ci: disable old native runs; checker: const/import conflict check

Author: medvednikov

.github/workflows/linux_ci.yml

@@ -80,8 +80,6 @@ jobs:
         run: v run ci/linux_ci.vsh test_leak_detector_tcc
       - name: Test leak detector not being active for normal compile
         run: v run ci/linux_ci.vsh test_leak_detector_not_active_tcc
-      - name: native cross compilation to macos
-        run: v run ci/linux_ci.vsh native_cross_compilation_to_macos
 
   gcc-linux:
     runs-on: ubuntu-24.04
@@ -130,10 +128,6 @@ jobs:
         run: v run ci/linux_ci.vsh v_self_compilation_parallel_cc_gcc
       - name: Build modules
         run: v run ci/linux_ci.vsh build_modules_gcc
-      - name: native machine code generation
-        run: v run ci/linux_ci.vsh native_machine_code_generation_gcc
-      - name: native cross compilation to macos
-        run: v run ci/linux_ci.vsh native_cross_compilation_to_macos
       - name: compile vdoctor.v with -prod
         run: v run ci/linux_ci.vsh compile_vdoctor_prod_gcc
       - name: compile vup.v with -prod
@@ -181,7 +175,3 @@ jobs:
         run: v run ci/linux_ci.vsh build_examples_autofree_clang
       - name: Build modules
         run: v run ci/linux_ci.vsh build_modules_clang
-      - name: native machine code generation
-        run: v run ci/linux_ci.vsh native_machine_code_generation_clang
-      - name: native cross compilation to macos
-        run: v run ci/linux_ci.vsh native_cross_compilation_to_macos

.github/workflows/native_backend_ci.yml

@@ -1,5 +1,8 @@
 # ignore sub-level untracked files and the v binary
 */**/*
+# unignore checker test files
+!vlib/v/checker/tests/*.vv
+!vlib/v/checker/tests/*.out
 v
 v.exe
 v2

.gitignore

@@ -395,28 +395,6 @@ fn build_modules_clang() {
 	exec('v build-module vlib/os/cmdline')
 }
 
-fn native_machine_code_generation_common() {
-	exec('cd cmd/tools && v gen1m.v')
-	exec('cd cmd/tools && ./gen1m > 1m.v')
-	exec('cd cmd/tools && v -backend native -o 1m 1m.v')
-	exec('cd cmd/tools && ./1m && ls -larS 1m*')
-	exec('cd cmd/tools && rm -f ./1m ./1m.v')
-}
-
-fn native_machine_code_generation_gcc() {
-	native_machine_code_generation_common()
-}
-
-fn native_machine_code_generation_clang() {
-	native_machine_code_generation_common()
-}
-
-fn native_cross_compilation_to_macos() {
-	exec('v -os macos -experimental -b native -o hw.macos examples/hello_world.v')
-	common.file_size_greater_than('hw.macos', 8000)
-	exec('rm -f hw.macos')
-}
-
 fn test_inline_assembly() {
 	exec('v test vlib/v/slow_tests/assembly')
 }
@@ -483,9 +461,6 @@ const all_tasks = {
 	'build_examples_clang':                              Task{build_examples_clang, 'Build examples (clang)'}
 	'build_examples_autofree_clang':                     Task{build_examples_autofree_clang, 'Build examples with -autofree (clang)'}
 	'build_modules_clang':                               Task{build_modules_clang, 'Build modules (clang)'}
-	'native_machine_code_generation_clang':              Task{native_machine_code_generation_clang, 'native machine code generation (clang)'}
-	'native_machine_code_generation_gcc':                Task{native_machine_code_generation_gcc, 'native machine code generation (gcc)'}
-	'native_cross_compilation_to_macos':                 Task{native_cross_compilation_to_macos, 'native cross compilation to macos'}
 	'test_inline_assembly':                              Task{test_inline_assembly, 'Test inline assembly'}
 }
 

ci/linux_ci.vsh

@@ -3352,6 +3352,17 @@ fn (mut c Checker) const_decl(mut node ast.ConstDecl) {
 			}
 			c.error('duplicate of a module name `${field.name}`', name_pos)
 		}
+		for imp in c.file.imports {
+			imp_alias := if imp.alias.len > 0 { imp.alias } else { imp.mod.all_after_last('.') }
+			if const_name == imp_alias {
+				name_pos := token.Pos{
+					...field.pos
+					len: util.no_cur_mod(field.name, c.mod).len
+				}
+				c.error('const `${const_name}` conflicts with imported module `${imp.mod}`',
+					name_pos)
+			}
+		}
 		if const_name == '_' {
 			name_pos := token.Pos{
 				...field.pos

vlib/v/checker/checker.v

@@ -0,0 +1,12 @@
+vlib/v/checker/tests/const_import_conflict_err.vv:1:8: warning: module 'strings' is imported but never used. Use `import strings as _`, to silence this warning, or just remove the unused import line
+    1 | import strings
+      |        ~~~~~~~
+    2 |
+    3 | const strings = ['hello', 'world']
+vlib/v/checker/tests/const_import_conflict_err.vv:3:7: error: const `strings` conflicts with imported module `strings`
+    1 | import strings
+    2 |
+    3 | const strings = ['hello', 'world']
+      |       ~~~~~~~
+    4 |
+    5 | fn main() {

vlib/v/checker/tests/const_import_conflict_err.out

@@ -0,0 +1,7 @@
+import strings
+
+const strings = ['hello', 'world']
+
+fn main() {
+	println(strings)
+}