fix cmake version for tests

Fix use-after-free in json_tokener_new_ex()

The failure path taken in the event of printbuf_new() returning NULL
calls free() on tok->stack after already having freed tok. Swap the
order of the two calls to fix an obvious memory access violation.

Fixes: bcb6d7d347 ("Handle allocation failure in json_tokener_new_ex")
Signed-off-by: Juuso Alasuutari <juuso.alasuutari@gmail.com>

CMake create uninstall target if unix generator is used

I moved this before when I was using ssize_t in linkhash.c, but I moved
`struct lh_string` to `struct json_key` in a different file, so this isn't needed anymore

`struct lh_string` really needs to be renamed and moved to json_object.h

Add AfterCaseLabel to .clang-format

This is to fix the behavior that might've changed between older versions of clang-format, I'm not sure.
Version 10 tries to put the bracket on the same line as case without this.

Check __STDC_VERSION__ is defined before checking its value

Prevent an undef warning regarding __STDC_VERSION__ by checking whether it is defined before checking its value.

To avoid target exe file export JSON functions.

[RFC] json_pointer: allow the feature to be disabled

Some users may not want to included it in their build/system. So allow a
cmake symbol to disable it.

A user can do 'cmake -DDISABLE_JSON_POINTER=ON <json_c_root_dir>' and
disable the json_pointer functionality. That saves about 17 KB (on an
x86_64) machine. This may be useful on smaller embedded systems; even
though the saving would be fewer kilobytes.

One thing that also needs to change a bit, is that the 'json.h' be
autogenerated via cmake, in order to conditionally include that
"json_pointer.h" file.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

The intent is to be able to disable some features that get built into the
library. When we do that, we also need to disable some tests.

It's easier when adjusting a variable that contains the list of test names,
versus modifying the list in the foreach() statement.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

Fix unused variable for Win32 build in random_seed.c

fix invalid unsigned arithmetic.

random_seed: on error, continue to next method

fix compilation with clang

Fixes the following warning:

json_pointer.c:230:7: warning: implicit declaration of function
    'vasprintf' is invalid in C99 [-Wimplicit-function-declaration]
            rc = vasprintf(&path_copy, path_fmt, args);

instead of exiting the process

Fixed test1 regression.

SIZEOF_SIZE_T might be only defined in config.h.

Include config.h for these systems to pass tests which are only
supposed to be run on 32 bit systems.

Fixes issue #666.

Handle more allocation failures in json_tokener* functions

Validate size arguments in arraylist functions.