[clang] 0e0ea9f - [analyzer][CTU][NFC] Add an extra regression test

[Balazs Benics via cfe-commits]

Author: Balazs Benics
Date: 2021-03-10T12:42:24+01:00
New Revision: 0e0ea9ffb8027b2e785b383d66b06bbd92dc7a46

URL: https://github.com/llvm/llvm-project/commit/0e0ea9ffb8027b2e785b383d66b06bbd92dc7a46
DIFF: https://github.com/llvm/llvm-project/commit/0e0ea9ffb8027b2e785b383d66b06bbd92dc7a46.diff

LOG: [analyzer][CTU][NFC] Add an extra regression test

Before `bc713f6a004723d1325bc16e1efc32d0ac82f939` landed, the analyzer
crashed on this reduced example.
It seems important to have bot `ctu` and `-analyzer-opt-analyze-headers`
enabled in the example.

This test file ensures that no regression happens in the future in this regard.

Reviewed By: martong, NoQ

Differential Revision: https://reviews.llvm.org/D96586

Added: 
    clang/test/Analysis/Inputs/ctu-inherited-default-ctor-other.cpp
    clang/test/Analysis/ctu-inherited-default-ctor.cpp

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/clang/test/Analysis/Inputs/ctu-inherited-default-ctor-other.cpp b/clang/test/Analysis/Inputs/ctu-inherited-default-ctor-other.cpp
new file mode 100644
index 000000000000..b529f416999d
--- /dev/null
+++ b/clang/test/Analysis/Inputs/ctu-inherited-default-ctor-other.cpp
@@ -0,0 +1,27 @@
+namespace llvm {
+template <int, typename...>
+class impl;
+// basecase
+template <int n>
+class impl<n> {};
+// recursion
+template <int n, typename T, typename... TS>
+class impl<n, T, TS...> : impl<n + 1, TS...> {
+  using child = impl<n + 1, TS...>;
+  using child::child; // no-crash
+  impl(T);
+};
+template <typename... TS>
+class container : impl<0, TS...> {};
+} // namespace llvm
+namespace clang {
+class fun {
+  llvm::container<int, float> k;
+  fun() {}
+};
+class DeclContextLookupResult {
+  static int *const SingleElementDummyList;
+};
+} // namespace clang
+using namespace clang;
+int *const DeclContextLookupResult::SingleElementDummyList = nullptr;

diff  --git a/clang/test/Analysis/ctu-inherited-default-ctor.cpp b/clang/test/Analysis/ctu-inherited-default-ctor.cpp
new file mode 100644
index 000000000000..e3e7744e493c
--- /dev/null
+++ b/clang/test/Analysis/ctu-inherited-default-ctor.cpp
@@ -0,0 +1,28 @@
+// Should not crash with '-analyzer-opt-analyze-headers' option during CTU analysis.
+//
+// RUN: rm -r %t && mkdir -p %t/ctudir
+// RUN: %clang_cc1 -std=c++14 -triple x86_64-pc-linux-gnu \
+// RUN:   -emit-pch -o %t/ctudir/ctu-inherited-default-ctor-other.cpp.ast \
+// RUN:    %S/Inputs/ctu-inherited-default-ctor-other.cpp
+// RUN: echo "c:@N at clang@S at DeclContextLookupResult@SingleElementDummyList ctu-inherited-default-ctor-other.cpp.ast" \
+// RUN:   > %t/ctudir/externalDefMap.txt
+//
+// RUN: %clang_analyze_cc1 -std=c++14 -triple x86_64-pc-linux-gnu \
+// RUN:   -analyzer-opt-analyze-headers \
+// RUN:   -analyzer-checker=core \
+// RUN:   -analyzer-config experimental-enable-naive-ctu-analysis=true \
+// RUN:   -analyzer-config ctu-dir=%t/ctudir \
+// RUN:   -analyzer-config display-ctu-progress=true \
+// RUN:   -verify %s 2>&1 | FileCheck %s
+//
+// expected-no-diagnostics
+//
+// CHECK: CTU loaded AST file: ctu-inherited-default-ctor-other.cpp.ast
+
+namespace clang {}
+namespace llvm {}
+namespace clang {
+class DeclContextLookupResult {
+  static int *const SingleElementDummyList;
+};
+} // namespace clang