For targets where the ABI mandates structure layout that has
no padding, like cris-elf, this test started failing when
introduced as an add-on to the existing 1.cc, thereby
effectively causing a regression in testsuite results.
Adding an empty structure to S0, corresponds better to the
layout of hh_mm_ss<seconds>.
PR testsuite/108632
* testsuite/std/time/hh_mm_ss/1.cc (size): Add empty
struct at end of S0.
Hans-Peter Nilsson
a939dd8357