fixing non pointer struct method receiver not counting as use

forgot to strip pointer

Signed-off-by: Jakub Doka <jakub.doka2@gmail.com>

lang/README.md

@@ -692,7 +692,6 @@ modify := fn($num: ^uint): void {
 }
 ```
 
-
 #### fb_driver
 ```hb
 arm_fb_ptr := fn(): uint return 100
@@ -733,6 +732,36 @@ main := fn(): uint {
 
 ### Purely Testing Examples
 
+#### method_receiver_by_value
+```hb
+$log := fn(ptr: ^u8): void return @eca(0, ptr)
+Struct := struct {
+	ptr: ^u8,
+	print := fn(self: Self, rhs: Self): void {
+		log(self.ptr)
+		log(rhs.ptr)
+	}
+}
+
+Struct2 := struct {
+	ptr: ^u8,
+	print2 := fn(self: ^Self, rhs: ^Self): void {
+		log(self.ptr)
+		log(rhs.ptr)
+	}
+}
+
+main := fn(): void {
+	lhs := Struct.("Hello, World!\0")
+	rhs := Struct.("Goodbye, World!\0")
+	lhs.print(rhs)
+
+	lhs2 := Struct2.("Hello, World!\0")
+	rhs2 := Struct2.("Goodbye, World!\0")
+	lhs2.print2(&rhs2)
+}
+```
+
 #### comparing_floating_points
 ```hb
 main := fn(): uint {

lang/src/backend/hbvm.rs

@@ -1121,7 +1121,7 @@ pub struct AbleOsExecutableHeader {
 
 #[cfg(test)]
 pub fn test_run_vm(out: &[u8], output: &mut String) {
-    use core::fmt::Write;
+    use core::{ffi::CStr, fmt::Write};
 
     let mut stack = [0_u64; 1024 * 20];
 
@@ -1138,6 +1138,12 @@ pub fn test_run_vm(out: &[u8], output: &mut String) {
         match vm.run() {
             Ok(hbvm::VmRunOk::End) => break Ok(()),
             Ok(hbvm::VmRunOk::Ecall) => match vm.read_reg(2).0 {
+                0 => writeln!(
+                    output,
+                    "{}",
+                    unsafe { CStr::from_ptr(vm.read_reg(3).0 as _) }.to_str().unwrap()
+                )
+                .unwrap(),
                 1 => writeln!(output, "ev: Ecall").unwrap(), // compatibility with a test
                 69 => {
                     let [size, align] = [vm.read_reg(3).0 as usize, vm.read_reg(4).0 as usize];

lang/src/son.rs

@@ -4591,6 +4591,7 @@ impl<'a> Codegen<'a> {
                     _ => {}
                 }
                 self.assert_ty(func.pos(), caller, ty, fa!("caller argument {}", carg.name));
+                self.strip_ptr(caller);
                 self.add_clobbers(*caller, &mut clobbered_aliases);
                 self.ci.nodes.lock(caller.id);
                 inps.push(caller.id);
@@ -5987,6 +5988,7 @@ mod tests {
         fb_driver;
 
         // Purely Testing Examples;
+        method_receiver_by_value;
         comparing_floating_points;
         pointer_comparison;
         different_function_destinations;