llvm-project/clang/test/Modules/Wsystem-headers-in-module.c
Ben Langmuir dc5cbba319 [clang][modules] Add -Wsystem-headers-in-module=
Add a way to enable -Wsystem-headers only for a specific module. This is
useful for validating a module that would otherwise not see system
header diagnostics without being flooded by diagnostics for unrelated
headers/modules. It's relatively common for a module to be marked
[system] but still wish to validate itself explicitly.

rdar://113401565

Differential Revision: https://reviews.llvm.org/D156948
2023-08-09 10:40:53 -07:00

33 lines
922 B
C

// Check that Wsystem-headers-in-module shows diagnostics in the named system
// module, but not in other system headers or modules.
// RUN: rm -rf %t
// RUN: split-file %s %t
// RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t/mcp \
// RUN: -isystem %t/sys %t/tu.c -fsyntax-only -Wextra-semi -Wsystem-headers-in-module=sys_mod \
// RUN: 2>&1 | FileCheck %s
// CHECK-NOT: warning:
// CHECK: sys_mod.h:2:7: warning: extra ';'
// CHECK-NOT: warning:
//--- sys/other_sys_header.h
int x;;
//--- sys_mod.h
#include "dependent_sys_mod.h"
int y;;
//--- other_sys_mod.h
int z;;
//--- dependent_sys_mod.h
int w;;
//--- module.modulemap
module sys_mod [system] { header "sys_mod.h" }
module other_sys_mod [system] { header "other_sys_mod.h" }
module dependent_sys_mod [system] { header "dependent_sys_mod.h" }
//--- tu.c
#include "sys_mod.h"
#include "other_sys_mod.h"
#include "other_sys_header.h"