[PATCH] D121715: [Clang] Fix an unused-but-set-variable warning with volatile variable

[Aaron Ballman via Phabricator via cfe-commits]

aaron.ballman added inline comments.


================
Comment at: clang/lib/Sema/SemaExprCXX.cpp:7925
   DeclRefExpr *LHS = nullptr;
+  bool IsComponentAssign = false;
   if (BinaryOperator *BO = dyn_cast<BinaryOperator>(E)) {
----------------



================
Comment at: clang/test/Sema/warn-unused-but-set-variables.c:35
+  // volatile variable k is used, no warning.
+  volatile int k = 0;
+  for (int i = 0; i < 1000; i++)
----------------
I'd like to see another test:
```
typedef volatile int volint;
volint l = 0;
l += 1; // no warning
```


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D121715/new/

https://reviews.llvm.org/D121715