From 742d588b3a2fc73c4bf6802f4ea37edb2534226f Mon Sep 17 00:00:00 2001
From: Sobeston <15335529+Sobeston@users.noreply.github.com>
Date: Sat, 22 May 2021 05:04:53 +0100
Subject: [PATCH] std.os: munmap takes a const pointer

---
 lib/std/c.zig  | 2 +-
 lib/std/os.zig | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/std/c.zig b/lib/std/c.zig
index acfc6b34f7..1d60af6747 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -96,7 +96,7 @@ pub extern "c" fn pwritev(fd: c_int, iov: [*]const iovec_const, iovcnt: c_uint,
 pub extern "c" fn write(fd: fd_t, buf: [*]const u8, nbyte: usize) isize;
 pub extern "c" fn pwrite(fd: fd_t, buf: [*]const u8, nbyte: usize, offset: off_t) isize;
 pub extern "c" fn mmap(addr: ?*align(page_size) c_void, len: usize, prot: c_uint, flags: c_uint, fd: fd_t, offset: off_t) *c_void;
-pub extern "c" fn munmap(addr: *align(page_size) c_void, len: usize) c_int;
+pub extern "c" fn munmap(addr: *align(page_size) const c_void, len: usize) c_int;
 pub extern "c" fn mprotect(addr: *align(page_size) c_void, len: usize, prot: c_uint) c_int;
 pub extern "c" fn link(oldpath: [*:0]const u8, newpath: [*:0]const u8, flags: c_int) c_int;
 pub extern "c" fn linkat(oldfd: fd_t, oldpath: [*:0]const u8, newfd: fd_t, newpath: [*:0]const u8, flags: c_int) c_int;
diff --git a/lib/std/os.zig b/lib/std/os.zig
index 601839ea1c..93d0b9832d 100644
--- a/lib/std/os.zig
+++ b/lib/std/os.zig
@@ -3792,7 +3792,7 @@ pub fn mmap(
 /// Zig's munmap function does not, for two reasons:
 /// * It violates the Zig principle that resource deallocation must succeed.
 /// * The Windows function, VirtualFree, has this restriction.
-pub fn munmap(memory: []align(mem.page_size) u8) void {
+pub fn munmap(memory: []align(mem.page_size) const u8) void {
     switch (errno(system.munmap(memory.ptr, memory.len))) {
         0 => return,
         EINVAL => unreachable, // Invalid parameters.