fix CI regressions across V1 and V3

Author: medvednikov

cmd/v/macos_v3_test.v

@@ -1044,7 +1044,8 @@ fn main() {
 	environment['VFLAGS'] = ''
 	environment['VOSARGS'] = ''
 	mut process := os.new_process(@VEXE)
-	process.set_args(['-ownership', '-d=ownership', '-gc', 'none', '-o', output, source])
+	process.set_args(['-ownership', '-no-parallel', '-d=ownership', '-gc', 'none', '-o', output,
+		source])
 	process.set_environment(environment)
 	process.set_redirect_stdio()
 	process.run()

vlib/net/websocket/tests/autobahn/ws_test/Dockerfile

@@ -5,7 +5,7 @@ COPY ./ /src/
 
 WORKDIR /src
 
-RUN make CC=clang 
+RUN make fresh_tcc CC=clang && make CC=clang
 
 RUN /src/v /src/vlib/net/websocket/tests/autobahn/autobahn_server.v
 RUN chmod +x /src/vlib/net/websocket/tests/autobahn/autobahn_server

vlib/v/checker/tests/assign_multi_mismatch.out

@@ -37,11 +37,11 @@ vlib/v/checker/tests/assign_multi_mismatch.vv:30:15: notice: condition is always
    29 | _ := if true { f() } else { f() }
    30 | _, _ := 0, if true { f() } else { f() }
       |               ~~~~
-vlib/v/checker/tests/assign_multi_mismatch.vv:5:3: error: assignment mismatch: 1 variable 2 values
+vlib/v/checker/tests/assign_multi_mismatch.vv:5:9: error: unexpected `,` in expression, use `;` or a new line to separate statements
     3 | }
     4 | 
     5 | _ := 0, 0
-      |   ~~
+      |         ^
     6 | _ := f()
     7 | _, _ := f()
 vlib/v/checker/tests/assign_multi_mismatch.vv:6:3: error: assignment mismatch: 1 variable but `f()` returns 2 values

vlib/v/gen/c/cgen.v

@@ -13628,9 +13628,12 @@ fn (mut g Gen) type_default_impl(typ_ ast.Type, decode_sumtype bool) string {
 		.sum_type {
 			return if decode_sumtype { g.type_default_sumtype(typ, sym) } else { '{0}' }
 		}
-		.interface, .multi_return, .thread {
+		.interface, .multi_return {
 			return '{0}'
 		}
+		.thread {
+			return '0'
+		}
 		.alias {
 			return g.type_default((sym.info as ast.Alias).parent_type)
 		}

vlib/v/gen/c/embed.v

@@ -145,7 +145,9 @@ fn (mut g Gen) gen_embedded_data() {
 	*/
 	// Declare the index before any generated helper references it, to keep MSVC happy.
 	index_len := g.embedded_files.len + 1
-	g.embedded_data.writeln('static const v__embed_file__EmbedFileIndexEntry _v_embed_file_index[${index_len}];')
+	if g.is_cc_msvc {
+		g.embedded_data.writeln('static const v__embed_file__EmbedFileIndexEntry _v_embed_file_index[${index_len}];')
+	}
 	for i, emfile in g.embedded_files {
 		g.embedded_data.write_string('static const unsigned char _v_embed_blob_${i}[${emfile.bytes.len}] = {\n    ')
 		for j := 0; j < emfile.bytes.len; j++ {

vlib/v/gen/c/struct.v

@@ -1295,7 +1295,10 @@ fn (mut g Gen) struct_init_field_default(field_unwrap_typ ast.Type, sfield &ast.
 		g.write('/* autoref */&')
 	}
 
-	if (sfield.expected_type.has_flag(.option) && !field_unwrap_typ.has_flag(.option))
+	if sfield.expected_type.has_flag(.option) && field_unwrap_typ.has_flag(.option)
+		&& g.styp(sfield.expected_type) != g.styp(field_unwrap_typ) {
+		g.expr_opt_with_cast(sfield.expr, field_unwrap_typ, sfield.expected_type)
+	} else if (sfield.expected_type.has_flag(.option) && !field_unwrap_typ.has_flag(.option))
 		|| (sfield.expected_type.has_flag(.result) && !field_unwrap_typ.has_flag(.result)) {
 		g.expr_with_opt(sfield.expr, field_unwrap_typ, sfield.expected_type)
 	} else if sfield.expr is ast.LambdaExpr && sfield.expected_type.has_flag(.option) {

vlib/v/gen/c/testdata/embed_issue_12035.c.must_have

@@ -1,3 +1,2 @@
-static const v__embed_file__EmbedFileIndexEntry _v_embed_file_index[2];
 static const v__embed_file__EmbedFileIndexEntry _v_embed_file_index[2] = {
 v__embed_file__EmbedFileData _v_embed_file_metadata(u64 ef_hash) {

vlib/v/gen/c/testdata/embed_with_prod_zlib.c.must_have

@@ -1,7 +1,6 @@
 #define _VPROD (1)
 
 // V embedded data:
-static const v__embed_file__EmbedFileIndexEntry _v_embed_file_index[2];
 static const unsigned char _v_embed_blob_0[139] = {
 0x78,0x9c,0xd3,0xd7,0x57,0x28,0x2b,0x49,0x2d,0x2e,0x51,0x28,0x4b,0xcb,0x49,0x4c,
 

vlib/v/gen/c/testdata/thread_struct_field_default_nix.c.must_have

@@ -0,0 +1 @@
+.worker = 0,

vlib/v/gen/c/testdata/thread_struct_field_default_nix.vv

@@ -0,0 +1,7 @@
+struct ThreadHolder {
+	worker thread
+}
+
+fn main() {
+	_ := ThreadHolder{}
+}