[clang] [analyzer] Suppress core.FixedAddressDereference reports with volatile pointee (PR #181644)

[Ziqing Luo via cfe-commits]

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@@ -50,3 +50,21 @@ void test4() {
   *x = 3; // expected-warning{{Dereference of a fixed address (loaded from variable 'x')}} \
           // expected-note{{Dereference of a fixed address (loaded from variable 'x')}}
 }
+
+void suppress_volatile_pointee(void) {
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ziqingluo-90 wrote:

nit: we could have a test for having a `volatile int *` variable holding a fixed value.  I'm sure it will work.  Just for better test coverage.

https://github.com/llvm/llvm-project/pull/181644