Known Problems¶

Known Problems in Release 2.2.7¶

building the examples fails on MacOS due to recent build fixes for Windows =:|

The repo has a patch to fix that.

pvGet fails if the array size declared in SNL is greater than the native array size of the PV, whereas monitoring with that setup works.
The examples/demo doesn’t work with base >+ 3.15 due to a missing entry in the dbd file.

While building against base 7.x succeeds there are lots of deprecation warnings and most of the tests are not run due to an incomplete definition of the EPICS_HAS_UNIT_TEST make variable.

Building fails with Visual Studio 2010 due to a C99-ism (mixed declarations and code) that was introduced when upgrading the lemon parser template.
Parallel building can fail when using gcc to generate dependency information. The solution is to use the EPICS tool mkmf.pl instead by placing a line

HDEPENDS_METHOD = MKMF

in the config section of src/snc/Makefile.
On Windows, make clean fails inside the documentation directory. The fix is to replace rm -rf with $(RMDIR) in documentation/Makefile.

Certain versions of Windows don’t like relative paths with forward slashes for commands whose result gets redirected to a file. This leads to errors when building against base-3.15 which has deprecated the PATH_FILTER function (which converts forward to backward slashes). The solution is to define LEMON=$(abspath $(INSTALL_HOST_BIN)/lemon$(HOSTEXE)) in src/snc/Makefile.

Attempting to issue a DEFAULT pvPut when an ASYNC put is already pending on the same variable leads to an assertion failure.

In test/validate, pvAssignStress.st has the same program name as pvAssignSubst.st, leading to build errors when cross-compiling to VxWorks or RTEMS, where all tests get linked into a single library. This can be fixed by changing the program name in pvAssignStress.st to “pvAssignStressTest”.
A previous bugfix in the pvAssign builtin introduced a regression, that can lead to assertion failures.
A wrong assertion in the CA event handler may be triggered when connection to a PV is lost in the middle of a pending get request.
When exiting from a program, deadlock is possible when a pending callback is active when the program shuts down.
Tests fail in tests/compiler if the build host has an ancient version of Test::More that does not support subtest. This happens e.g. on RHEL 6.6.
Dependency generation in src/snc is broken if compiled against base-3.15 due to a bug in the Makefile (and one in base).
Building static libraries fails due to wrong order of dependent libraries in two Makefiles.
Building on Windows can fail due to missing epicsShare stuff in seq_snc.h.