From a3c25aec21595adf6b1e16f2209fafd39c8e7942 Mon Sep 17 00:00:00 2001
From: Chris Mihelich <cmihelic@google.com>
Date: Thu, 23 May 2024 11:21:54 -0700
Subject: Demangle C++ sZ encodings (sizeof...(pack)).

PiperOrigin-RevId: 636615840
Change-Id: I34f584ea0c6603a0781e874d683b516de94c6928
---
 absl/debugging/internal/demangle_test.cc | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'absl/debugging/internal/demangle_test.cc')

diff --git a/absl/debugging/internal/demangle_test.cc b/absl/debugging/internal/demangle_test.cc
index 9db79e64..0044d420 100644
--- a/absl/debugging/internal/demangle_test.cc
+++ b/absl/debugging/internal/demangle_test.cc
@@ -329,6 +329,26 @@ TEST(Demangle, SubobjectAddresses) {
   EXPECT_STREQ("f<>()", tmp);
 }
 
+TEST(Demangle, SizeofPacks) {
+  char tmp[80];
+
+  // template <std::size_t i> struct S {};
+  //
+  // template <class... T> auto f(T... p) -> S<sizeof...(T)> { return {}; }
+  // template auto f<int, long>(int, long) -> S<2>;
+  //
+  // template <class... T> auto g(T... p) -> S<sizeof...(p)> { return {}; }
+  // template auto g<int, long>(int, long) -> S<2>;
+
+  // S<sizeof...(int, long)> f<int, long>(int, long)
+  EXPECT_TRUE(Demangle("_Z1fIJilEE1SIXsZT_EEDpT_", tmp, sizeof(tmp)));
+  EXPECT_STREQ("f<>()", tmp);
+
+  // S<sizeof... (fp)> g<int, long>(int, long)
+  EXPECT_TRUE(Demangle("_Z1gIJilEE1SIXsZfp_EEDpT_", tmp, sizeof(tmp)));
+  EXPECT_STREQ("g<>()", tmp);
+}
+
 // Test one Rust symbol to exercise Demangle's delegation path.  Rust demangling
 // itself is more thoroughly tested in demangle_rust_test.cc.
 TEST(Demangle, DelegatesToDemangleRustSymbolEncoding) {
-- 
cgit v1.2.3