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-rw-r--r--libc/arch-x86/syscalls/dup2.S3
1 files changed, 2 insertions, 1 deletions
diff --git a/libc/arch-x86/syscalls/dup2.S b/libc/arch-x86/syscalls/dup2.S
index 43def66d2..7558f567c 100644
--- a/libc/arch-x86/syscalls/dup2.S
+++ b/libc/arch-x86/syscalls/dup2.S
@@ -1,4 +1,5 @@
/* autogenerated by gensyscalls.py */
+#include <linux/err.h>
#include <machine/asm.h>
#include <sys/linux-syscalls.h>
@@ -9,7 +10,7 @@ ENTRY(dup2)
mov 16(%esp), %ecx
movl $__NR_dup2, %eax
int $0x80
- cmpl $-129, %eax
+ cmpl $-MAX_ERRNO, %eax
jb 1f
negl %eax
pushl %eax