tests: fix tests in travis-ci.org

To get consistent output between Linux & OS X.

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

If we want to override `strerror()` in libjson-c
to make tests consistent across platforms, we
need to do it build-wide as configure/build
option.

Apple linkers make it really hard to override functions
at link-time, and this seems to be locked down on travis-ci.org
[ for security reasons I assume ].
While I got it to work locally, it did not work
when running on travis.

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

On Apple this seems to fail the `test_locale` test,
which would imply that the `uselocale` function
does not behave as expected.

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

Which now seems to fail the build.

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

ugh... seems cppcheck is not packaged for OS X
And `set -e` exposes this.

And also `cppcheck` seems to exit with non-zero
exit codes by default [even if errs found].

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

More code compression/de-duplication.

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

Seems that test1 is failing, but travis is not catching it.
Likely, this is because the `cppcheck` returns success
and we need to bail on the `make check` step.

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

README.md: show build status tag from travis-ci.org

Looks nice to see a `Build Passing` tag when you
scroll to the README.

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

Add a test that triggers the problem to ensure it stays fixed.

Fix CMake Build process improved for MinGW and MSYS2

Windows: Fix dynamic library build with Visual Studio

build,cmake: build,cmake: rename libjson-c-static.a to libjson-c.a

tests: symlink basic tests to a single file that has the common code

Replace obsolete AM_PROG_LIBTOOL

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

Apply the same property as to json-c.

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

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

build,cmake: fix vasprintf implicit definition and generate both static & shared libs

Fix stack buffer overflow in json_object_double_to_json_string_format()

Issue originally found in the json-c 0.11 internal copy in GDAL but also found
in latest git version.

If doing things like
json_object* obj = json_object_new_double(1e300);
json_object_set_serializer(obj, json_object_double_to_json_string, "%f", NULL);
json_object_to_json_string(obj)

    size = snprintf(buf, sizeof(buf),
        format ? format :
          (modf(jso->o.c_double, &dummy) == 0) ? "%.17g.0" : "%.17g",
          jso->o.c_double);
will return a value greater than 128 since at least 300 characters are needed.
This value is then passed to printbuf_memappend(pb, buf, size); that tries to
read size bytes in buf.

So we should clamp size to sizeof(buf). And on Windows, _snprintf() returns -1
in that situation, so deal also with this case.

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1682
Credit to OSS-Fuzz

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

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

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

Added #ifdef conditions for MinGW because this compiler doesn't define
gcc atomic builtins, so __sync_val_compare_and_swap was not found
neither any of any __GCC_HAVE_SYNC_COMPARE_AND_SWAP_* definition

This fix includes some fixes for config.h.win32 that was generating
some compiling errors on MinGW64 and also fix CMakeLists.txt in order to
give better support to MinGW and MSYS2

Fix error C3688 when compiling on Visual Studio 2015

Add FALLTHRU comment to handle GCC7 warnings.

Fix compilation without C-99 option

fix doc in tokener header file