[compiler-rt] [compiler-rt][rtsan] intercept fflush. (PR #121643)

[Chris Apple via llvm-commits]

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@@ -654,6 +654,19 @@ TEST_F(RtsanOpenedFileTest, FputsDiesWhenRealtime) {
   ExpectNonRealtimeSurvival(Func);
 }
 
+TEST_F(RtsanFileTest, FflushDiesWhenRealtime) {
+  FILE *f = fopen(GetTemporaryFilePath(), "w");
+  EXPECT_THAT(f, Ne(nullptr));
+  int r = fwrite("abc", 1, 3, f);
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cjappl wrote:

nit: Could have a more descriptive name `bytes_written`/`num_written`/`written` or similar

https://github.com/llvm/llvm-project/pull/121643