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From: Adhemerval Zanella <azanella@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc] linux: Use long int for syscall return value Date: Wed, 7 Dec 2022 13:48:58 +0000 (GMT) [thread overview] Message-ID: <20221207134858.7966D383556C@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=36d423e2032e98305799071b831691fc4c06deea commit 36d423e2032e98305799071b831691fc4c06deea Author: Xing Li <lixing@loongson.cn> Date: Tue Nov 29 19:24:43 2022 +0800 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: --- sysdeps/unix/sysv/linux/syscall.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sysdeps/unix/sysv/linux/syscall.c b/sysdeps/unix/sysv/linux/syscall.c index 7303ba7188..8cb0b66b1c 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);
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