[PATCH] libstdc++: Mark non-exported function always_inline

gcc-03af8492bee6243a9d10e78fea1a3e423bd5f9cd.patch

@@ -0,0 +1,41 @@
+From 03af8492bee6243a9d10e78fea1a3e423bd5f9cd Mon Sep 17 00:00:00 2001
+From: Jonathan Wakely <jwakely@redhat.com>
+Date: Fri, 27 May 2022 12:43:18 +0100
+Subject: [PATCH] libstdc++: Mark non-exported function always_inline
+ [PR105671]
+
+This new function was added for gcc 11.1 but is not exported from the
+shared library. Depending on inlining decisions, its callers might get
+inlined but an external definition be needed for this function. That
+then fails to link.
+
+Since we can't add the export to the gcc-11 release branch now, mark it
+always_inline. We can consider exporting it for gcc-13 if/when we bump
+the shared library version (and maybe also for gcc-12 which is currently
+at the same version as trunk). For now, the attribute will solve the
+problem on all affected branches. The function is small enough that
+force-inlining it shouldn't cause problems.
+
+libstdc++-v3/ChangeLog:
+
+	PR libstdc++/105671
+	* include/std/sstream (basic_stringbuf::_M_high_mark): Add
+	always_inline attribute.
+
+(cherry picked from commit de57440858591a88e8fd7ba2505ca54546c86021)
+---
+ libstdc++-v3/include/std/sstream | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/libstdc++-v3/include/std/sstream b/libstdc++-v3/include/std/sstream
+index f21664100ab8..56555ecd98a1 100644
+--- a/libstdc++-v3/include/std/sstream
++++ b/libstdc++-v3/include/std/sstream
+@@ -425,6 +425,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
+       // This might not be the same character as _M_string.end() because
+       // basic_stringbuf::overflow might have written to unused capacity
+       // in _M_string without updating its length.
++      __attribute__((__always_inline__))
+       char_type*
+       _M_high_mark() const _GLIBCXX_NOEXCEPT
+       {

gcc.spec

@@ -38,10 +38,12 @@ Source11: https://github.com/westes/flex/releases/download/v%{flexVersion}/flex-
 
 Patch0: gcc-flex-nonfull-path-m4
 Patch1: gcc-flex-disable-doc
+Patch2: gcc-03af8492bee6243a9d10e78fea1a3e423bd5f9cd
 
 %prep
 
 %setup -T -b 0 -n %{moduleName}
+%patch2 -p1
 
 # Filter out private stuff from RPM requires headers.
 cat << \EOF > %{name}-req