mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Boaz Brickner
2cb0df42e0
This shows that `inline` is ignored and the function definition is not
generated.
Demo:
```c++
// hello_world.h
inline void hello_world() {}
```
```carbon
// main.carbon
library "Main";
import Cpp library "hello_world.h";
fn Run() -> i32 {
Cpp.hello_world();
return 0;
}
```
```shell
$ bazel-bin/toolchain/carbon compile main.carbon
$ bazel-bin/toolchain/carbon link main.o --output=demo
ld.lld: error: undefined symbol: hello_world()
>>> referenced by main.carbon:8
>>> main.o:(main)
error: linker command failed with exit code 1 (use -v to see invocation)
```
Part of #5405.
94 lines
3.8 KiB
Plaintext
94 lines
3.8 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lower/testdata/interop/cpp/function_decl.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lower/testdata/interop/cpp/function_decl.carbon
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// ============================================================================
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// function_decl
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// ============================================================================
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// --- function_decl.h
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void foo();
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// --- import_function_decl.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "function_decl.h";
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fn MyF() {
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Cpp.foo();
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}
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// ============================================================================
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// inline_function_decl
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// ============================================================================
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// --- inline_function_decl.h
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inline void foo() {}
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// --- todo_import_inline_function_decl.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "inline_function_decl.h";
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fn MyF() {
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// TODO: This should generate the definition of the inline function `foo()`.
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Cpp.foo();
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}
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// CHECK:STDOUT: ; ModuleID = 'import_function_decl.carbon'
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// CHECK:STDOUT: source_filename = "import_function_decl.carbon"
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// CHECK:STDOUT:
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// CHECK:STDOUT: define void @_CMyF.Main() !dbg !4 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_Z3foov(), !dbg !7
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// CHECK:STDOUT: ret void, !dbg !8
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: declare void @_Z3foov()
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// CHECK:STDOUT:
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// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
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// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
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// CHECK:STDOUT:
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// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
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// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
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// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
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// CHECK:STDOUT: !3 = !DIFile(filename: "import_function_decl.carbon", directory: "")
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// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "MyF", linkageName: "_CMyF.Main", scope: null, file: !3, line: 6, type: !5, spFlags: DISPFlagDefinition, unit: !2)
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// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
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// CHECK:STDOUT: !6 = !{}
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// CHECK:STDOUT: !7 = !DILocation(line: 7, column: 3, scope: !4)
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// CHECK:STDOUT: !8 = !DILocation(line: 6, column: 1, scope: !4)
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// CHECK:STDOUT: ; ModuleID = 'todo_import_inline_function_decl.carbon'
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// CHECK:STDOUT: source_filename = "todo_import_inline_function_decl.carbon"
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// CHECK:STDOUT:
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// CHECK:STDOUT: define void @_CMyF.Main() !dbg !4 {
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// CHECK:STDOUT: entry:
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// CHECK:STDOUT: call void @_Z3foov(), !dbg !7
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// CHECK:STDOUT: ret void, !dbg !8
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: declare void @_Z3foov()
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// CHECK:STDOUT:
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// CHECK:STDOUT: !llvm.module.flags = !{!0, !1}
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// CHECK:STDOUT: !llvm.dbg.cu = !{!2}
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// CHECK:STDOUT:
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// CHECK:STDOUT: !0 = !{i32 7, !"Dwarf Version", i32 5}
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// CHECK:STDOUT: !1 = !{i32 2, !"Debug Info Version", i32 3}
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// CHECK:STDOUT: !2 = distinct !DICompileUnit(language: DW_LANG_C, file: !3, producer: "carbon", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
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// CHECK:STDOUT: !3 = !DIFile(filename: "todo_import_inline_function_decl.carbon", directory: "")
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// CHECK:STDOUT: !4 = distinct !DISubprogram(name: "MyF", linkageName: "_CMyF.Main", scope: null, file: !3, line: 6, type: !5, spFlags: DISPFlagDefinition, unit: !2)
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// CHECK:STDOUT: !5 = !DISubroutineType(types: !6)
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// CHECK:STDOUT: !6 = !{}
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// CHECK:STDOUT: !7 = !DILocation(line: 8, column: 3, scope: !4)
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// CHECK:STDOUT: !8 = !DILocation(line: 6, column: 1, scope: !4)
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