Compiler Crashed on Specific Macro

Hi all,
I defined a macro as

#define min(a,b)       (((a) < (b)) ? (a) : (b))

and used it as

xfr_cnt = min(to_xfer, secsize - boff);

but every time compiler crashed on this C file. It is ok after I expanded it as

xfr_cnt= ((to_xfer < (secsize - boff)) ? (to_xfer) : (secsize - boff));

Strange huh? Please help!