Making libmemcached-1.0.18, ISO C++ forbids comparison between pointer and integer [-fpermissive]

[Jackson Dagger]

I get the following error when attempting to build. It happens whether I do --enable-memaslap or not. Is there any other way to get memaslap?

clients/memflush.cc: In function ‘int main(int, char**)’:
clients/memflush.cc:42:22: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   42 | if (opt_servers == false)
      | ^~~~~
clients/memflush.cc:51:24: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   51 | if (opt_servers == false)
      | ^~~~~
make[1]: *** [Makefile:5832: clients/memflush.o] Error 1
make[1]: Leaving directory '/home/jackson/Documents/Systopia/libmemcached-1.0.18'
make: *** [Makefile:9973: install] Error 2

[hgy (hpgysin)]

you have to replace false by NULL to fix the syntax to avoid those errors with newer compilers.

use a patch file like this:

# avoid comparison of pointer with integer
# error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
#
--- clients/memflush.cc.orig 2014-02-09 12:52:42.000000000 +0100
+++ clients/memflush.cc 2022-06-03 10:06:40.989938212 +0200
@@ -39,7 +39,7 @@
 {
   options_parse(argc, argv);

- if (opt_servers == false)
+ if (opt_servers == NULL)
   {
     char *temp;

@@ -48,7 +48,7 @@
       opt_servers= strdup(temp);
     }

- if (opt_servers == false)
+ if (opt_servers == NULL)
     {
       std::cerr << "No Servers provided" << std::endl;
       exit(EXIT_FAILURE);