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-rw-r--r--test/CodeGenCXX/castexpr-basepathsize-threshold.cpp27
1 files changed, 27 insertions, 0 deletions
diff --git a/test/CodeGenCXX/castexpr-basepathsize-threshold.cpp b/test/CodeGenCXX/castexpr-basepathsize-threshold.cpp
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index 0000000000000..d5c1f603ff3fb
--- /dev/null
+++ b/test/CodeGenCXX/castexpr-basepathsize-threshold.cpp
@@ -0,0 +1,27 @@
+// RUN: %clang_cc1 %s -emit-llvm -o -
+
+// https://bugs.llvm.org/show_bug.cgi?id=38356
+// We only check that we do not crash.
+
+template <typename a, a b(unsigned), int c, unsigned...>
+struct d : d<a, b, c - 1> {};
+template <typename a, a b(unsigned), unsigned... e>
+struct d<a, b, 0, e...> {
+ a f[0];
+};
+struct g {
+ static g h(unsigned);
+};
+struct i {
+ void j() const;
+ // Current maximum depth of recursive template instantiation is 1024,
+ // thus, this \/ threshold value is used here. BasePathSize in CastExpr might
+ // not fit it, so we are testing that we do fit it.
+ // If -ftemplate-depth= is provided, larger values (4096 and up) cause crashes
+ // elsewhere.
+ d<g, g::h, (1U << 10U) - 2U> f;
+};
+void i::j() const {
+ const void *k{f.f};
+ (void)k;
+}