echo "$USER"
==59370== Invalid read of size 1
==59370== at 0x404785: get_var_value (expand_vars.c:29)
==59370== by 0x404824: update_token (expand_vars.c:47)
==59370== by 0x4048F4: if_variable (expand_vars.c:65)
==59370== by 0x4049AA: expand_variables (expand_vars.c:87)
==59370== by 0x4049FD: handle_variable_expansions (expand_vars.c:97)
==59370== by 0x406F9D: parse_state (parse_state.c:47)
==59370== by 0x404366: main (minishell.c:40)
echo "$USER" ==59370== Invalid read of size 1 ==59370== at 0x404785: get_var_value (expand_vars.c:29) ==59370== by 0x404824: update_token (expand_vars.c:47) ==59370== by 0x4048F4: if_variable (expand_vars.c:65) ==59370== by 0x4049AA: expand_variables (expand_vars.c:87) ==59370== by 0x4049FD: handle_variable_expansions (expand_vars.c:97) ==59370== by 0x406F9D: parse_state (parse_state.c:47) ==59370== by 0x404366: main (minishell.c:40)