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925a688400
With glib 2.63.2 and clang 9.0.0 (Fedora 32) we get compile errors:
../clients/cloud-setup/nmcs-provider-ec2.c:51:8: error: incompatible pointer types passing 'typeof ((((void *)0))) *' (aka 'void **') to parameter of type 'const char **' [-Werror,-Wincompatible-pointer-types]
if (!g_atomic_pointer_compare_and_exchange (&base_cached, NULL, base))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/glib-2.0/glib/gatomic.h:192:44: note: expanded from macro 'g_atomic_pointer_compare_and_exchange'
__atomic_compare_exchange_n ((atomic), &gapcae_oldval, (newval), FALSE, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) ? TRUE : FALSE; \
^~~~~~~~~~~~~~
../src/devices/bluetooth/nm-bluez-manager.c:2836:2: error: incompatible pointer types passing 'typeof ((((void *)0))) *' (aka 'void **') to parameter of type 'const NMBtVTableNetworkServer **' (aka 'const struct _NMBtVTableNetworkServer **') [-Werror,-Wincompatible-pointer-types]
g_atomic_pointer_compare_and_exchange (&nm_bt_vtable_network_server, NULL, &priv->vtable_network_server);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/glib-2.0/glib/gatomic.h:192:44: note: expanded from macro 'g_atomic_pointer_compare_and_exchange'
__atomic_compare_exchange_n ((atomic), &gapcae_oldval, (newval), FALSE, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) ? TRUE : FALSE; \
^~~~~~~~~~~~~~
../src/devices/bluetooth/nm-bluez-manager.c:2853:2: error: passing 'typeof ((&priv->vtable_network_server)) *' (aka 'struct _NMBtVTableNetworkServer **') to parameter of type 'const NMBtVTableNetworkServer **' (aka 'const struct _NMBtVTableNetworkServer **') discards qualifiers in nested pointer types [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
g_atomic_pointer_compare_and_exchange (&nm_bt_vtable_network_server, &priv->vtable_network_server, NULL);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/glib-2.0/glib/gatomic.h:192:44: note: expanded from macro 'g_atomic_pointer_compare_and_exchange'
__atomic_compare_exchange_n ((atomic), &gapcae_oldval, (newval), FALSE, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) ? TRUE : FALSE; \
^~~~~~~~~~~~~~
../src/devices/nm-device.c:8857:8: error: incompatible pointer types passing 'typeof ((((void *)0))) *' (aka 'void **') to parameter of type 'GBytes **' (aka 'struct _GBytes **') [-Werror,-Wincompatible-pointer-types]
if (!g_atomic_pointer_compare_and_exchange (&global_duid, NULL, p)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/glib-2.0/glib/gatomic.h:192:44: note: expanded from macro 'g_atomic_pointer_compare_and_exchange'
__atomic_compare_exchange_n ((atomic), &gapcae_oldval, (newval), FALSE, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST) ? TRUE : FALSE; \
^~~~~~~~~~~~~~
The issue happens because glib passes the "atomic" argument to
__atomic_compare_exchange_n ((atomic), &gapcae_oldval, (newval), FALSE, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)
without cast, and clang 9 seems to be picky about const pointers.
Add our own version of the macro that does better casts while also having
better compile time checks for valid arguments.
(cherry picked from commit
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| .. | ||
| nm-c-list.h | ||
| nm-dbus-aux.c | ||
| nm-dbus-aux.h | ||
| nm-dedup-multi.c | ||
| nm-dedup-multi.h | ||
| nm-enum-utils.c | ||
| nm-enum-utils.h | ||
| nm-errno.c | ||
| nm-errno.h | ||
| nm-glib.h | ||
| nm-hash-utils.c | ||
| nm-hash-utils.h | ||
| nm-io-utils.c | ||
| nm-io-utils.h | ||
| nm-jansson.h | ||
| nm-json-aux.c | ||
| nm-json-aux.h | ||
| nm-keyfile-aux.c | ||
| nm-keyfile-aux.h | ||
| nm-logging-fwd.h | ||
| nm-macros-internal.h | ||
| nm-obj.h | ||
| nm-random-utils.c | ||
| nm-random-utils.h | ||
| nm-secret-utils.c | ||
| nm-secret-utils.h | ||
| nm-shared-utils.c | ||
| nm-shared-utils.h | ||
| nm-time-utils.c | ||
| nm-time-utils.h | ||
| nm-value-type.h | ||