[clang] [clang] Fix crash 'Cannot get layout of forward declarations' during CTU static analysis (PR #156056)

[Balázs Kéri via cfe-commits]

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@@ -0,0 +1,43 @@
+// RUN: rm -rf %t
+// RUN: mkdir -p %t
+// RUN: split-file %s %t
+
+// RUN: %clang_cc1 -emit-pch -o %t/import.c.ast %t/import.c
+
+// RUN: %clang_extdef_map -- -x c %t/import.c >> %t/externalDefMap.txt
+// RUN: sed -i'' 's/$/.ast/' %t/externalDefMap.txt
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balazske wrote:

Is it better to use the `perl` command from that page?

https://github.com/llvm/llvm-project/pull/156056