From 4607e884e50227c3e7d784dd3a0b6809b4fb5fbf Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Mon, 18 Jul 2022 05:42:42 -0700
Subject: [PATCH] [3.11] gh-94847: Don't force inlining in debug builds of
 libmpdec (GH-94848) (GH-94951)

Co-authored-by: Christian Heimes <christian@python.org>
---
 .../Build/2022-07-14-11-13-26.gh-issue-94847.s3Kr5p.rst     | 2 ++
 configure                                                   | 6 ++++++
 configure.ac                                                | 5 +++++
 3 files changed, 13 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Build/2022-07-14-11-13-26.gh-issue-94847.s3Kr5p.rst

diff --git a/Misc/NEWS.d/next/Build/2022-07-14-11-13-26.gh-issue-94847.s3Kr5p.rst b/Misc/NEWS.d/next/Build/2022-07-14-11-13-26.gh-issue-94847.s3Kr5p.rst
new file mode 100644
index 00000000000..a6d1e7277da
--- /dev/null
+++ b/Misc/NEWS.d/next/Build/2022-07-14-11-13-26.gh-issue-94847.s3Kr5p.rst
@@ -0,0 +1,2 @@
+Fixed ``_decimal`` module build issue on GCC when compiling with LTO and
+pydebug. Debug builds no longer force inlining of functions.
diff --git a/configure b/configure
index be8935937c8..078bb5bef13 100755
--- a/configure
+++ b/configure
@@ -11990,6 +11990,12 @@ else
   LIBMPDEC_LDFLAGS="-lm \$(LIBMPDEC_A)"
   LIBMPDEC_INTERNAL="\$(LIBMPDEC_A)"
 
+    if test "x$with_pydebug" = xyes; then :
+
+    as_fn_append LIBMPDEC_CFLAGS " -DTEST_COVERAGE"
+
+fi
+
 fi
 
 
diff --git a/configure.ac b/configure.ac
index 695576a46e8..09f3f902a6b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3628,6 +3628,11 @@ AS_VAR_IF([with_system_libmpdec], [yes], [
   LIBMPDEC_CFLAGS="-I\$(srcdir)/Modules/_decimal/libmpdec"
   LIBMPDEC_LDFLAGS="-lm \$(LIBMPDEC_A)"
   LIBMPDEC_INTERNAL="\$(LIBMPDEC_A)"
+
+  dnl Disable forced inlining in debug builds, see GH-94847
+  AS_VAR_IF([with_pydebug], [yes], [
+    AS_VAR_APPEND([LIBMPDEC_CFLAGS], [" -DTEST_COVERAGE"])
+  ])
 ])
 
 AC_SUBST([LIBMPDEC_CFLAGS])
-- 
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