[compiler-rt] [compiler-rt][rtsan] fseek api interception. (PR #122163)

[Chris Apple via llvm-commits]

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@@ -453,6 +453,66 @@ TEST_F(RtsanFileTest, SetbufferDieWhenRealtime) {
 }
 #endif
 
+#if SANITIZER_INTERCEPT_FSEEK
+TEST_F(RtsanOpenedFileTest, FgetposDieWhenRealtime) {
+  auto Func = [this]() {
+    int pos = fgetpos(GetOpenFile());
+    ASSERT_THAT(pos, Eq(0));
+  };
+
+  ExpectRealtimeDeath(Func, MAYBE_APPEND_64("fgetpos"));
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cjappl wrote:

Where are the interceptors for fseek64, fgetpos64, ...64 etc? I'm surprised these tests pass on linux

https://github.com/llvm/llvm-project/pull/122163