| Issue |
83433
|
| Summary |
[clang-tidy] False positive bugprone-implicit-widening-of-multiplication-result when multiplying literals
|
| Labels |
clang-tidy
|
| Assignees |
|
| Reporter |
chrchr-github
|
~~~c++
long long f() {
return 1 * 2 * 3LL;
}
~~~
~~~
<source>:2:12: warning: performing an implicit widening conversion to type 'long long' of a multiplication performed in type 'int' [bugprone-implicit-widening-of-multiplication-result]
2 | return 1 * 2 * 3LL;
| ^
<source>:2:12: note: make conversion explicit to silence this warning
1 | long long f() {
2 | return 1 * 2 * 3LL;
| ^~~~~
| static_cast<long long>( )
<source>:2:12: note: perform multiplication in a wider type
2 | return 1 * 2 * 3LL;
| ^
| static_cast<long long>( )
~~~
Clearly there is no danger of overflow here. Also, the suggested fix of adding a `static_cast` on a literal is rather silly.
https://godbolt.org/z/vjhzEqMKc
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