From: Xing Li <lixing@loongson.cn>
Date: Tue, 29 Nov 2022 11:24:43 +0000 (+0800)
Subject: linux: Use long int for syscall return value
X-Git-Tag: glibc-2.37~119
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=36d423e2032e98305799071b831691fc4c06deea;p=thirdparty%2Fglibc.git

linux: Use long int for syscall return value

The linux syscall ABI returns long, so the generic syscall code for
linux should use long for the return value.

This fixes the truncation of the return value of the syscall function
when that does not fit into an int.
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
---

diff --git a/sysdeps/unix/sysv/linux/syscall.c b/sysdeps/unix/sysv/linux/syscall.c
index 7303ba71888..8cb0b66b1ca 100644
--- a/sysdeps/unix/sysv/linux/syscall.c
+++ b/sysdeps/unix/sysv/linux/syscall.c
@@ -33,7 +33,7 @@ syscall (long int number, ...)
   long int a5 = va_arg (args, long int);
   va_end (args);
 
-  int r = INTERNAL_SYSCALL_NCS_CALL (number, a0, a1, a2, a3, a4, a5);
+  long int r = INTERNAL_SYSCALL_NCS_CALL (number, a0, a1, a2, a3, a4, a5);
   if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (r)))
     {
       __set_errno (-r);