Compile fails on Particle with cJON.h errors

[rcomeau]

Here is the error messages:

In file included from subscribe2.cpp:1:0:
cJSON.h:58:24: error: expected ';' at end of member declaration
void _(_malloc_fn)(size_t sz);
^

cJSON.h:58:33: error: expected ')' before 'sz'
void _(_malloc_fn)(size_t sz);
^

[DaveGamble]

At HEAD, line 58 reads: void _(_malloc_fn)(size_t sz);
What do you have?

[FSMaxB]

That looks like this code is not from cJSON but has been added by somebody else later.

[jchenbr]

It is very likely that you are using old version cJSON in c++, where size_t is not supported as default type by some c++ compiler. So the compiler may interpret it as a declaration of some member function.
A quick solution is including 'string.h' in the cJSON.h.