zig

commit 59e33b447b0502bdfa18909f4381360bb8f49b70 (tree)
parent 56cfa8f22f69d813efedb1fa01fdcb7077ca0e5a
Author: biexelar <biexelar@disroot.org>
Date:   Wed, 31 Aug 2022 02:31:47 +0000

std.Thread: fix freeAndExit on x86_64-linux (#12693)

Previously, this function used incorrect registers for the munmap syscall, leading to detached threads not cleaning up.

closes #12690

Co-authored-by: bxlr <biexelar@diroot.org>
Diffstat:
M
lib/std/Thread.zig
 | 
7
++-----

1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/lib/std/Thread.zig b/lib/std/Thread.zig
@@ -769,16 +769,13 @@ const LinuxThreadImpl = struct {
                 ),
                 .x86_64 => asm volatile (
                     \\  movq $11, %%rax
-                    \\  movq %[ptr], %%rbx
-                    \\  movq %[len], %%rcx
                     \\  syscall
                     \\  movq $60, %%rax
                     \\  movq $1, %%rdi
                     \\  syscall
                     :
-                    : [ptr] "r" (@ptrToInt(self.mapped.ptr)),
-                      [len] "r" (self.mapped.len),
-                    : "memory"
+                    : [ptr] "{rdi}" (@ptrToInt(self.mapped.ptr)),
+                      [len] "{rsi}" (self.mapped.len),
                 ),
                 .arm, .armeb, .thumb, .thumbeb => asm volatile (
                     \\  mov r7, #91