Compilation fails with error: no match for ‘operator==’

[aravindprasad]

The system is Ubuntu 20.04; GCC version: 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)

Here is a more detailed error. Happy to provide any more details.

g++ -o ../../bin/proflex main.cpp -lm -g -Wall -Wundef -Wshadow
In file included from main.cpp:52:
makechem.cpp: In member function ‘void list::add_record(int)’:
makechem.cpp:327:9: error: no match for ‘operator==’ (operand types are ‘std::ifstream’ {aka ‘std::basic_ifstream’} and ‘long int’)
327 | if( fp == NULL)
| ^
makechem.cpp:327:9: note: candidate: ‘operator==(int, long int)’
makechem.cpp:327:9: note: no known conversion for argument 1 from ‘std::ifstream’ {aka ‘std::basic_ifstream’} to ‘int’
In file included from /usr/include/c++/9/bits/stl_algobase.h:64,
from /usr/include/c++/9/vector:60,
from main.cpp:47:

[tanmoy7989]

@aravindprasad: Did this get solved? I tried to install and just faced the same error.

[rasbt]

Maybe this related PR helps? #2