bugfixes

Author: vtjnash

src/gf.c

@@ -2334,15 +2334,15 @@ void jl_method_table_activate(jl_methtable_t *mt, jl_typemap_entry_t *newentry)
     // then check what entries we replaced
     oldvalue = get_intersect_matches(jl_atomic_load_relaxed(&mt->defs), newentry, &replaced, jl_cachearg_offset(mt), max_world);
     int invalidated = 0;
-    int only = 1; // compute if this will be currently the only result that would returned from `ml_matches` given `sig`
+    int only = !(jl_atomic_load_relaxed(&method->dispatch_status) & METHOD_SIG_PRECOMPILE_MANY); // will compute if this will be currently the only result that would returned from `ml_matches` given `sig`
     if (replaced) {
         oldvalue = (jl_value_t*)replaced;
         jl_method_t *m = replaced->func.method;
-        int m_dispatch = jl_atomic_load_relaxed(&m->dispatch_status);
         invalidated = 1;
         method_overwrite(newentry, m);
         // this is an optimized version of below, given we know the type-intersection is exact
         jl_method_table_invalidate(mt, m, max_world);
+        int m_dispatch = jl_atomic_load_relaxed(&m->dispatch_status);
         jl_atomic_store_relaxed(&m->dispatch_status, 0);
         only = m_dispatch & METHOD_SIG_LATEST_ONLY;
     }
@@ -2476,7 +2476,7 @@ void jl_method_table_activate(jl_methtable_t *mt, jl_typemap_entry_t *newentry)
                 }
                 if (only) {
                     if (morespec[j] == (char)morespec_is || ambig == morespec_is ||
-                        (morespec[j] == (char)morespec_unknown && ambig == morespec_unknown && !jl_type_morespecific(type, m->sig))) {
+                        (ambig == morespec_unknown && !jl_type_morespecific(type, m->sig))) {
                         only = 0;
                     }
                 }

src/julia_internal.h

@@ -679,6 +679,7 @@ typedef union {
 
 #define METHOD_SIG_LATEST_WHICH             0b0001
 #define METHOD_SIG_LATEST_ONLY              0b0010
+#define METHOD_SIG_PRECOMPILE_MANY          0b0100
 
 JL_DLLEXPORT jl_code_instance_t *jl_engine_reserve(jl_method_instance_t *m, jl_value_t *owner);
 JL_DLLEXPORT void jl_engine_fulfill(jl_code_instance_t *ci, jl_code_info_t *src);

src/precompile_utils.c

@@ -423,7 +423,7 @@ static void jl_rebuild_methtables(arraylist_t* MIs, htable_t* mtables)
             size_t min_world = jl_atomic_load_relaxed(&m->primary_world);
             size_t max_world = ~(size_t)0;
             assert(min_world == jl_atomic_load_relaxed(&m->primary_world));
-            size_t dispatch_status = jl_atomic_load_relaxed(&m->dispatch_status);
+            int dispatch_status = jl_atomic_load_relaxed(&m->dispatch_status);
             jl_atomic_store_relaxed(&m->primary_world, ~(size_t)0);
             jl_atomic_store_relaxed(&m->dispatch_status, 0);
             jl_typemap_entry_t *newentry = jl_method_table_add(mt, m, NULL);

src/staticdata.c

@@ -1807,7 +1807,8 @@ static void jl_write_values(jl_serializer_state *s) JL_GC_DISABLED
                 if (s->incremental) {
                     if (jl_atomic_load_relaxed(&newm->primary_world) > 1) {
                         jl_atomic_store_relaxed(&newm->primary_world, ~(size_t)0); // min-world
-                        jl_atomic_store_relaxed(&newm->dispatch_status, 0);
+                        int dispatch_status = jl_atomic_load_relaxed(&newm->dispatch_status);
+                        jl_atomic_store_relaxed(&newm->dispatch_status, dispatch_status & METHOD_SIG_LATEST_ONLY ? 0 : METHOD_SIG_PRECOMPILE_MANY);
                         arraylist_push(&s->fixup_objs, (void*)reloc_offset);
                     }
                 }

src/typemap.c

@@ -569,10 +569,8 @@ int has_covariant_var(jl_datatype_t *ttypes, jl_tvar_t *tv)
 
 void typemap_slurp_search(jl_typemap_entry_t *ml, struct typemap_intersection_env *closure)
 {
-    // n.b. we could consider mt->max_args here too, so this optimization
-    //      usually works even if the user forgets the `slurp...` argument, but
-    //      there is discussion that parameter may be going away? (and it is
-    //      already not accurately up-to-date for all tables currently anyways)
+    // TODO: we should consider nparams(closure->type) here too, so this optimization
+    //      usually works even if the user forgets the `slurp...` argument
     if (closure->search_slurp && ml->va) {
         jl_value_t *sig = jl_unwrap_unionall((jl_value_t*)ml->sig);
         size_t nargs = jl_nparams(sig);