./install build warning, " ‘strnlen’; did you mean ‘strlen’? "

[capsicumw]

Not sure if this is a bug or not, rexgen seems to work, at least after finding a workaround for an [unrelated?] issue with the program relying on LD_LIBRARY_PATH to find /usr/local/lib/librexgen.so*

This is the clip from the ./install output

Scanning dependencies of target rexgen
[ 96%] Building C object rexgen/CMakeFiles/rexgen.dir/rexgen.c.o
/home/git/rexgen/src/rexgen/rexgen.c: In function ‘callback’:
/home/git/rexgen/src/rexgen/rexgen.c:160:11: warning: implicit declaration of function ‘strnlen’; did you mean ‘strlen’? [-Wimplicit-function-declaration]
     len = strnlen(dst, buffer_size);
           ^~~~~~~
           strlen

[rjzak]

I'm confused by this as well. The code correctly includes string.h, which has strnlen(). Yet this warning is thrown.