/* A CF_DATA_SAVE-style output macro, mirroring curl's
* lib/cfilters.h CF_DATA_SAVE(save, cf, data). The macro body *assigns* its
* first parameter ((save) = ...), so that parameter is a macro OUTPUT argument:
* a bare identifier passed there is written by the macro, not read. Only the
* macro-expansion engine (ProjectContext.function_macros +
* macro_output_param_indices) lets EXP33-C see that, so reads of the variable
* are not "used uninitialized" false positives (task 185, Phase 2c-ii). */