Re: ABI change in ImageMagick

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Le 16/11/2024 à 22:46, Peter Pentchev a écrit :

Hm, ICBW, but, at least to me, this enum change looks like an actual
breaking ABI (not API) change. If a program was compiled to call that
function with the SentinelFilter value, the program code would pass
32 as a parameter and invoke the function. If loaded with the new
version of the library, this would cause the function to assume that
the caller wanted to pass MagicKernelSharp2013Filter and... do something
unexpected.

No, SentinelFilter is a special value keeping track of first free value
A program will never use this in an arg call (OK name is confusing)

Typical usage

	if (filter < SentinelFilter) {
		SetResampleFilter(RF, filter);
	} else {
		printf("Bad filter value\n");
		exit(1);
	}

Notice: the bad map change have been reverted,
so 7.1.1-41 is OK with same ABI than 7.1.1-39

Remi


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