Crash in cppcheck with 26ba29c30 and current head

[Andrew C Aitchison]

cppcheck cppcheck.26ba29c30.test.cpp
crashes with the attached c++ program.

git bisect shows that f4d18a8d1 is OK but 26ba29c30 causes the crash.

[Andrew C Aitchison]

Oops. A last minute change meant that the original attachment was invalid C++.
26ba29c30.cpp compiles with g++ and clang++ but cppcheck still crashes.

[CHR]

With head I get

foo.cpp:3:15: style: class member 'my_26ba29c30_class::i' is never used. [unusedStructMember]
    const int i = 0;
              ^

and no crash. Do you use any special flags?

[Andrew C Aitchison]

No special flags.
Turns out to be a compiler problem.

No problem if I build with gcc13,
but I get the crash with if I build cppcheck head with clang++ 13,14, 15, 16, 17 or 18
(and builds with clang++ 11 and 12 fail to find system headers, probably because of software rot on my machine).

[Oliver Stöneberg]

There was a change which triggered a Clang compiler bug which took a while to be worked around on our side - see https://trac.cppcheck.net/ticket/12108.

I am curious about the Clang 11/12 build problems though. I am able to build it but I am getting a warning we cannot disable and another warning also related to that:

warning: unknown warning option '-Wno-reserved-identifier'; did you mean '-Wno-reserved-id-macro'? [-Wunknown-warning-option]

externals/picojson/picojson.h:78:9: warning: macro name is a reserved identifier [-Wreserved-id-macro]
#define __STDC_FORMAT_MACROS
        ^

What are your issues?