https://gcc.gnu.org/g:eefa4c06483f95f5076687ed6aae5c6001731164
commit r14-10208-geefa4c06483f95f5076687ed6aae5c6001731164
Author: Jonathan Wakely <jwak...@redhat.com>
Date: Tue May 14 14:32:23 2024 +0100
libstdc++: Guard dynamic_cast use in src/c++23/print.cc [PR115015]
Do not use dynamic_cast unconditionally, in case libstdc++ is built with
-fno-rtti.
libstdc++-v3/ChangeLog:
PR libstdc++/115015
* src/c++23/print.cc (__open_terminal(streambuf*)) [!__cpp_rtti]:
Do not use dynamic_cast.
Diff:
---
libstdc++-v3/src/c++23/print.cc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libstdc++-v3/src/c++23/print.cc b/libstdc++-v3/src/c++23/print.cc
index aceca6f9139b..99a19cd45002 100644
--- a/libstdc++-v3/src/c++23/print.cc
+++ b/libstdc++-v3/src/c++23/print.cc
@@ -87,7 +87,7 @@ namespace
void*
__open_terminal(std::streambuf* sb)
{
-#ifndef _GLIBCXX_USE_STDIO_PURE
+#if ! defined _GLIBCXX_USE_STDIO_PURE && defined __cpp_rtti
using namespace __gnu_cxx;
if (auto fb = dynamic_cast<stdio_sync_filebuf<char>*>(sb))
