[PATCH] D91495: [clang-tidy] false-positive for bugprone-redundant-branch-condition in case of passed-by-ref params

[Aaron Ballman via Phabricator via cfe-commits]

aaron.ballman added a comment.

Thank you for working on this!



================
Comment at: 
clang-tools-extra/test/clang-tidy/checkers/bugprone-redundant-branch-condition.cpp:10
+bool tryToExtinguish(bool&);
+bool tryToExtinguishByVal(bool &);
 void tryPutFireOut();
----------------
Did you mean for the parameter to be a reference?


================
Comment at: 
clang-tools-extra/test/clang-tidy/checkers/bugprone-redundant-branch-condition.cpp:963
+  if (tryToExtinguishByVal(isSet) && isSet) {
+    if (tryToExtinguishByVal(isSet) && isSet) {
+      // NO-MESSAGE: fire may have been extinguished
----------------
FWIW, I would expect this one to be diagnosed if the call really was byval 
instead of byref.


================
Comment at: 
clang-tools-extra/test/clang-tidy/checkers/bugprone-redundant-branch-condition.cpp:968
+  }
+}
+
----------------
Another test that would be interesting is:
```
if (tryToExtinguish(isSet) && isSet) {
  if (tryToExtinguishByVal(isSet) && isSet) { // Dupe check of isSet should be 
diagnosed
    scream();
  }
}

if (tryToExtinguishByVal(isSet) && isSet) {
  if (tryToExtinguish(isSet) && isSet) { // Ok
    scream();
  }
}
```


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D91495/new/

https://reviews.llvm.org/D91495

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