From 8777d4408904ae184593014e71ff8fc0bb3bdecd Mon Sep 17 00:00:00 2001
From: Chris Mihelich <cmihelic@google.com>
Date: Tue, 4 Jun 2024 16:06:31 -0700
Subject: Demangle sizeof...(pack captured from an alias template), sP ... E.

PiperOrigin-RevId: 640314320
Change-Id: I1020879b354c75558d3dba064bb3ea13bd667227
---
 absl/debugging/internal/demangle_test.cc | 16 ++++++++++++++++
 1 file changed, 16 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 cb8b36d0..052c66bb 100644
--- a/absl/debugging/internal/demangle_test.cc
+++ b/absl/debugging/internal/demangle_test.cc
@@ -812,6 +812,22 @@ TEST(Demangle, SizeofPacks) {
   EXPECT_STREQ("g<>()", tmp);
 }
 
+TEST(Demangle, SizeofPackInvolvingAnAliasTemplate) {
+  char tmp[80];
+
+  // Source:
+  //
+  // template <class... T> using A = char[sizeof...(T)];
+  // template <class... U> void f(const A<U..., int>&) {}
+  // template void f<int>(const A<int, int>&);
+  //
+  // Full LLVM demangling of the instantiation of f:
+  //
+  // void f<int>(char const (&) [sizeof... (int, int)])
+  EXPECT_TRUE(Demangle("_Z1fIJiEEvRAsPDpT_iE_Kc", tmp, sizeof(tmp)));
+  EXPECT_STREQ("f<>()", tmp);
+}
+
 TEST(Demangle, Spaceship) {
   char tmp[80];
 
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