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platform: workaround -Wmaybe-uninitialized with LTO
With LTO builds, it assumes that the assertion-failed code-paths can be reached, and thus a warning gets emitted: In function nmp_cache_lookup, inlined from nm_platform_lookup at src/libnm-platform/nm-platform.c:3377:12, inlined from nm_platform_lookup_object at ./src/libnm-platform/nmp-object.h:975:12: src/libnm-platform/nmp-object.h:742:46: error: lookup.cache_id_type may be used uninitialized [-Werror=maybe-uninitialized] 742 | return nmp_cache_lookup_all(cache, lookup->cache_id_type, &lookup->selector_obj); | ^ ./src/libnm-platform/nmp-object.h: In function nm_platform_lookup_object: ./src/libnm-platform/nmp-object.h:972:15: note: lookup declared here 972 | NMPLookup lookup; | ^
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@ -2078,6 +2078,9 @@ nmp_lookup_init_obj_type(NMPLookup *lookup, NMPObjectType obj_type)
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nm_assert(lookup);
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switch (obj_type) {
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default:
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nm_assert_not_reached();
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/* fall-through */
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case NMP_OBJECT_TYPE_LINK:
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case NMP_OBJECT_TYPE_IP4_ADDRESS:
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case NMP_OBJECT_TYPE_IP6_ADDRESS:
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@ -2089,9 +2092,6 @@ nmp_lookup_init_obj_type(NMPLookup *lookup, NMPObjectType obj_type)
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_nmp_object_stackinit_from_type(&lookup->selector_obj, obj_type);
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lookup->cache_id_type = NMP_CACHE_ID_TYPE_OBJECT_TYPE;
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return _L(lookup);
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default:
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nm_assert_not_reached();
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return NULL;
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}
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}
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@ -2106,7 +2106,7 @@ nmp_lookup_init_link_by_ifname(NMPLookup *lookup, const char *ifname)
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o = _nmp_object_stackinit_from_type(&lookup->selector_obj, NMP_OBJECT_TYPE_LINK);
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if (g_strlcpy(o->link.name, ifname, sizeof(o->link.name)) >= sizeof(o->link.name))
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g_return_val_if_reached(NULL);
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nm_assert_not_reached();
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lookup->cache_id_type = NMP_CACHE_ID_TYPE_LINK_BY_IFNAME;
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return _L(lookup);
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}
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