[hisi:topic-lpc-4.10-libio 1/2] arch/x86/boot/compressed/../ctype.h:14:9: sparse: Trying to use reserved word 'if' as identifier

[kbuild test robot]

tree:   https://github.com/hisilicon/linux-hisi topic-lpc-4.10-libio
head:   06443d85dc35b64a704f7be84cc538281a1598f4
commit: 4963ab639c628204056ef81b89c8cf2d628a2dae [1/2] libio: eliminate some compile errors
reproduce:
        # apt-get install sparse
        git checkout 4963ab639c628204056ef81b89c8cf2d628a2dae
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

   arch/x86/boot/compressed/../ctype.h:4:19: sparse: multiple definitions for function 'isdigit'
   include/linux/ctype.h:25:19:  the previous one is here
   arch/x86/boot/compressed/../ctype.h:9:19: sparse: Expected ) at end of cast operator
   arch/x86/boot/compressed/../ctype.h:9:19: sparse: got ch
   arch/x86/boot/compressed/../ctype.h:14:13: sparse: Expected ) in function declarator
   arch/x86/boot/compressed/../ctype.h:14:13: sparse: got (
>> arch/x86/boot/compressed/../ctype.h:14:9: sparse: Trying to use reserved word 'if' as identifier
   arch/x86/boot/compressed/../ctype.h:17:20: sparse: Expected ) in function declarator
   arch/x86/boot/compressed/../ctype.h:17:20: sparse: got >=
>> arch/x86/boot/compressed/../ctype.h:17:9: sparse: Trying to use reserved word 'return' as identifier
   arch/x86/boot/compressed/../ctype.h:18:1: sparse: Expected ; at the end of type declaration
   arch/x86/boot/compressed/../ctype.h:18:1: sparse: got }
   In file included from arch/x86/boot/compressed/misc.h:24:0,
                    from arch/x86/boot/compressed/cmdline.c:1:
   arch/x86/boot/compressed/../ctype.h:4:19: error: redefinition of 'isdigit'
    static inline int isdigit(int ch)
                      ^~~~~~~
   In file included from include/acpi/platform/aclinux.h:82:0,
                    from include/acpi/platform/acenv.h:185,
                    from include/acpi/acpi.h:56,
                    from include/linux/acpi.h:33,
                    from include/linux/libio.h:23,
                    from include/linux/io.h:27,
                    from arch/x86/boot/compressed/misc.h:17,
                    from arch/x86/boot/compressed/cmdline.c:1:
   include/linux/ctype.h:25:19: note: previous definition of 'isdigit' was here
    static inline int isdigit(int c)
                      ^~~~~~~
   arch/x86/boot/compressed/../ctype.h:9:32: error: expected ')' before 'ch'
    static inline int isxdigit(int ch)
                                   ^
   include/linux/ctype.h:20:50: note: in definition of macro '__ismask'
    #define __ismask(x) (_ctype[(int)(unsigned char)(x)])
                                                     ^
   arch/x86/boot/compressed/../ctype.h:9:19: note: in expansion of macro 'isxdigit'
    static inline int isxdigit(int ch)
                      ^~~~~~~~
   include/linux/ctype.h:20:52: error: expected expression before ']' token
    #define __ismask(x) (_ctype[(int)(unsigned char)(x)])
                                                       ^
   include/linux/ctype.h:36:23: note: in expansion of macro '__ismask'
    #define isxdigit(c) ((__ismask(c)&(_D|_X)) != 0)
                          ^~~~~~~~
   arch/x86/boot/compressed/../ctype.h:9:19: note: in expansion of macro 'isxdigit'
    static inline int isxdigit(int ch)
                      ^~~~~~~~
   include/linux/ctype.h:36:44: error: expected ')' before '!=' token
    #define isxdigit(c) ((__ismask(c)&(_D|_X)) != 0)
                                               ^
   arch/x86/boot/compressed/../ctype.h:9:19: note: in expansion of macro 'isxdigit'
    static inline int isxdigit(int ch)
                      ^~~~~~~~

vim +/if +14 arch/x86/boot/compressed/../ctype.h

60b217a0 arch/x86/boot/ctype.h   Alexander Kuleshov 2015-01-03   1  #ifndef BOOT_CTYPE_H
60b217a0 arch/x86/boot/ctype.h   Alexander Kuleshov 2015-01-03   2  #define BOOT_CTYPE_H
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02   3  
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02  @4  static inline int isdigit(int ch)
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02   5  {
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02   6  	return (ch >= '0') && (ch <= '9');
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02   7  }
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02   8  
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02   9  static inline int isxdigit(int ch)
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02  10  {
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02  11  	if (isdigit(ch))
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02  12  		return true;
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02  13  
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02 @14  	if ((ch >= 'a') && (ch <= 'f'))
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02  15  		return true;
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02  16  
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02 @17  	return (ch >= 'A') && (ch <= 'F');
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02  18  }
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02  19  
f4ed2877 arch/x86/boot/isdigit.h Yinghai Lu         2010-08-02  20  #endif

:::::: The code at line 14 was first introduced by commit
:::::: f4ed2877b16e8146427306aea8819adac5c88374 x86, setup: reorganize the early console setup

:::::: TO: Yinghai Lu <yinghai at kernel.org>
:::::: CC: H. Peter Anvin <hpa at linux.intel.com>

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