acassis commented on issue #13884:
URL: https://github.com/apache/nuttx/issues/13884#issuecomment-4939311137
@raiden00pl I faced this same issue today, even with FS_PROC enabled the
free still not available, I think the root cause is an inverted logic error
here:
```
/* nsh_catfile used by cat, ifconfig, ifup/down, df, free, env, irqinfo, and
* mount (with no arguments).
*/
#if !defined(CONFIG_NSH_DISABLE_CAT) &&
!defined(CONFIG_NSH_DISABLE_IFCONFIG) && \
!defined(CONFIG_NSH_DISABLE_IFUPDOWN) && !defined(CONFIG_NSH_DISABLE_DF)
&& \
!defined(CONFIG_NSH_DISABLE_FREE) && !defined(CONFIG_NSH_DISABLE_ENV) &&
\
!defined(HAVE_IRQINFO) && !defined(HAVE_MOUNT_LIST)
# undef NSH_HAVE_CATFILE
#endif
```
Seems like this inverted logic is incorrect. !A && !B => A || B, in case
even if CONFIG_NSH_DISABLE_CAT is not disabled, it will be undefine
NSH_HAVE_CATFILE if any of other NSH_DISABLED_xxx is defined.
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