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    SubjectRe: Mixing egcs and gcc- compiled code: struct alignment issues?
    On Tue, 20 Jul 1999, Steve Dodd wrote:

    > Does this mean that the compilers are padding struct inode *differently*,
    > resulting in u.generic_ip being at different offsets? That's a nightmare :(

    I've been bitten by this before. The linux kernel source is at
    fault, classic example is in include/asm-i386/spinlock.h

    #if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8)
    typedef struct { } rwlock_t;
    #define RW_LOCK_UNLOCKED (rwlock_t) { }
    typedef struct { int gcc_is_buggy; } rwlock_t;
    #define RW_LOCK_UNLOCKED (rwlock_t) { 0 }

    Any structure incorporating these lock types will thus be differing sizes
    depending on your version of gcc. grep the source carefully for "GNUC"

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