Function cont_get_free_stack is not available anymore

[lmarmisa]

The new release 2.4.2 includes this change:

. Move continuation stack from .bss onto sys stack, saving 4kB of RAM, if WPS is not needed (#4622)

But there is a side effect: the function cont_get_free_stack(&g_cont) [cont.h] does not work because the variable g_cont is not defined anymore (file core_esp8266_main.cpp).

My programs include stack statistics but I am unable to maintain this feature if I use the new release 2.4.2.

[d-a-v]

Is it working with g_pcont instead of &g_cont ?

[lmarmisa]

Yes, g_pcont did the trick. Thanks for your help.

I did not use the variable g_pcont before because this comment [core_esp8266_main.cpp] confused me:

/* Not static, used in core_esp8266_postmortem.c.
 * Placed into noinit section because we assign value to this variable
 * before .bss is zero-filled, and need to preserve the value.
 */
cont_t* g_pcont __attribute__((section(".noinit")));

(edit: ` -> ```)

[devyte]

This is stupid. We need an interface for free stack in ESPClass as a wrapper to this.

[devyte]

@lmarmisa please test #5133 . Instead of using cont_get_free_stack(g_pcont), just use ESP.getFreeContStack().