tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/urgent
head:   1227b344de283f96c41de02cde4b26d5290f5302
commit: 1227b344de283f96c41de02cde4b26d5290f5302 [2/2] x86/sigreturn: Use 
SYSCALL_DEFINE0
config: i386-randconfig-x073-201810 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout 1227b344de283f96c41de02cde4b26d5290f5302
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

   In file included from arch/x86/kernel/signal.c:28:0:
>> include/linux/syscalls.h:194:18: error: conflicting types for 'sys_sigreturn'
     asmlinkage long sys_##sname(void)
                     ^
>> arch/x86/kernel/signal.c:605:1: note: in expansion of macro 'SYSCALL_DEFINE0'
    SYSCALL_DEFINE0(sigreturn)
    ^~~~~~~~~~~~~~~
   In file included from arch/x86/kernel/signal.c:45:0:
   arch/x86/include/asm/syscalls.h:37:26: note: previous declaration of 
'sys_sigreturn' was here
    asmlinkage unsigned long sys_sigreturn(void);
                             ^~~~~~~~~~~~~
--
   In file included from arch/x86//kernel/signal.c:28:0:
>> include/linux/syscalls.h:194:18: error: conflicting types for 'sys_sigreturn'
     asmlinkage long sys_##sname(void)
                     ^
   arch/x86//kernel/signal.c:605:1: note: in expansion of macro 
'SYSCALL_DEFINE0'
    SYSCALL_DEFINE0(sigreturn)
    ^~~~~~~~~~~~~~~
   In file included from arch/x86//kernel/signal.c:45:0:
   arch/x86/include/asm/syscalls.h:37:26: note: previous declaration of 
'sys_sigreturn' was here
    asmlinkage unsigned long sys_sigreturn(void);
                             ^~~~~~~~~~~~~

vim +/sys_sigreturn +194 include/linux/syscalls.h

bed1ffca Frederic Weisbecker 2009-03-13  191  
bed1ffca Frederic Weisbecker 2009-03-13  192  #define SYSCALL_DEFINE0(sname)    
                                \
99e621f7 Al Viro             2013-03-05  193    SYSCALL_METADATA(_##sname, 0);  
                        \
bed1ffca Frederic Weisbecker 2009-03-13 @194    asmlinkage long 
sys_##sname(void)
bed1ffca Frederic Weisbecker 2009-03-13  195  

:::::: The code at line 194 was first introduced by commit
:::::: bed1ffca022cc876fb83161d26670e9b5d3cf36b tracing/syscalls: core 
infrastructure for syscalls tracing, enhancements

:::::: TO: Frederic Weisbecker <fweis...@gmail.com>
:::::: CC: Ingo Molnar <mi...@elte.hu>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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