freestanding: malloc/free with mm_alloc an mm_free

Added more array support that depends on malloc. Added string clone (that uses malloc). Added test for it. Eliminated stack allocated buffers from most of the unit checks.

vlib/builtin/bare/.checks/checks.v

@@ -12,8 +12,7 @@ fn passed (msg string) {
 
 
 fn vcheck(vfile string) {
-	//os.system("ln -s ../forkedtest $vfile/forkedtest")
-	run_check := "v -user_mod_path . -freestanding --enable-globals run "
+	run_check := "v -user_mod_path . -freestanding run "
 	if 0 == os.system("$run_check $vfile/${vfile}.v") {
 		passed(run_check)
 	} else {
@@ -21,7 +20,6 @@ fn vcheck(vfile string) {
 	}
 	os.system("ls -lh $vfile/$vfile")
 	os.system("rm -f $vfile/$vfile")
-	//os.system("rm -f $vfile/forkedtest")
 }
 
 fn main() {

vlib/builtin/bare/.checks/forkedtest/forkedtest.v

@@ -1,33 +1,25 @@
 module forkedtest
 
-__global buffer [128]byte
-
 pub fn run (op fn(), label string, code wi_si_code, status int) int {
 	child := sys_fork()
 	if child == 0 {
 		op()
 		sys_exit(0)
 	}
-	siginfo := [
-		0, 0, 0, 0, 0, 0, 0, 0,
-		0, 0, 0, 0, 0, 0, 0, 0,
-		0, 0, 0, 0, 0, 0, 0, 0,
-		0, 0, 0, 0, 0, 0, 0, 0,
-		0, 0, 0, 0, 0, 0, 0, 0,
-		0, 0, 0, 0, 0, 0, 0, 0,
-		0, 0, 0, 0, 0, 0, 0, 0,
-		0, 0, 0, 0, 0, 0, 0, 0]
 
-	e := sys_waitid(.p_pid, child, intptr(siginfo.data) , .wexited, 0)
+	siginfo := [0].repeat(int(sig_index.si_size))
+
+	e := sys_waitid(.p_pid, child, intptr(&siginfo[0]), .wexited, 0)
 
 	assert e == .enoerror
-	assert siginfo[sig_index.si_pid] == child
-	assert siginfo[sig_index.si_signo] == int(signo.sigchld)
-	assert siginfo[sig_index.si_uid] == sys_getuid()
+	assert siginfo[int(sig_index.si_pid)] == child
+	assert siginfo[int(sig_index.si_signo)] == int(signo.sigchld)
+	assert siginfo[int(sig_index.si_uid)] == sys_getuid()
 
 	r_code := siginfo[sig_index.si_code]
 	r_status := siginfo[sig_index.si_status]
 
+	print("+++ ")
 	print(label)
 	if (int(code) == r_code) && (status == r_status) {
 		println(" PASSED")
@@ -37,16 +29,16 @@ pub fn run (op fn(), label string, code wi_si_code, status int) int {
 
 	if int(code) != r_code {
 		print(">> Expecting si_code 0x")
-		println(i64_tos(buffer,80,int(code),16))
+		println(i64_str(int(code),16))
 		print(">> Got 0x")
-		println(i64_tos(buffer,80,r_code,16))
+		println(i64_str(r_code,16))
 	}
 
 	if status != r_status {
 		print(">> Expecting status 0x")
-		println(i64_tos(buffer,80,status,16))
+		println(i64_str(status,16))
 		print(">> Got 0x")
-		println(i64_tos(buffer,80,r_status,16))
+		println(i64_str(r_status,16))
 	}
 
 	return 1

vlib/builtin/bare/.checks/linuxsys/linuxsys.v

@@ -40,15 +40,15 @@ fn check_read_write_pipe() {
 	//		sys_read
 	//		sys_close
 	//
-	buffer, e := mm_alloc(128)
-	assert e == .enoerror
+	buffer0 := [byte(0)].repeat(128)
+	buffer := byteptr(buffer0.data)
 
 	fd := [-1, -1]
 
 	assert fd[0] == -1
 	assert fd[1] == -1
 
-	a := sys_pipe(intptr(fd.data))
+	a := sys_pipe(intptr(&fd[0]))
 
 	assert a == .enoerror
 
@@ -62,7 +62,7 @@ fn check_read_write_pipe() {
 	assert e1 == .enoerror
 	assert c1 == b
 
-	c2, e2 := sys_read(fd[0], byteptr(buffer), u64(b))
+	c2, e2 := sys_read(fd[0], buffer, u64(b))
 
 	assert e2 == .enoerror
 	assert c2 == b
@@ -77,8 +77,6 @@ fn check_read_write_pipe() {
 	assert sys_close(fd[1]) == .enoerror
 
 	assert sys_close(-1) == .ebadf
-
-	assert mm_free(buffer) == .enoerror
 }
 
 fn check_read_file() {
@@ -89,8 +87,8 @@ fn check_read_file() {
 			sys_close
 			sys_open
 	*/
-	buffer, mae := mm_alloc(128)
-	assert mae == .enoerror
+	buffer0 := [byte(0)].repeat(128)
+	buffer := byteptr(buffer0.data)
 
 	test_file := "sample_text1.txt"
 	sample_text := "Do not change this text.\n"
@@ -105,7 +103,6 @@ fn check_read_file() {
 		assert sample_text[i] == buffer[i]
 	}
 	assert sys_close(fd) == .enoerror
-	assert mm_free(buffer) == .enoerror
 }
 
 fn check_open_file_fail() {

vlib/builtin/bare/.checks/string/string.v

@@ -8,9 +8,8 @@ fn check_string_eq () {
 }
 
 fn check_i64_tos() {
-	buffer, e := mm_alloc(128)
-	assert e == .enoerror
-	assert !isnil(buffer)
+	buffer0 := [byte(0)].repeat(128)
+	buffer := byteptr(buffer0.data)
 
 	s0 := i64_tos(buffer, 70, 140, 10)
 	assert s0 == "140"
@@ -23,14 +22,29 @@ fn check_i64_tos() {
 
 	s3 := i64_tos(buffer, 70, -160000, 10)
 	assert s3 == "-160000"
+}
 
-	assert mm_free(buffer) == .enoerror
+fn check_i64_str() {
+	assert "141" == i64_str(141, 10)
+	assert "-161" == i64_str(-161, 10)
+	assert "10002" == i64_str(65538, 16)
+	assert "-160001" == i64_str(-160001, 10)
+}
+
+fn check_str_clone() {
+	a := i64_str(1234,10)
+	b := a.clone()
+	assert a == b
+	c := i64_str(-6789,10).clone()
+	assert c == "-6789"
 }
 
 fn main () {
 	mut fails := 0
 	fails += forkedtest.normal_run(check_string_eq, "check_string_eq")
 	fails += forkedtest.normal_run(check_i64_tos, "check_i64_tos")
+	fails += forkedtest.normal_run(check_i64_str, "check_i64_str")
+	fails += forkedtest.normal_run(check_str_clone, "check_str_clone")
 	assert fails == 0
 	sys_exit(0)
 }