Wireshark mailing list archives
Re: Removing string constants from assertions
From: Evan Huus <eapache () gmail com>
Date: Tue, 4 Sep 2012 17:33:30 -0400
On Tue, Sep 4, 2012 at 4:53 PM, Guy Harris <guy () alum mit edu> wrote:
On Sep 4, 2012, at 1:39 PM, Evan Huus wrote:I've noticed in several places the pattern of adding a message to assertions in the form of a string constant: g_assert(condition && "explanation"); This seems dangerous to me, primarily because if anyone ever mistypes the && as a || then the assertion becomes dead code - it will always pass.Yes, that's risky.Also (though less important): - it doesn't really add any benefit over simply putting the message in a comment - a developer will have to open up the code anyways to figure out what the problem isI'm not *entirely* sure that's the case; the message printed with the version of GLib on my machine (2.32.3) includes the entire assertion string: ERROR:sourcefile.c:{lineno}:{func}: assertion failed: ({test condition} && "{string}") It Might Be Nice if there were a version of g_assert() that took two arguments - a condition and a description string - and printed ERROR:sourcefile.c:{lineno}:{func}: assertion failed: {test condition} : {description}) or something such as that, but there isn't. We might be able to hack up a macro of that sort (with a helper routine, just as the existing g_assert macros have g_assertion_message_ helper routines).
I mis-thought on that one. I meant to say that the developer will have to open up the code anyways to *fix* the problem (and non-developers probably don't care about the gory details behind an assertion failure). I agree that a macro would be nice, but I'm not sure how much of an ugly hack it would end up being. I'm not too familiar with the bowels of C macros though, so it could be easy. I will convert the string constants to comments for now, and if someone wants to write such a macro then they're free to grep through for "g_assert" calls and fix them up. ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <wireshark-dev () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-request () wireshark org?subject=unsubscribe
Current thread:
- Removing string constants from assertions Evan Huus (Sep 04)
- Re: Removing string constants from assertions Guy Harris (Sep 04)
- Re: Removing string constants from assertions Evan Huus (Sep 04)
- Re: Removing string constants from assertions Guy Harris (Sep 04)