Nikita Youshchenko <[EMAIL PROTECTED]> writes:
> Hello.
>
> To fix #486693, I need to apply a patch that changes #define'd macro in an
> exported library header.
>
> The pattern is:
>
> extern int foo(char *param1, int param2);
> #define bar(param) foo(param, expr(param))
>
> and changed thing is expr(param)
>
> Looks like binary interface of the shared library does not change, however
> strictly saying any user of the library that uses bar() macro needs to
> recompile his code.
>
> Any comments on how to handle this change in packaging properly?
>
> Nikita
Are you saying that old binaries will no longer work because param2
will be wrong? If so then the ABI changed.
You might want to use
extern int foo(char *param1, int param2);
extern int foo_new(char *param1, int param2_new);
#define bar(param) foo(param, expr(param))
or versioned symbols to keep the old and new binaries working. In that
case the ABI doesn't break so only shlibs/symbols file need to be
bumped.
If the expr had a bug and old binaries didn't work with the old
library then I would say that requires and shlibs bump, possibly a
versioned conflicts against all rdepends and binNMUs.
MfG
Goswin
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