[PATCH] D117359: [scudo] Make Scudo compile for C++20

[Kostya Kortchinsky via Phabricator via llvm-commits]

cryptoad created this revision.
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In C++20 compound assignment to volatile (here `LocalData[I]++`) is
deprecated, so `mutex_test.cpp` fails to compile.

Simply changing it to `LocalData[I] = LocalData[I] + 1` fixes it.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D117359

Files:
  compiler-rt/lib/scudo/standalone/tests/mutex_test.cpp


Index: compiler-rt/lib/scudo/standalone/tests/mutex_test.cpp
===================================================================
--- compiler-rt/lib/scudo/standalone/tests/mutex_test.cpp
+++ compiler-rt/lib/scudo/standalone/tests/mutex_test.cpp
@@ -43,7 +43,7 @@
   void backoff() {
     volatile T LocalData[Size] = {};
     for (scudo::u32 I = 0; I < Size; I++) {
-      LocalData[I]++;
+      LocalData[I] = LocalData[I] + 1;
       EXPECT_EQ(LocalData[I], 1U);
     }
   }


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