| Issue |
145628
|
| Summary |
[clang-tidy] [Modules] Avoid duplicated checkings
|
| Labels |
clang-tidy
|
| Assignees |
|
| Reporter |
ChuanqiXu9
|
Reproducer:
```
// RUN: rm -fr %t
// RUN: mkdir %t
// RUN: split-file %s %t
// RUN: mkdir %t/tmp
//
// RUN: %clang -std=c++20 -x c++-module %t/a.cpp --precompile -o %t/a.pcm
//
// RUN: %check_clang_tidy -std=c++20 -check-suffix=DEFAULT %t/a.cpp \
// RUN: cppcoreguidelines-narrowing-conversions %t/a.cpp -- \
// RUN: -config='{}'
// RUN: clang-tidy %t/use.cpp -fix --checks=-*,cppcoreguidelines-narrowing-conversions \
// RUN: -config={} -- \
// RUN: -fmodule-file=a=%t/a.pcm -std=c++20 -nostdinc++
//--- a.cpp
export module a;
export void most_narrowing_is_not_ok() {
int i;
long long ui;
i = ui;
// CHECK-MESSAGES-DEFAULT: :[[@LINE-1]]:7: warning: narrowing conversion from 'long long' to signed type 'int' is implementation-defined [cppcoreguidelines-narrowing-conversions]
}
//--- use.cpp
import a;
void use() {
most_narrowing_is_not_ok();
// CHECK-MESSAGES-DEFAULT:
}
```
In this example, we don't hope we see the warning for use.cpp. Concretely, we can save a lot of times avoid duplicated checkings.
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