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

Also, there's no need to worry about output consistency here, since it'll be
 different anyway due to different pointer values.

Improve json_object -> string performance

Hawciz pointed out that the previous commit modifies the public
interface of printbuf. Per his suggestion, sprintbuf() was restored
and a new pair of macros was added that wraps printbuf_memappend().

Using a wrapper macro instead of modifying sprintbuf() also reduces
function call overhead, bringing total performance gains to
approximately 400%.

Removes variadic prints for ~3x performance improvement.