[gdb/build] Fix build breaker with -std=c++11
When building with -std=c++11 I run into:
...
gdb/dwarf2/cooked-index.c: In member function \
‘void cooked_index::start_writing_index(dwarf2_per_bfd*)’:
gdb/dwarf2/cooked-index.c:469:10: error: lambda capture initializers only \
available with -std=c++14 or -std=gnu++14 [-Werror]
ctx = std::move (ctx)] ()
^~~
...
Fix this by capturing a copy instead when using -std=c++11:
...
= gdb::thread_pool::g_thread_pool->post_task ([this, per_bfd, ctx] ()
...
Tested by building with and without -stdc=++11 on x86_64-linux.
Reported-By: Tom Tromey <tom@tromey.com>
Reviewed-by: John Baldwin <jhb@FreeBSD.org>
diff --git a/gdb/dwarf2/cooked-index.c b/gdb/dwarf2/cooked-index.c
index df82e86..92ef0e3 100644
--- a/gdb/dwarf2/cooked-index.c
+++ b/gdb/dwarf2/cooked-index.c
@@ -466,7 +466,12 @@ cooked_index::start_writing_index (dwarf2_per_bfd *per_bfd)
started, because it may call 'wait'. */
m_write_future
= gdb::thread_pool::g_thread_pool->post_task ([this, per_bfd,
- ctx = std::move (ctx)] ()
+#if __cplusplus >= 201402L
+ ctx = std::move (ctx)
+#else
+ ctx
+#endif
+ ] ()
{
maybe_write_index (per_bfd, ctx);
});
