Hi Andrzej, [auto build test ERROR on v4.4-rc5] [also build test ERROR on next-20151217]
url: https://github.com/0day-ci/linux/commits/Andrzej-Hajda/err-h-add-type-checking-to-IS_ERR_VALUE-macro/20151218-185839 config: i386-tinyconfig (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): include/linux/bug.h: Assembler messages: >> include/linux/bug.h:7: Error: no such instruction: `enum bug_trap_type {' >> include/linux/bug.h:8: Error: junk at end of line, first unrecognized >> character is `,' include/linux/bug.h:9: Error: junk at end of line, first unrecognized character is `,' include/linux/bug.h:10: Error: junk at end of line, first unrecognized character is `,' include/linux/bug.h:11: Error: junk at end of line, first unrecognized character is `}' >> include/linux/bug.h:13: Error: no such instruction: `struct pt_regs' >> include/linux/bug.h:105: Error: no such instruction: `static inline enum >> bug_trap_type report_bug(unsigned long bug_addr,' >> include/linux/bug.h:106: Error: no such instruction: `struct pt_regs *regs)' include/linux/bug.h:107: Error: junk at end of line, first unrecognized character is `{' >> include/linux/bug.h:108: Error: no such instruction: `return >> BUG_TRAP_TYPE_BUG' include/linux/bug.h:109: Error: junk at end of line, first unrecognized character is `}' vim +7 include/linux/bug.h 7664c5a1d Jeremy Fitzhardinge 2006-12-08 1 #ifndef _LINUX_BUG_H 7664c5a1d Jeremy Fitzhardinge 2006-12-08 2 #define _LINUX_BUG_H 7664c5a1d Jeremy Fitzhardinge 2006-12-08 3 7664c5a1d Jeremy Fitzhardinge 2006-12-08 4 #include <asm/bug.h> a3ccc497c Daniel Santos 2013-02-21 5 #include <linux/compiler.h> 7664c5a1d Jeremy Fitzhardinge 2006-12-08 6 7664c5a1d Jeremy Fitzhardinge 2006-12-08 @7 enum bug_trap_type { 7664c5a1d Jeremy Fitzhardinge 2006-12-08 @8 BUG_TRAP_TYPE_NONE = 0, 7664c5a1d Jeremy Fitzhardinge 2006-12-08 9 BUG_TRAP_TYPE_WARN = 1, 7664c5a1d Jeremy Fitzhardinge 2006-12-08 10 BUG_TRAP_TYPE_BUG = 2, 7664c5a1d Jeremy Fitzhardinge 2006-12-08 11 }; 7664c5a1d Jeremy Fitzhardinge 2006-12-08 12 608e26196 Heiko Carstens 2007-07-15 @13 struct pt_regs; 608e26196 Heiko Carstens 2007-07-15 14 35edd9103 Paul Gortmaker 2011-11-16 15 #ifdef __CHECKER__ ca623c914 Daniel Santos 2013-02-21 16 #define BUILD_BUG_ON_NOT_POWER_OF_2(n) (0) 35edd9103 Paul Gortmaker 2011-11-16 17 #define BUILD_BUG_ON_ZERO(e) (0) 35edd9103 Paul Gortmaker 2011-11-16 18 #define BUILD_BUG_ON_NULL(e) ((void*)0) c5782e9f5 Tushar Behera 2012-11-26 19 #define BUILD_BUG_ON_INVALID(e) (0) 9a8ab1c39 Daniel Santos 2013-02-21 20 #define BUILD_BUG_ON_MSG(cond, msg) (0) ca623c914 Daniel Santos 2013-02-21 21 #define BUILD_BUG_ON(condition) (0) 35edd9103 Paul Gortmaker 2011-11-16 22 #define BUILD_BUG() (0) 35edd9103 Paul Gortmaker 2011-11-16 23 #else /* __CHECKER__ */ 35edd9103 Paul Gortmaker 2011-11-16 24 35edd9103 Paul Gortmaker 2011-11-16 25 /* Force a compilation error if a constant expression is not a power of 2 */ 35edd9103 Paul Gortmaker 2011-11-16 26 #define BUILD_BUG_ON_NOT_POWER_OF_2(n) \ 35edd9103 Paul Gortmaker 2011-11-16 27 BUILD_BUG_ON((n) == 0 || (((n) & ((n) - 1)) != 0)) 35edd9103 Paul Gortmaker 2011-11-16 28 35edd9103 Paul Gortmaker 2011-11-16 29 /* Force a compilation error if condition is true, but also produce a 35edd9103 Paul Gortmaker 2011-11-16 30 result (of value 0 and type size_t), so the expression can be used 35edd9103 Paul Gortmaker 2011-11-16 31 e.g. in a structure initializer (or where-ever else comma expressions 35edd9103 Paul Gortmaker 2011-11-16 32 aren't permitted). */ 35edd9103 Paul Gortmaker 2011-11-16 33 #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); })) 35edd9103 Paul Gortmaker 2011-11-16 34 #define BUILD_BUG_ON_NULL(e) ((void *)sizeof(struct { int:-!!(e); })) 35edd9103 Paul Gortmaker 2011-11-16 35 baf05aa92 Konstantin Khlebnikov 2012-05-29 36 /* baf05aa92 Konstantin Khlebnikov 2012-05-29 37 * BUILD_BUG_ON_INVALID() permits the compiler to check the validity of the baf05aa92 Konstantin Khlebnikov 2012-05-29 38 * expression but avoids the generation of any code, even if that expression baf05aa92 Konstantin Khlebnikov 2012-05-29 39 * has side-effects. baf05aa92 Konstantin Khlebnikov 2012-05-29 40 */ baf05aa92 Konstantin Khlebnikov 2012-05-29 41 #define BUILD_BUG_ON_INVALID(e) ((void)(sizeof((__force long)(e)))) baf05aa92 Konstantin Khlebnikov 2012-05-29 42 35edd9103 Paul Gortmaker 2011-11-16 43 /** 9a8ab1c39 Daniel Santos 2013-02-21 44 * BUILD_BUG_ON_MSG - break compile if a condition is true & emit supplied 9a8ab1c39 Daniel Santos 2013-02-21 45 * error message. 9a8ab1c39 Daniel Santos 2013-02-21 46 * @condition: the condition which the compiler should know is false. 9a8ab1c39 Daniel Santos 2013-02-21 47 * 9a8ab1c39 Daniel Santos 2013-02-21 48 * See BUILD_BUG_ON for description. 9a8ab1c39 Daniel Santos 2013-02-21 49 */ 9a8ab1c39 Daniel Santos 2013-02-21 50 #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) 9a8ab1c39 Daniel Santos 2013-02-21 51 9a8ab1c39 Daniel Santos 2013-02-21 52 /** 35edd9103 Paul Gortmaker 2011-11-16 53 * BUILD_BUG_ON - break compile if a condition is true. 35edd9103 Paul Gortmaker 2011-11-16 54 * @condition: the condition which the compiler should know is false. 35edd9103 Paul Gortmaker 2011-11-16 55 * 35edd9103 Paul Gortmaker 2011-11-16 56 * If you have some code which relies on certain constants being equal, or a3ccc497c Daniel Santos 2013-02-21 57 * some other compile-time-evaluated condition, you should use BUILD_BUG_ON to 35edd9103 Paul Gortmaker 2011-11-16 58 * detect if someone changes it. 35edd9103 Paul Gortmaker 2011-11-16 59 * a3ccc497c Daniel Santos 2013-02-21 60 * The implementation uses gcc's reluctance to create a negative array, but gcc a3ccc497c Daniel Santos 2013-02-21 61 * (as of 4.4) only emits that error for obvious cases (e.g. not arguments to a3ccc497c Daniel Santos 2013-02-21 62 * inline functions). Luckily, in 4.3 they added the "error" function a3ccc497c Daniel Santos 2013-02-21 63 * attribute just for this type of case. Thus, we use a negative sized array a3ccc497c Daniel Santos 2013-02-21 64 * (should always create an error on gcc versions older than 4.4) and then call a3ccc497c Daniel Santos 2013-02-21 65 * an undefined function with the error attribute (should always create an a3ccc497c Daniel Santos 2013-02-21 66 * error on gcc 4.3 and later). If for some reason, neither creates a a3ccc497c Daniel Santos 2013-02-21 67 * compile-time error, we'll still have a link-time error, which is harder to a3ccc497c Daniel Santos 2013-02-21 68 * track down. 35edd9103 Paul Gortmaker 2011-11-16 69 */ 35edd9103 Paul Gortmaker 2011-11-16 70 #ifndef __OPTIMIZE__ 35edd9103 Paul Gortmaker 2011-11-16 71 #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) 35edd9103 Paul Gortmaker 2011-11-16 72 #else 35edd9103 Paul Gortmaker 2011-11-16 73 #define BUILD_BUG_ON(condition) \ 9a8ab1c39 Daniel Santos 2013-02-21 74 BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) 35edd9103 Paul Gortmaker 2011-11-16 75 #endif 35edd9103 Paul Gortmaker 2011-11-16 76 35edd9103 Paul Gortmaker 2011-11-16 77 /** 35edd9103 Paul Gortmaker 2011-11-16 78 * BUILD_BUG - break compile if used. 35edd9103 Paul Gortmaker 2011-11-16 79 * 35edd9103 Paul Gortmaker 2011-11-16 80 * If you have some code that you expect the compiler to eliminate at 35edd9103 Paul Gortmaker 2011-11-16 81 * build time, you should use BUILD_BUG to detect if it is 35edd9103 Paul Gortmaker 2011-11-16 82 * unexpectedly used. 35edd9103 Paul Gortmaker 2011-11-16 83 */ 9a8ab1c39 Daniel Santos 2013-02-21 84 #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed") 35edd9103 Paul Gortmaker 2011-11-16 85 35edd9103 Paul Gortmaker 2011-11-16 86 #endif /* __CHECKER__ */ 35edd9103 Paul Gortmaker 2011-11-16 87 7664c5a1d Jeremy Fitzhardinge 2006-12-08 88 #ifdef CONFIG_GENERIC_BUG 7664c5a1d Jeremy Fitzhardinge 2006-12-08 89 #include <asm-generic/bug.h> 7664c5a1d Jeremy Fitzhardinge 2006-12-08 90 7664c5a1d Jeremy Fitzhardinge 2006-12-08 91 static inline int is_warning_bug(const struct bug_entry *bug) 7664c5a1d Jeremy Fitzhardinge 2006-12-08 92 { 7664c5a1d Jeremy Fitzhardinge 2006-12-08 93 return bug->flags & BUGFLAG_WARNING; 7664c5a1d Jeremy Fitzhardinge 2006-12-08 94 } 7664c5a1d Jeremy Fitzhardinge 2006-12-08 95 7664c5a1d Jeremy Fitzhardinge 2006-12-08 96 const struct bug_entry *find_bug(unsigned long bugaddr); 7664c5a1d Jeremy Fitzhardinge 2006-12-08 97 608e26196 Heiko Carstens 2007-07-15 98 enum bug_trap_type report_bug(unsigned long bug_addr, struct pt_regs *regs); 7664c5a1d Jeremy Fitzhardinge 2006-12-08 99 7664c5a1d Jeremy Fitzhardinge 2006-12-08 100 /* These are defined by the architecture */ 7664c5a1d Jeremy Fitzhardinge 2006-12-08 101 int is_valid_bugaddr(unsigned long addr); 7664c5a1d Jeremy Fitzhardinge 2006-12-08 102 7664c5a1d Jeremy Fitzhardinge 2006-12-08 103 #else /* !CONFIG_GENERIC_BUG */ 7664c5a1d Jeremy Fitzhardinge 2006-12-08 104 608e26196 Heiko Carstens 2007-07-15 @105 static inline enum bug_trap_type report_bug(unsigned long bug_addr, 608e26196 Heiko Carstens 2007-07-15 @106 struct pt_regs *regs) 7664c5a1d Jeremy Fitzhardinge 2006-12-08 107 { 7664c5a1d Jeremy Fitzhardinge 2006-12-08 @108 return BUG_TRAP_TYPE_BUG; 7664c5a1d Jeremy Fitzhardinge 2006-12-08 109 } 7664c5a1d Jeremy Fitzhardinge 2006-12-08 110 7664c5a1d Jeremy Fitzhardinge 2006-12-08 111 #endif /* CONFIG_GENERIC_BUG */ :::::: The code at line 7 was first introduced by commit :::::: 7664c5a1da4711bb6383117f51b94c8dc8f3f1cd [PATCH] Generic BUG implementation :::::: TO: Jeremy Fitzhardinge <[email protected]> :::::: CC: Linus Torvalds <[email protected]> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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