MLIB_IS_EMPTY fails on function macro accepting args

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    • Type: Improvement
    • Resolution: Fixed
    • Priority: Unknown
    • 2.2.0
    • Affects Version/s: None
    • Component/s: None
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    • Not Needed
    • 🔵 Done
    • C Drivers
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      1. What would you like to communicate to the user about this feature?
      2. Would you like the user to see examples of the syntax and/or executable code and its output?
      3. Which versions of the driver/connector does this apply to?

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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?
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      Example:

      #define macro_without_args() 123
#define macro_with_args(a, b) a + b

int x;
x = MLIB_IS_EMPTY(nonmacro);           // OK.
x = MLIB_IS_EMPTY(macro_without_args); // OK.
x = MLIB_IS_EMPTY(macro_with_args);    // error: too few arguments provided to function-like macro invocation.

      This may risk breaking builds for users if existing macros are defined. Discovered when working on CDRIVER-4489 when trying to invoke:

      mlib_duration(1, min)

      min was defined as a macro accepting two arguments

            Assignee:
            Kevin Albertson
            Reporter:
            Kevin Albertson
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              Created:
              Updated:
              Resolved: