Fix compilation with -Werror=unused-result #3676
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JohanMabille
approved these changes
Dec 9, 2024
|
Thanks for this fix! Running |
Compile-tested only.
~ $ /usr/local/bin/c++ -DFMT_SHARED -DSPDLOG_FMT_EXTERNAL -I/home/build/libmamba/include -isystem /usr/share -fPIC -O3 -DNDEBUG -std=gnu++17 -Wall -Wextra -Wshado
w -Wnon-virtual-dtor -Wold-style-cast -Wcast-align -Wunused -Woverloaded-virtual -Wpedantic -Wconversion -Wsign-conversion -Wnull-dereference -Wdouble-promotion -
Wformat=2 -Wunreachable-code -Wuninitialized -Werror -Wmisleading-indentation -Wduplicated-cond -Wduplicated-branches -Wlogical-op -Wuseless-cast -MD -MT micromam
ba/CMakeFiles/micromamba.dir/src/constructor.cpp.o -MF micromamba/CMakeFiles/micromamba.dir/src/constructor.cpp.o.d -o micromamba/CMakeFiles/micromamba.dir/src/co
nstructor.cpp.o -c /home/build/micromamba/src/constructor.cpp
/home/build/micromamba/src/constructor.cpp: In function 'void read_binary_from_stdin_and_write_to_file(mamba::fs::u8path&)':
/home/build/micromamba/src/constructor.cpp:200:17: error: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Werror=unused-result]
200 | std::freopen(nullptr, "rb", stdin);
| ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: dann frazier <[email protected]>
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Compile-tested only.
~ $ /usr/local/bin/c++ -DFMT_SHARED -DSPDLOG_FMT_EXTERNAL -I/home/build/libmamba/include -isystem /usr/share -fPIC -O3 -DNDEBUG -std=gnu++17 -Wall -Wextra -Wshado w -Wnon-virtual-dtor -Wold-style-cast -Wcast-align -Wunused -Woverloaded-virtual -Wpedantic -Wconversion -Wsign-conversion -Wnull-dereference -Wdouble-promotion - Wformat=2 -Wunreachable-code -Wuninitialized -Werror -Wmisleading-indentation -Wduplicated-cond -Wduplicated-branches -Wlogical-op -Wuseless-cast -MD -MT micromam ba/CMakeFiles/micromamba.dir/src/constructor.cpp.o -MF micromamba/CMakeFiles/micromamba.dir/src/constructor.cpp.o.d -o micromamba/CMakeFiles/micromamba.dir/src/co nstructor.cpp.o -c /home/build/micromamba/src/constructor.cpp /home/build/micromamba/src/constructor.cpp: In function 'void read_binary_from_stdin_and_write_to_file(mamba::fs::u8path&)': /home/build/micromamba/src/constructor.cpp:200:17: error: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Werror=unused-result]
200 | std::freopen(nullptr, "rb", stdin);
| ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~