xref: /llvm-project/clang/test/ClangScanDeps/optimize-vfs-leak.m (revision 68eb3b202f30a1c3f2575f44b9d16365258e66b6) 
1// This test checks that VFS usage doesn't leak between modules.
2
3// RUN: rm -rf %t && split-file %s %t
4// RUN: sed -e "s|DIR|%/t|g" %t/build/cdb.json.in > %t/build/cdb.json
5// RUN: sed -e "s|DIR|%/t|g" %t/build/vfs.yaml.in > %t/build/vfs.yaml
6// RUN: clang-scan-deps -compilation-database %t/build/cdb.json \
7// RUN:   -format experimental-full --optimize-args=vfs > %t/deps.json
8// RUN: cat %t/deps.json | sed 's:\\\\\?:/:g' | FileCheck %s -DPREFIX=%/t
9
10// CHECK:      {
11// CHECK-NEXT:   "modules": [
12// CHECK-NEXT:     {
13// CHECK-NEXT:       "clang-module-deps": [
14// CHECK-NEXT:         {
15// CHECK-NEXT:           "context-hash": "{{.*}}",
16// CHECK-NEXT:           "module-name": "B"
17// CHECK-NEXT:         },
18// CHECK-NEXT:         {
19// CHECK-NEXT:           "context-hash": "{{.*}}",
20// CHECK-NEXT:           "module-name": "C"
21// CHECK-NEXT:         }
22// CHECK-NEXT:       ],
23// CHECK-NEXT:       "clang-modulemap-file": "[[PREFIX]]/moduleA/module.modulemap",
24// CHECK-NEXT:       "command-line": [
25// Module A needs the VFS overlay because its dependency, module B, needs it.
26// CHECK:              "-ivfsoverlay"
27// CHECK-NEXT:         "[[PREFIX]]/build/vfs.yaml"
28// CHECK:            ],
29// CHECK-NEXT:       "context-hash": "{{.*}}",
30// CHECK-NEXT:       "file-deps": [
31// CHECK:            ],
32// CHECK-NEXT:       "link-libraries": [],
33// CHECK-NEXT:       "name": "A"
34// CHECK-NEXT:     },
35// CHECK-NEXT:     {
36// CHECK-NEXT:       "clang-module-deps": [],
37// CHECK-NEXT:       "clang-modulemap-file": "[[PREFIX]]/moduleB/module.modulemap",
38// CHECK-NEXT:       "command-line": [
39// Module B needs the VFS overlay because it provides the header referred to by the module map.
40// CHECK:              "-ivfsoverlay"
41// CHECK-NEXT:         "[[PREFIX]]/build/vfs.yaml"
42// CHECK:            ],
43// CHECK-NEXT:       "context-hash": "{{.*}}",
44// CHECK-NEXT:       "file-deps": [
45// CHECK:            ],
46// CHECK-NEXT:       "link-libraries": [],
47// CHECK-NEXT:       "name": "B"
48// CHECK-NEXT:     },
49// CHECK-NEXT:     {
50// CHECK-NEXT:       "clang-module-deps": [],
51// CHECK-NEXT:       "clang-modulemap-file": "[[PREFIX]]/moduleC/module.modulemap",
52// CHECK-NEXT:       "command-line": [
53// Module C doesn't need the VFS overlay.
54// CHECK-NOT:          "-ivfsoverlay"
55// CHECK:            ],
56// CHECK-NEXT:       "context-hash": "{{.*}}",
57// CHECK-NEXT:       "file-deps": [
58// CHECK:            ],
59// CHECK-NEXT:       "link-libraries": [],
60// CHECK-NEXT:       "name": "C"
61// CHECK-NEXT:     }
62// CHECK-NEXT:   ],
63// CHECK-NEXT:   "translation-units": [
64// CHECK:        ]
65// CHECK:      }
66
67//--- build/cdb.json.in
68[{
69  "directory": "DIR",
70  "command": "clang -c DIR/tu.m -I DIR/moduleA -I DIR/moduleB -I DIR/moduleC -fmodules -fmodules-cache-path=DIR/cache -fimplicit-module-maps -ivfsoverlay DIR/build/vfs.yaml",
71  "file": "DIR/tu.m"
72}]
73
74//--- build/vfs.yaml.in
75{
76  "version": 0,
77  "case-sensitive": "false",
78  "roots": [
79    {
80      "contents": [
81        {
82          "external-contents": "DIR/build/B.h",
83          "name": "B.h",
84          "type": "file"
85        }
86      ],
87      "name": "DIR/moduleB",
88      "type": "directory"
89    }
90  ]
91}
92
93//--- tu.m
94@import A;
95
96//--- moduleA/module.modulemap
97module A { header "A.h" }
98//--- moduleA/A.h
99@import B;
100@import C;
101
102//--- moduleB/module.modulemap
103module B { header "B.h" }
104//--- build/B.h
105
106//--- moduleC/module.modulemap
107module C { header "C.h" }
108//--- moduleC/C.h
109