SFN: don't drop markers for skipping var-tracking
Although debug markers are more useful when bind stmts are placed
among them, there is value in keeping them even when VTA limits are
exceeded.
for gcc/ChangeLog
PR debug/83422
* var-tracking.c (vt_debug_insns_local): Do not drop markers.
(variable_tracking_main_1): Keep markers even when VTA fails.
for gcc/testsuite/ChangeLog
PR debug/83422
* gcc.dg/pr83422.c: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@255834 138bc75d-0d04-0410-961f-82ee72b054a4