From 9140cc7b19ee1eddde576ff18d486b6e7a3f6170 Mon Sep 17 00:00:00 2001
From: Chris Mihelich <cmihelic@google.com>
Date: Fri, 7 Jun 2024 12:27:00 -0700
Subject: Demangle complex floating-point literals.

PiperOrigin-RevId: 641324572
Change-Id: Ie266da9c8c702e62b89352d64870fb41d2ea76c3
---
 absl/debugging/internal/demangle_test.cc | 19 +++++++++++++++++++
 1 file changed, 19 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 9100d5f1..111e895c 100644
--- a/absl/debugging/internal/demangle_test.cc
+++ b/absl/debugging/internal/demangle_test.cc
@@ -641,6 +641,25 @@ TEST(Demangle, StringLiterals) {
   EXPECT_STREQ("f<>()", tmp);
 }
 
+TEST(Demangle, ComplexFloatingPointLiterals) {
+  char tmp[80];
+
+  // Source (use g++ -fext-numeric-literals to compile):
+  //
+  // using C = double _Complex;
+  // template <class T> void f(char (&)[sizeof(C{sizeof(T)} + 4.0j)]) {}
+  // template void f<int>(char (&)[sizeof(C{sizeof(int)} + 4.0j)]);
+  //
+  // GNU demangling:
+  //
+  // void f<int>(char (&) [sizeof (double _Complex{sizeof (int)}+
+  // ((double _Complex)0000000000000000_4010000000000000))])
+  EXPECT_TRUE(Demangle(
+      "_Z1fIiEvRAszpltlCdstT_ELS0_0000000000000000_4010000000000000E_c",
+      tmp, sizeof(tmp)));
+  EXPECT_STREQ("f<>()", tmp);
+}
+
 TEST(Demangle, GlobalInitializers) {
   char tmp[80];
 
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