http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55548
--- Comment #3 from janus at gcc dot gnu.org 2012-12-03 22:19:27 UTC --- (In reply to comment #0) > However, the precision claimed by the COUNT_RATE argument should better match > the actual precision (also with default flags!). > > > Possible solutions: > 1) Use a nanosecond COUNT_RATE only when -lrt is given, and microsecond > otherwise. This has been implemented in r194105. Leftover to-do item: > Using SYSTEM_CLOCK with integer(16) arguments currently results in: > sysclock.f90:(.text+0x455): undefined reference to `_gfortran_system_clock_16' ... add an integer(16) version of SYSTEM_CLOCK!