[PATCH] D91037: [clang-tidy] Fix crash in bugprone-redundant-branch-condition on ExprWithCleanups

[Zinovy Nis via Phabricator via cfe-commits]

zinovy.nis added inline comments.


================
Comment at: clang-tools-extra/test/clang-tidy/checkers/bugprone-redundant-branch-condition.cpp:1092
+      // CHECK-MESSAGES: :[[@LINE-1]]:5: warning: redundant condition 'isSet' [bugprone-redundant-branch-condition]
+      // CHECK-FIXES: {{isSet}}
+    }
----------------
aaron.ballman wrote:
> zinovy.nis wrote:
> > aaron.ballman wrote:
> > > There's not a whole lot of context for FileCheck to determine if it's been correctly applied or not (same below) -- for instance, won't this pass even if no changes are applied because FileCheck is still going to find `isSet` in the file?
> > Thanks. Fixed.
> Maybe it's just early in the morning for me, but... I was expecting the transformation to be:
> ```
> if (RetT::Test(isSet).Ok() && isSet) {
>   if (RetT::Test(isSet).Ok() && isSet) {
>   }
> }
> ```
> turns into
> ```
> if (RetT::Test(isSet).Ok() && isSet) {
> }
> ```
> Why does it remove the `&& isSet` instead? That seems like it's changing the logic here from `if (true && false)` to `if (true)`.
IMO it's correct.
`isSet` cannot change its value between `if`s while `RetT::Test(isSet).Ok()` can.
So we don't need to re-evaluate `isSet` and need to re-evaluate `RetT::Test(isSet).Ok()` only.



> That seems like it's changing the logic here from if (true && false) to if (true).


As I understand only the second `if` is transformed.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D91037/new/

https://reviews.llvm.org/D91037