[clang] [StaticAnalyzer] Fix tryExpandAsInteger's failures on PCH macros (PR #142722)

[Balazs Benics via cfe-commits]

================
@@ -0,0 +1,45 @@
+// RUN: rm -rf %t
+// RUN: mkdir -p %t
+// RUN: split-file %s %t
+
+// RUN: %clang_cc1 -x c++ -triple x86_64-apple-macosx10.15.0 -emit-pch -o 
%t/header.pch %t/header.h
+// RUN: %clang_analyze_cc1 -triple x86_64-apple-macosx10.15.0 -include-pch 
%t/header.pch \
+// RUN:   -analyzer-checker=core,apiModeling,unix.StdCLibraryFunctions -verify 
%t/main.cpp
+//
+// RUN: %clang_cc1 -x c++ -emit-pch -o %t/header.pch %t/header.h
+// RUN: %clang_analyze_cc1 -include-pch %t/header.pch \
+// RUN:   -analyzer-checker=core,apiModeling,unix.StdCLibraryFunctions -verify 
%t/main.cpp
----------------
steakhal wrote:

```suggestion
// DEFINE: %{emit-pch-action} = \
// DEFINE:   %clang_cc1 -x c++ -emit-pch -o %t/header.pch %t/header.h

// DEFINE: %{analyze-action} = \
// DEFINE:   %clang_analyze_cc1 -include-pch %t/header.pch \
// DEFINE:   -analyzer-checker=core,apiModeling,unix.StdCLibraryFunctions \
// DEFINE:   -verify %t/main.cpp

// RUN: %{emit-pch-action} -triple x86_64-apple-macosx10.15.0
// RUN: %{analyze-action}  -triple x86_64-apple-macosx10.15.0
// RUN: %{emit-pch-action}
// RUN: %{analyze-action}
```

https://github.com/llvm/llvm-project/pull/142722
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