backtrace          39 opal/mca/backtrace/base/backtrace_component.c MCA_BASE_FRAMEWORK_DECLARE(opal, backtrace, NULL, NULL, NULL, NULL,
backtrace          52 opal/mca/backtrace/execinfo/backtrace_execinfo.c     trace_size = backtrace (trace, 32);
backtrace          74 opal/mca/backtrace/execinfo/backtrace_execinfo.c     trace_size = backtrace (trace, 32);