[Bug 1952074] Re: Using %z in printf is not portable

[rivers via Core-talk <core-talk at aps.anl.gov>]

I believe %z is supported in Visual Studio 2015 and later.  Have we said
that older versions are no longer supported?

I have not tested %z on vxWorks 6.9.4.1, which is what we use at the
APS, but I think Andrew would have noticed if it did not work?  What is
the minimum version of vxWorks currently supported?

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https://bugs.launchpad.net/bugs/1952074

Title:
  Using %z in printf is not portable

Status in EPICS Base:
  New

Bug description:
  Some code in EPICS uses printf with the z format modifier for size_t arguments, as in "%zu". This is not portable. VxWorks (at least up to version 6.9.0) does not understand this and prints "zu" and then shifts all the remaining arguments to the wrong format specifier!
  Older Windows versions use "%Iu" for the same purpose.

  Affected code:
  modules/libcom/src/error/errlog.c (2x)
  modules/libcom/test/epicsErrlogTest.c
  modules/libcom/test/yajl_test.c (2x)
  modules/pvAccess/pvtoolsSrc/pvlist.cpp (2x)
  modules/pvAccess/src/ioc/reftrackioc.cpp (2x)
  modules/pvAccess/src/remote/blockingUDPTransport.cpp (4x)
  modules/pvAccess/src/remote/codec.cpp (2x)
  modules/pvAccess/src/remote/transportRegistry.cpp
  modules/pvAccess/src/server/responseHandlers.cpp
  modules/pvAccess/testApp/remote/testChannelConnect.cpp
  modules/pvAccess/testApp/remote/testmonitorfifo.cpp (4x)
  modules/pvData/src/factory/FieldCreateFactory.cpp (2x)
  modules/pvData/testApp/pv/performstruct.cpp (2x)
  modules/pvData/testApp/pv/testPVData.cpp
  modules/pva2pva/pdbApp/pdbgroup.cpp
  modules/pva2pva/pdbApp/pvalink.cpp (3x)
  modules/pva2pva/pdbApp/pvalink_jlif.cpp
  modules/pva2pva/testApp/testpdb.cpp (2x)

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