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On 10/10/2012 06:15 PM, Jonathan Wakely wrote: >> My understanding from the documentation of the debug feature of the >> library is that this shouldn't be able to happen: mixed _GLIBCXX_DEBUG >> settings should either work or cause a linker error. Is this true? If > > Mangled names don't include function return types, so it's entirely > possible to get crashes still, the system isn't foolproof. > > To know if you've found a real problem or not we'd need a testcase. Ah, okay. The documentation made it sound to me like "our design *will* either work or cause a linker error" rather than "we make a good attempt, but there are some things that slip through the cracks". We use STL containers as class members a lot, so if that can get by the "checking" that the linker does, that sounds like a likely cause to me. >> so, should I try to reduce the broken example to get something that's >> reportable as a bug? Or is this just one of those "don't do that" >> things? (And in the latter case, any suggestions for how to detect the >> problem? With MSVC, I'd use a '#pragma detect_mismatch' in their setup >> to prevent intermixing of the debug and release library, though I am >> unsure of what happens when you introduce libraries to the picture.) > > I already answered that part on Stackoverflow. Well, you gave an alternative way of getting a somewhat similar result as using _GLIBCXX_DEBUG. :-) (Don't take my re-asking the question here to say that I don't appreciate your answers here or there BTW, because I definitely do appreciate the time taken. I just figured if someone saw it here but not there, they might have a trick up their sleeve. I also didn't know that you were involved with GCC/stdlibc++ enough to watch this list.) Evan
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