Please provide va_list variants of variadic functions

[skliper]

I've recently encountered a need to conditionally call CFE_EVS_SendEvent or CFE_ES_WriteToSysLog depending on the app's status. Unfortunately, both of these functions are variadic functions, and they can't easily be wrapped in another variadic function.

The C standard library provides variants of its variadic functions that take a va_list. For example, printf has the vprintf variant.

Please provide similar variants for cFE's variadic functions. The implementation would be simple: the majority of the function's logic can reside in the va_list version, and the variadic function can become thin a wrapper around the va_list version.

[skliper]

Imported from trac issue 218. Created by tflemin1 on 2017-11-03T11:25:30, last modified: 2019-03-01T15:27:58

[skliper]

Trac comment by tflemin1 on 2017-11-15 12:06:45:

See also [cfs_osal:193 OSAL issue 193].

[skliper]

Trac comment by tflemin1 on 2018-01-04 14:02:19:

Initial priority value was erroneous.