4 ms·

AFAIK the lifetime of the temporary is defined as being valid until the statement is done. So even printf("%s\n", obj.to_string().c_str()); should be perf

AFAIK the lifetime of the temporary is defined as being valid until the statement is done. So even printf("%s\n", obj.to_string().c_str()); should be perfectly fine.

gumby 3y ago
You are correct for C++, though I don't know if C makes this commitment.
- jstimpfle 3y ago
  This being about C++ and RAII lifetimes, the problem doesn't apply to C. The only similar thing in C would be compound literals. Those have a lifetime like automatic variables (i.e. to the end of the block).
  - gumby 3y ago
    slaps forehead d’oh! My comment was boneheaded in regards to C