File:  [Qemu by Fabrice Bellard] / qemu / compiler.h
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 18:56:03 2018 UTC (3 years, 1 month ago) by root
Branches: qemu, MAIN
CVS tags: qemu1000, qemu0151, HEAD
qemu 0.15.1

    1: /* public domain */
    2: 
    3: #ifndef COMPILER_H
    4: #define COMPILER_H
    5: 
    6: #include "config-host.h"
    7: 
    8: #define QEMU_NORETURN __attribute__ ((__noreturn__))
    9: #ifdef CONFIG_GCC_ATTRIBUTE_WARN_UNUSED_RESULT
   10: #define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
   11: #else
   12: #define QEMU_WARN_UNUSED_RESULT
   13: #endif
   14: 
   15: #define QEMU_BUILD_BUG_ON(x) \
   16:     typedef char qemu_build_bug_on__##__LINE__[(x)?-1:1];
   17: 
   18: #if defined __GNUC__
   19: # if (__GNUC__ < 4) || \
   20:      defined(__GNUC_MINOR__) && (__GNUC__ == 4) && (__GNUC_MINOR__ < 4)
   21:    /* gcc versions before 4.4.x don't support gnu_printf, so use printf. */
   22: #  define GCC_ATTR __attribute__((__unused__, format(printf, 1, 2)))
   23: #  define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m)))
   24: # else
   25:    /* Use gnu_printf when supported (qemu uses standard format strings). */
   26: #  define GCC_ATTR __attribute__((__unused__, format(gnu_printf, 1, 2)))
   27: #  define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
   28: # endif
   29: #else
   30: #define GCC_ATTR /**/
   31: #define GCC_FMT_ATTR(n, m)
   32: #endif
   33: 
   34: #endif /* COMPILER_H */

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