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std::ostream& dbg = std::cout;
#ifndef LOCAL
std::ofstream os;
os.open("/dev/null", std::ios_base::out);
dbg = os;
#endif
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std::ostream& dbg = std::cout;
#ifndef LOCAL
std::ofstream os;
os.open("/dev/null", std::ios_base::out);
dbg = os;
#endif
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A.cpp:10:21: error: variable ‘std::ofstream os’ has initializer but incomplete type
10 | std::ofstream os("/dev/null", std::ios_base::out);
| ^
A.cpp:11:5: error: ‘dbg’ does not name a type
11 | dbg = os;
| ^~~