From: Michael Jeanson <mjeanson@efficios.com>
Date: Mon, 5 Jun 2023 17:58:16 +0000 (-0400)
Subject: fix: aarch64: allow RHEL7 gcc 4.8.5-11
X-Git-Tag: v0.14.1~26
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=ce48fb1ee8d85565517808346faff94d431327a9;p=userspace-rcu.git

fix: aarch64: allow RHEL7 gcc 4.8.5-11

The patch for GCC upstream bug 63293[1] was backported in RHEL7 gcc
4.8.5-11 package, allow building with this version.

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63293

Change-Id: Ib5d8ef3c292a691167c5c4834c1e0bfdfe5b56b3
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/include/urcu/arch/aarch64.h b/include/urcu/arch/aarch64.h
index 9e2f1ff..2da43d1 100644
--- a/include/urcu/arch/aarch64.h
+++ b/include/urcu/arch/aarch64.h
@@ -44,9 +44,17 @@ extern "C" {
 
 /*
  * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63293
+ *
+ * Backported in RHEL7 gcc 4.8.5-11
  */
+#if defined(URCU_GCC_VERSION) && defined(__GNUC_RH_RELEASE__)
+# if (URCU_GCC_VERSION == 40805) && (__GNUC_RH_RELEASE__ >= 11)
+#  define URCU_GCC_PATCHED_63293
+# endif
+#endif
+
 #ifdef URCU_GCC_VERSION
-# if URCU_GCC_VERSION < 50100
+# if URCU_GCC_VERSION < 50100 && !defined(URCU_GCC_PATCHED_63293)
 #  error Your gcc version performs unsafe access to deallocated stack
 # endif
 #endif