[clang] [clang] Forward `-fvalidate-ast-input-files-content` when loading an AST dump (PR #196298)

[Arseniy Zaostrovnykh via cfe-commits]

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@@ -0,0 +1,42 @@
+// RUN: rm -rf %t
+// RUN: mkdir -p %t
+// RUN: split-file %s %t
+
+// Step 1: Build PCH and defmap.
+// RUN: %clang_cc1 -x c -emit-pch -fvalidate-ast-input-files-content -o %t/other.c.ast %t/other.c
+// RUN: %clang_extdef_map %t/other.c -- -c -x c > %t/externalDefMap.tmp.txt
+// RUN: sed 's| .*other\.c| other.c.ast|' %t/externalDefMap.tmp.txt > %t/externalDefMap.txt
+
+// Step 2: Run CTU using the PCH - the division by zero is found via inlining.
+// RUN: %clang_cc1 -analyze \
+// RUN:   -fvalidate-ast-input-files-content \
+// RUN:   -analyzer-checker=core \
+// RUN:   -analyzer-config experimental-enable-naive-ctu-analysis=true \
+// RUN:   -analyzer-config ctu-dir=%t \
+// RUN:   -verify %t/main.c
+
+// Step 3: Advance mtime of the source from which PCH was built.
+// RUN: %python -c "import os, sys, time; os.utime(sys.argv[1], (time.time() + 120, time.time() + 120))" %t/other.c
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necto wrote:

Yeah, but it is different in that here I want to use it to deliberately set some non-now time, while month ago I just wanted to create an empty file

https://github.com/llvm/llvm-project/pull/196298