String literal macro value not correctly parsed from compile_commands.json

[baldapps]

Consider a very simple project with a CMakeLists.txt file:
cmake_minimum_required(VERSION 2.8)
set(MY_VERSION 01.00)
set(MY_MINOR_VERSION 1)
set(MY_COMP ${MY_VERSION}-${MY_MINOR_VERSION})
cmake_policy(SET CMP0048 NEW)
project(FOO CXX)
add_executable(FOO main.cpp)
add_definitions(-DFOO_VERSION="${MY_COMP}")

In the compile_commands.json I see with three slashes:

-DFOO_VERSION=\"01.00-1\"

In Eclipse I see

int main() {
std::cout << FOO_VERSION << std::endl; <------Bad character sequence encountered:
return 0;
}

So it seems when the macro is parsed in Eclipse an extra slash is taken into account. No problem executing the simple program.

[15knots]

Bad character sequence encountered

Where does that message come from?
Is it an error message of the C++ compiler? Or is it displayed when you hover over the macro name?

[baldapps]

Compiler Is not involved, it's a message you see while you hover with the mouse on the macro name. It's a parser/indexer Eclipse message.

[15knots]

I can see that the vaule of FOO_VERSIOn comes in as \"01.00-1\".
Should be "01.00-1".
So either the json parser is buggy or the generated compile_commands.json .

[15knots]

According to json.org only a single backslash is required to escape a quotation mark.
Cmake generates three backslashes instead.

So please file a change request on the cmake site since other tools might suffer from that issue, too.