Xcode breakpoints: dotted blue outline

Question

I'm attempting to debug some code in Xcode. When I enable a breakpoint in the Xcode file's gutter, it shows up as a dotted line outline of the normal breakpoint:

I can't enable the breakpoint; it's either disabled or dotted.

What is the meaning of a dashed line Xcode breakpoint? Why can't I enable it?

Answer 1

If you hover over such a disabled breakpoint, it will display:

Xcode won't pause at this breakpoint because it has not been resolved. Resolving it requires that:

• The line at the breakpoint is compiled.
• The compiler generates debug information that is not stripped out (check the Build Settings).
• The library for the breakpoint is loaded.