Solaris issue with packed stat structures

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Hi,

I'm the latest source on solaris SPARC and I have BUS errors when generating stats :

Stack looks like this :

0002bac4 sum_stat (17973e, fbc05b38, 1, 0, 0, 22) + 38
 0002cf24 sum_thread_stats (179526, fbc05920, 1, 0, fbd7de7c, 4) + a8
 0003113c __show_run_stats (fe40ad88, 400, 0, 0, 0, 0) + 1124
 000b0b10 fio_backend (0, ffbffcf4, 0, 0, 0, 15c174) + 200
 000e6a40 main     (2, ffbffcf4, ffbffd00, 166130, 0, fefe0180) + c4
 00017844 _start   (0, 0, 0, 0, 0, 0) + 5c

It works fine on intel processors because the hardware is handling the misalignment but on Sparc, it is not handled, so a BUS error is generated

To fix this issue, I have added some padding here :

[...]
uint16_t continue_on_error;
uint16_t continue_on_error_pad;				// <<<<<==== Pading here
uint64_t total_err_count;
uint32_t first_error;
[...]

Thanks
Seb
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