[urcu,2/4] Blacklist GCC 4.4.0, 4.4.1 and 4.4.2 on ARM
Commit Message
GCC added __sync_synchronize() in 4.4.0 but it was broken on ARM until
4.4.3, see the GCC bug report for more details :
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42263
Signed-off-by: Michael Jeanson <mjeanson at efficios.com>
Change-Id: I629e3c8b4baaccb34b2311e220f30d0ad8b69a19
---
include/urcu/arch/arm.h | 9 +++++++++
1 file changed, 9 insertions(+)
Comments
Merged in liburcu master, thanks!
Mathieu
----- On Dec 15, 2020, at 11:28 AM, Michael Jeanson mjeanson at efficios.com wrote:
> GCC added __sync_synchronize() in 4.4.0 but it was broken on ARM until
> 4.4.3, see the GCC bug report for more details :
>
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42263
>
> Signed-off-by: Michael Jeanson <mjeanson at efficios.com>
> Change-Id: I629e3c8b4baaccb34b2311e220f30d0ad8b69a19
> ---
> include/urcu/arch/arm.h | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/include/urcu/arch/arm.h b/include/urcu/arch/arm.h
> index 5d1c608..e904b06 100644
> --- a/include/urcu/arch/arm.h
> +++ b/include/urcu/arch/arm.h
> @@ -70,6 +70,15 @@ extern "C" {
> # endif
> #endif
>
> +/*
> + * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42263
> + */
> +#ifdef URCU_GCC_VERSION
> +# if URCU_GCC_VERSION >= 40400 && URCU_GCC_VERSION <= 40402
> +# error Your gcc version has a non-functional __sync_synchronize()
> +# endif
> +#endif
> +
> #ifdef __cplusplus
> }
> #endif
> --
> 2.29.2
@@ -70,6 +70,15 @@ extern "C" {
# endif
#endif
+/*
+ * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42263
+ */
+#ifdef URCU_GCC_VERSION
+# if URCU_GCC_VERSION >= 40400 && URCU_GCC_VERSION <= 40402
+# error Your gcc version has a non-functional __sync_synchronize()
+# endif
+#endif
+
#ifdef __cplusplus
}
#endif