gccrs: add ptr to int and int to ptr type cast rules

Added rules to allow type casting pointer as integer types (u*,i*)
and integer types to be casted as pointer.

gcc/rust/ChangeLog:

	* typecheck/rust-casts.cc (TypeCastRules::cast_rules): Add rule.

gcc/testsuite/ChangeLog:

	* rust/compile/ptr_int_cast.rs: New test.

Signed-off-by: Nobel Singh <nobel2073@gmail.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/gcc/testsuite/rust/compile/ptr_int_cast.rs b/gcc/testsuite/rust/compile/ptr_int_cast.rs
new file mode 100644
index 0000000..3a2a5d5
--- /dev/null
+++ b/gcc/testsuite/rust/compile/ptr_int_cast.rs
@@ -0,0 +1,18 @@
+fn main(){
+    let foo = 1337;
+    let bar_ptr = &foo as *const i32;
+
+    let bar_ptr_usize = bar_ptr as usize;
+    let bar_ptr_isize = bar_ptr as isize;
+    let bar_ptr_u64 = bar_ptr as u64;
+    let bar_ptr_i64 = bar_ptr as i64;
+    let bar_ptr_i8 = bar_ptr as i8;
+    let bar_ptr_u8 = bar_ptr as u8;
+
+    let _ = bar_ptr_usize as *const i32;
+    let _ = bar_ptr_isize as *const i32;
+    let _ = bar_ptr_u64 as *const i32;
+    let _ = bar_ptr_i64 as *const i32;
+    let _ = bar_ptr_i8 as *const i32;
+    let _ = bar_ptr_u8 as *const i32;
+}