry.cpp:13:8:13:8 | x | true_upon_entry.cpp:9:11:9:16 | call to source |
55+
| true_upon_entry.cpp:21:8:21:8 | x | true_upon_entry.cpp:17:11:17:16 | call to source |
56+
| true_upon_entry.cpp:29:8:29:8 | x | true_upon_entry.cpp:27:9:27:14 | call to source |
57+
| true_upon_entry.cpp:39:8:39:8 | x | true_upon_entry.cpp:33:11:33:16 | call to source |
58+
| true_upon_entry.cpp:49:8:49:8 | x | true_upon_entry.cpp:43:11:43:16 | call to source |
59+
| true_upon_entry.cpp:57:8:57:8 | x | true_upon_entry.cpp:54:11:54:16 | call to source |
60+
| true_upon_entry.cpp:66:8:66:8 | x | true_upon_entry.cpp:62:11:62:16 | call to source |
61+
| true_upon_entry.cpp:78:8:78:8 | x | true_upon_entry.cpp:70:11:70:16 | call to source |
62+
| true_upon_entry.cpp:86:8:86:8 | x | true_upon_entry.cpp:83:11:83:16 | call to source |
63+
| true_upon_entry.cpp:105:8:105:8 | x | true_upon_entry.cpp:98:11:98:16 | call to source |

‎cpp/ql/test/library-tests/dataflow/fields/flow.expected‎

Lines changed: 9 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -78,15 +78,15 @@ edges
7878
| B.cpp:19:14:19:17 | box1 [elem2] | B.cpp:19:20:19:24 | elem2 |
7979
| C.cpp:18:12:18:18 | call to C [s1] | C.cpp:19:5:19:5 | c [s1] |
8080
| C.cpp:18:12:18:18 | call to C [s3] | C.cpp:19:5:19:5 | c [s3] |
81-
| C.cpp:19:5:19:5 | c [s1] | C.cpp:27:8:27:11 | `this` parameter in func [s1] |
82-
| C.cpp:19:5:19:5 | c [s3] | C.cpp:27:8:27:11 | `this` parameter in func [s3] |
81+
| C.cpp:19:5:19:5 | c [s1] | C.cpp:27:8:27:11 | this [s1] |
82+
| C.cpp:19:5:19:5 | c [s3] | C.cpp:27:8:27:11 | this [s3] |
8383
| C.cpp:22:9:22:22 | constructor init of field s1 [post-this] [s1] | C.cpp:18:12:18:18 | call to C [s1] |
8484
| C.cpp:22:12:22:21 | new | C.cpp:22:9:22:22 | constructor init of field s1 [post-this] [s1] |
8585
| C.cpp:24:5:24:8 | this [post update] [s3] | C.cpp:18:12:18:18 | call to C [s3] |
8686
| C.cpp:24:5:24:25 | ... = ... | C.cpp:24:5:24:8 | this [post update] [s3] |
8787
| C.cpp:24:16:24:25 | new | C.cpp:24:5:24:25 | ... = ... |
88-
| C.cpp:27:8:27:11 | `this` parameter in func [s1] | C.cpp:29:10:29:11 | this [s1] |
89-
| C.cpp:27:8:27:11 | `this` parameter in func [s3] | C.cpp:31:10:31:11 | this [s3] |
88+
| C.cpp:27:8:27:11 | this [s1] | C.cpp:29:10:29:11 | this [s1] |
89+
| C.cpp:27:8:27:11 | this [s3] | C.cpp:31:10:31:11 | this [s3] |
9090
| C.cpp:29:10:29:11 | this [s1] | C.cpp:29:10:29:11 | s1 |
9191
| C.cpp:31:10:31:11 | this [s3] | C.cpp:31:10:31:11 | s3 |
9292
| D.cpp:21:30:21:31 | b2 [box, elem] | D.cpp:22:10:22:11 | b2 [box, elem] |
@@ -117,8 +117,8 @@ edges
117117
| D.cpp:58:5:58:12 | this [post update] [boxfield, box, ... (3)] | D.cpp:59:5:59:7 | this [boxfield, box, ... (3)] |
118118
| D.cpp:58:5:58:27 | ... = ... | D.cpp:58:15:58:17 | box [post update] [elem] |
119119
| D.cpp:58:15:58:17 | box [post update] [elem] | D.cpp:58:5:58:12 | boxfield [post update] [box, elem] |
120-
| D.cpp:59:5:59:7 | this [boxfield, box, ... (3)] | D.cpp:63:8:63:10 | `this` parameter in f5b [boxfield, box, ... (3)] |
121-
| D.cpp:63:8:63:10 | `this` parameter in f5b [boxfield, box, ... (3)] | D.cpp:64:10:64:17 | this [boxfield, box, ... (3)] |
120+
| D.cpp:59:5:59:7 | this [boxfield, box, ... (3)] | D.cpp:63:8:63:10 | this [boxfield, box, ... (3)] |
121+
| D.cpp:63:8:63:10 | this [boxfield, box, ... (3)] | D.cpp:64:10:64:17 | this [boxfield, box, ... (3)] |
122122
| D.cpp:64:10:64:17 | boxfield [box, elem] | D.cpp:64:20:64:22 | box [elem] |
123123
| D.cpp:64:10:64:17 | this [boxfield, box, ... (3)] | D.cpp:64:10:64:17 | boxfield [box, elem] |
124124
| D.cpp:64:20:64:22 | box [elem] | D.cpp:64:25:64:28 | elem |
@@ -337,8 +337,8 @@ nodes
337337
| C.cpp:24:5:24:8 | this [post update] [s3] | semmle.label | this [post update] [s3] |
338338
| C.cpp:24:5:24:25 | ... = ... | semmle.label | ... = ... |
339339
| C.cpp:24:16:24:25 | new | semmle.label | new |
340-
| C.cpp:27:8:27:11 | `this` parameter in func [s1] | semmle.label | `this` parameter in func [s1] |
341-
| C.cpp:27:8:27:11 | `this` parameter in func [s3] | semmle.label | `this` parameter in func [s3] |
340+
| C.cpp:27:8:27:11 | this [s1] | semmle.label | this [s1] |
341+
| C.cpp:27:8:27:11 | this [s3] | semmle.label | this [s3] |
342342
| C.cpp:29:10:29:11 | s1 | semmle.label | s1 |
343343
| C.cpp:29:10:29:11 | this [s1] | semmle.label | this [s1] |
344344
| C.cpp:31:10:31:11 | s3 | semmle.label | s3 |
@@ -373,7 +373,7 @@ nodes
373373
| D.cpp:58:5:58:27 | ... = ... | semmle.label | ... = ... |
374374
| D.cpp:58:15:58:17 | box [post update] [elem] | semmle.label | box [post update] [elem] |
375375
| D.cpp:59:5:59:7 | this [boxfield, box, ... (3)] | semmle.label | this [boxfield, box, ... (3)] |
376-
| D.cpp:63:8:63:10 | `this` parameter in f5b [boxfield, box, ... (3)] | semmle.label | `this` parameter in f5b [boxfield, box, ... (3)] |
376+
| D.cpp:63:8:63:10 | this [boxfield, box, ... (3)] | semmle.label | this [boxfield, box, ... (3)] |
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| D.cpp:64:10:64:17 | boxfield [box, elem] | semmle.label | boxfield [box, elem] |
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| D.cpp:64:10:64:17 | this [boxfield, box, ... (3)] | semmle.label | this [boxfield, box, ... (3)] |
379379
| D.cpp:64:20:64:22 | box [elem] | semmle.label | box [elem] |

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