From 149bc79486907745c8ffb12a69f65189b26c6dbe Mon Sep 17 00:00:00 2001
From: Jacob G-W <jacoblevgw@gmail.com>
Date: Sat, 13 Nov 2021 12:52:17 -0500
Subject: [PATCH] add tests for previous commit

---
 src/link/Elf.zig |  2 +-
 test/cases.zig   | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/src/link/Elf.zig b/src/link/Elf.zig
index 9cad77d427..01b36b322f 100644
--- a/src/link/Elf.zig
+++ b/src/link/Elf.zig
@@ -2604,7 +2604,7 @@ fn addDbgInfoType(self: *Elf, ty: Type, dbg_info_buffer: *std.ArrayList(u8)) !vo
                 // DW.AT.name,  DW.FORM.string
                 try dbg_info_buffer.writer().print("{}\x00", .{ty});
             } else {
-                log.err("TODO implement .debug_info for type '{}'", .{ty});
+                log.warn("TODO implement .debug_info for type '{}'", .{ty});
                 try dbg_info_buffer.append(abbrev_pad1);
             }
         },
diff --git a/test/cases.zig b/test/cases.zig
index 3a8389f7d4..eb0b8fb8b9 100644
--- a/test/cases.zig
+++ b/test/cases.zig
@@ -1819,4 +1819,36 @@ pub fn addCases(ctx: *TestContext) !void {
             ":2:28: error: cannot set address space of local variable 'foo'",
         });
     }
+    {
+        var case = ctx.exe("issue 10138: callee preserved regs working", linux_x64);
+        case.addCompareOutput(
+            \\pub fn main() void {
+            \\    const fd = open();
+            \\    _ = write(fd, "a", 1);
+            \\    _ = close(fd);
+            \\}
+            \\
+            \\fn open() usize {
+            \\    return 42;
+            \\}
+            \\
+            \\fn write(fd: usize, a: [*]const u8, len: usize) usize {
+            \\    return syscall4(.WRITE, fd, @ptrToInt(a), len);
+            \\}
+            \\
+            \\fn syscall4(n: enum { WRITE }, a: usize, b: usize, c: usize) usize {
+            \\    _ = n;
+            \\    _ = a;
+            \\    _ = b;
+            \\    _ = c;
+            \\    return 23;
+            \\}
+            \\
+            \\fn close(fd: usize) usize {
+            \\    if (fd != 42)
+            \\        unreachable;
+            \\    return 0;
+            \\}
+        , "");
+    }
 }