From 9ebf25d1458988b6aa75d4608062f18f802c6a38 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Fri, 24 Apr 2020 15:36:08 -0400
Subject: [PATCH] link: change default executable mode to 0o777

Jonathan S writes:

On common systems with a 022 umask, this will still result in a
file created with 755 permissions, but it works appropriately if the
system is configured more leniently. (As another data point, C's fopen
seems to open files with the 666 mode.)
---
 lib/std/mem.zig          | 2 +-
 src-self-hosted/link.zig | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/std/mem.zig b/lib/std/mem.zig
index 5966f8bc9..54b5a8a50 100644
--- a/lib/std/mem.zig
+++ b/lib/std/mem.zig
@@ -2061,7 +2061,7 @@ pub fn alignBackward(addr: usize, alignment: usize) usize {
 /// The alignment must be a power of 2 and greater than 0.
 pub fn alignBackwardGeneric(comptime T: type, addr: T, alignment: T) T {
     assert(@popCount(T, alignment) == 1);
-    // 000010000 // example addr
+    // 000010000 // example alignment
     // 000001111 // subtract 1
     // 111110000 // binary not
     return addr & ~(alignment - 1);
diff --git a/src-self-hosted/link.zig b/src-self-hosted/link.zig
index 9ab462e32..cb6aa40af 100644
--- a/src-self-hosted/link.zig
+++ b/src-self-hosted/link.zig
@@ -7,7 +7,11 @@ const fs = std.fs;
 const elf = std.elf;
 const codegen = @import("codegen.zig");
 
-const executable_mode = 0o755;
+/// On common systems with a 0o022 umask, 0o777 will still result in a file created
+/// with 0o755 permissions, but it works appropriately if the system is configured
+/// more leniently. As another data point, C's fopen seems to open files with the
+/// 666 mode.
+const executable_mode = 0o777;
 const default_entry_addr = 0x8000000;
 
 pub const ErrorMsg = struct {