Esp32 variable on stack shows up as <unavailable> within Task-function

Thank you,
but well it does not change anything. I changed the flags, cleaned, rebuild and started the debugger.

The compiler flags:
before:

build_unflags = -Os
build_flags = -O1 -ggdb3 -g3

test 1:

build_unflags = -Os
build_flags = -O0 -ggdb3 -g3

test 2:

;build_unflags = -Os
build_flags = -O0 -ggdb3 -g3

I’ m sorry but somehow the picture upload currently does not work.
OK, once the debugger started a popup tells this, and as before the variable within the watch-area is<unavailable>

-var-create: unable to create variable object   
(from var-create watch_3b0b2eef88f0ef62401368661138dcca} @ "num_blink")