Fix atomicfields serialization for system image (JuliaLang#42390)

LilithHafner · Mar 8, 2022 · 8d2987f · 8d2987f
1 parent 374fac0
commit 8d2987f
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/staticdata.c b/src/staticdata.c
@@ -1041,14 +1041,14 @@ static void jl_write_values(jl_serializer_state *s)
                 jl_typename_t *tn = (jl_typename_t*)v;
                 jl_typename_t *newtn = (jl_typename_t*)&s->s->buf[reloc_offset];
                 if (tn->atomicfields != NULL) {
-                    size_t nf = jl_svec_len(tn->names);
+                    size_t nb = (jl_svec_len(tn->names) + 31) / 32 * sizeof(uint32_t);
                     uintptr_t layout = LLT_ALIGN(ios_pos(s->const_data), sizeof(void*));
                     write_padding(s->const_data, layout - ios_pos(s->const_data)); // realign stream
                     newtn->atomicfields = NULL; // relocation offset
                     layout /= sizeof(void*);
                     arraylist_push(&s->relocs_list, (void*)(reloc_offset + offsetof(jl_typename_t, atomicfields))); // relocation location
                     arraylist_push(&s->relocs_list, (void*)(((uintptr_t)ConstDataRef << RELOC_TAG_OFFSET) + layout)); // relocation target
-                    ios_write(s->const_data, (char*)tn->atomicfields, nf);
+                    ios_write(s->const_data, (char*)tn->atomicfields, nb);
                 }
             }
             else if (((jl_datatype_t*)(jl_typeof(v)))->name == jl_idtable_typename) {