Merge branch 'master' into veb/free

doc/docs.md

@@ -6725,15 +6725,16 @@ performance, memory usage, or size.
 
 | Tuning Operation         | Benefits                        | Drawbacks                                         |
 |--------------------------|---------------------------------|---------------------------------------------------|
-| `@[inline]`               | Performance                     | Increased executable size                         |
-| `@[direct_array_access]`  | Performance                     | Safety risks                                      |
-| `@[packed]`               | Memory usage                    | Potential performance loss                        |
-| `@[minify]`               | Performance, Memory usage       | May break binary serialization/reflection         |
+| `@[inline]`              | Performance                     | Increased executable size                         |
+| `@[direct_array_access]` | Performance                     | Safety risks                                      |
+| `@[packed]`              | Memory usage                    | Potential performance loss                        |
+| `@[minify]`              | Performance, Memory usage       | May break binary serialization/reflection         |
 | `_likely_/_unlikely_`    | Performance                     | Risk of negative performance impact               |
 | `-skip-unused`           | Performance, Compile time, Size | Potential instability                             |
 | `-fast-math`             | Performance                     | Risk of incorrect mathematical operations results |
 | `-d no_segfault_handler` | Compile time, Size              | Loss of segfault trace                            |
 | `-cflags -march=native`  | Performance                     | Risk of reduced CPU compatibility                 |
+| `-compress`              | Size                            | Harder to debug, extra dependency `upx`           |
 | `PGO`                    | Performance, Size               | Usage complexity                                  |
 
 ### Tuning operations details
@@ -6920,6 +6921,22 @@ with identical hardware.
 
 - When distributing the software to users with potentially older CPUs.
 
+#### `-compress`
+
+This flag executes `upx` to compress the resultant executable,
+reducing its size by around 50%-70%.
+
+**When to Use**
+
+- For really tiny environments, where the size of the executable on the file system,
+or when deploying is important. The executable will be uncompressed at runtime,
+so it will take a bit more time to start.
+
+**When to Avoid**
+
+- When you need to debug the application, or when your app's startup time
+is extremely important (where 1-2ms can be meaningful for you).
+
 #### PGO (Profile-Guided Optimization)
 
 PGO allows the compiler to optimize code based on its behavior during sample runs. This can improve

vlib/sync/stdatomic/atomic_test.v

@@ -8,7 +8,7 @@ mut:
 	counter u64
 }
 
-// without proper syncronization this would fail
+// without proper synchronization this would fail
 fn test_count_10_times_1_cycle_should_result_10_cycles_with_sync() {
 	desired_iterations := 10 * iterations_per_cycle
 	mut wg := sync.new_waitgroup()

vlib/v/gen/c/struct.v

@@ -415,6 +415,14 @@ fn (mut g Gen) zero_struct_field(field ast.StructField) bool {
 					g.struct_init(default_init)
 				}
 				return true
+			} else if sym.language == .v && !field.typ.is_ptr() && sym.mod != 'builtin'
+				&& !sym.info.is_empty_struct() {
+				default_init := ast.StructInit{
+					typ: field.typ
+				}
+				g.write('.${field_name} = ')
+				g.struct_init(default_init)
+				return true
 			}
 		}
 	}

vlib/v/tests/structs/struct_field_default_value_optional_test.v

@@ -0,0 +1,27 @@
+import regex
+
+struct RegexCache {
+mut:
+	tag_script_start regex.RE = regex.regex_opt(r'^script.*>') or { panic(err) }
+}
+
+pub struct Tokenizer {
+mut:
+	regex_cache RegexCache = RegexCache{}
+}
+
+fn new_parser() &Parser {
+	mut parser := &Parser{}
+	return parser
+}
+
+pub struct Parser {
+mut:
+	tnzr Tokenizer
+}
+
+fn test_struct_field_default_value_optional() {
+	p := new_parser()
+	println(p)
+	assert true
+}