Raymond Toy pushed to branch master at cmucl / cmucl Commits: 6feaee2d by Raymond Toy at 2016-01-16T08:37:03Z Add comment on why RESTORE_FPU is needed. - - - - - 1 changed file: - src/lisp/x86-arch.c Changes: ===================================== src/lisp/x86-arch.c ===================================== --- a/src/lisp/x86-arch.c +++ b/src/lisp/x86-arch.c @@ -320,6 +320,12 @@ sigtrap_handler(HANDLER_ARGS) /* This is just for info in case monitor wants to print an approx */ current_control_stack_pointer = (unsigned long *) SC_SP(os_context); + + /* + * In many places in the switch below, we eventually throw instead + * of returning from the signal handler. So, just in case, set + * the current FPU modes from the saved context. + */ RESTORE_FPU(os_context); /* View it on GitLab: https://gitlab.common-lisp.net/cmucl/cmucl/commit/6feaee2df686c62509f7c2292d...