libc: switch `free` to the proper signature

This does not attempt to fully propagate the mutability everywhere, but
gives new code a hint to avoid the same issues.

2 files changed, 3 insertions, 3 deletions

diff --git a/src/libextra/c_vec.rs b/src/libextra/c_vec.rs
index fc2caa13584..35a6ccaa708 100644
--- a/src/libextra/c_vec.rs
+++ b/src/libextra/c_vec.rs
@@ -172,7 +172,7 @@ mod tests {
             let mem = malloc_raw(n);
 
             CVec::new_with_dtor(mem as *mut u8, n,
-                proc() { libc::free(mem as *c_void); })
+                proc() { libc::free(mem as *mut c_void); })
         }
     }
 
diff --git a/src/libextra/flate.rs b/src/libextra/flate.rs
index 1153c3a6ef3..faceb17af47 100644
--- a/src/libextra/flate.rs
+++ b/src/libextra/flate.rs
@@ -53,7 +53,7 @@ fn deflate_bytes_internal(bytes: &[u8], flags: c_int) -> ~[u8] {
         assert!(res as int != 0);
             let out = vec::raw::from_buf_raw(res as *u8,
                                              outsz as uint);
-        libc::free(res);
+        libc::free(res as *mut c_void);
         out
     }
 }
@@ -76,7 +76,7 @@ fn inflate_bytes_internal(bytes: &[u8], flags: c_int) -> ~[u8] {
         assert!(res as int != 0);
         let out = vec::raw::from_buf_raw(res as *u8,
                                          outsz as uint);
-        libc::free(res);
+        libc::free(res as *mut c_void);
         out
     }
 }