llvm-project/clang/test/Modules/cxx20-hu-04.cpp

106 lines
2.7 KiB
C++

// Test macro preservation in C++20 Header Units.
// RUN: rm -rf %t
// RUN: mkdir -p %t
// RUN: split-file %s %t
// RUN: cd %t
// RUN: %clang_cc1 -std=c++20 -emit-header-unit -xc++-user-header hu-01.h \
// RUN: -o hu-01.pcm
// RUN: %clang_cc1 -std=c++20 -module-file-info hu-01.pcm | \
// RUN: FileCheck --check-prefix=CHECK-HU %s -DTDIR=%t
// RUN: %clang_cc1 -std=c++20 -emit-header-unit -xc++-user-header hu-02.h \
// RUN: -DFOO -fmodule-file=hu-01.pcm -o hu-02.pcm -Rmodule-import 2>&1 | \
// RUN: FileCheck --check-prefix=CHECK-IMP %s -DTDIR=%t
// RUN: %clang_cc1 -std=c++20 -module-file-info hu-02.pcm | \
// RUN: FileCheck --check-prefix=CHECK-HU2 %s -DTDIR=%t
// RUN: %clang_cc1 -std=c++20 -emit-module-interface importer-01.cpp \
// RUN: -fmodule-file=hu-02.pcm -o B.pcm -verify
// RUN: %clang_cc1 -std=c++20 -emit-module-interface importer-02.cpp \
// RUN: -fmodule-file=hu-02.pcm -o C.pcm -Rmodule-import 2>&1 | \
// RUN: FileCheck --check-prefix=CHECK-IMP-HU2 %s -DTDIR=%t
//--- hu-01.h
#ifndef __GUARD
#define __GUARD
int baz(int);
#define FORTYTWO 42
#define SHOULD_NOT_BE_DEFINED -1
#undef SHOULD_NOT_BE_DEFINED
#endif // __GUARD
// expected-no-diagnostics
// CHECK-HU: ====== C++20 Module structure ======
// CHECK-HU-NEXT: Header Unit './hu-01.h' is the Primary Module at index #1
//--- hu-02.h
export import "hu-01.h";
#if !defined(FORTYTWO) || FORTYTWO != 42
#error FORTYTWO missing in hu-02
#endif
#ifndef __GUARD
#error __GUARD missing in hu-02
#endif
#ifdef SHOULD_NOT_BE_DEFINED
#error SHOULD_NOT_BE_DEFINED is visible
#endif
#define KAP 6174
#ifdef FOO
#define FOO_BRANCH(X) (X) + 1
inline int foo(int x) {
if (x == FORTYTWO)
return FOO_BRANCH(x);
return FORTYTWO;
}
#else
#define BAR_BRANCH(X) (X) + 2
inline int bar(int x) {
if (x == FORTYTWO)
return BAR_BRANCH(x);
return FORTYTWO;
}
#endif
// CHECK-IMP: remark: importing module './hu-01.h' from 'hu-01.pcm'
// CHECK-HU2: ====== C++20 Module structure ======
// CHECK-HU2-NEXT: Header Unit './hu-02.h' is the Primary Module at index #2
// CHECK-HU2-NEXT: Exports:
// CHECK-HU2-NEXT: Header Unit './hu-01.h' is at index #1
// expected-no-diagnostics
//--- importer-01.cpp
export module B;
import "hu-02.h";
int success(int x) {
return foo(FORTYTWO + x + KAP);
}
int fail(int x) {
return bar(FORTYTWO + x + KAP); // expected-error {{use of undeclared identifier 'bar'}}
// expected-note@* {{'baz' declared here}}
}
//--- importer-02.cpp
export module C;
import "hu-02.h";
int success(int x) {
return foo(FORTYTWO + x + KAP);
}
// CHECK-IMP-HU2: remark: importing module './hu-02.h' from 'hu-02.pcm'
// CHECK-IMP-HU2: remark: importing module './hu-01.h' into './hu-02.h' from '[[TDIR]]{{[/\\]}}hu-01.pcm'