https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84856
David Abdurachmanov <david.abdurachmanov at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |david.abdurachmanov at gmail dot c | |om --- Comment #1 from David Abdurachmanov <david.abdurachmanov at gmail dot com> --- I am using bdba439399552531c0fe82da5037386715f07940 (git) or r258481 (svn) and I hit the same issue: ../../gcc/calls.c: In function ‘poly_int64 compute_argument_block_size(int, args_size*, tree, tree, int)’: ../../gcc/calls.c:2201:60: error: comparison of integer expressions of different signedness: ‘int’ and ‘unsigned int’ [-Werror=sign-compare] if (ACCUMULATE_OUTGOING_ARGS && preferred_stack_boundary > STACK_BOUNDARY)