syscalls: enable getting functions from stack #2062

Annotations

10 warnings

ignoring return value of 'fgets' declared with attribute 'warn_unused_result' [-Wunused-result]

ignoring return value of 'write' declared with attribute 'warn_unused_result' [-Wunused-result]

ignoring return value of 'pipe' declared with attribute 'warn_unused_result' [-Wunused-result]

ignoring return value of 'write' declared with attribute 'warn_unused_result' [-Wunused-result]

format not a string literal and no format arguments [-Wformat-security]

#warning "poweroff unsupported, using halt as fallback" [-Wcpp]

variable 'from_getty' set but not used [-Wunused-but-set-variable]

unsigned conversion from 'int' to 'unsigned char' changes value from '4096' to '0' [-Woverflow]