[Bug sanitizer/121222] New: add support for -fsanitize-coverage=stack-depth

[kees at outflux dot net via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121222

            Bug ID: 121222
           Summary: add support for -fsanitize-coverage=stack-depth
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kees at outflux dot net
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
  Target Milestone: ---

GCC lacks support for stack depth tracing via -fsanitize-coverage. Clang
supports both direct instrumentation and callbacks:
https://clang.llvm.org/docs/SanitizerCoverage.html#tracing-stack-depth

The Linux kernel depends on callbacks for its use of the stack depth tracer.