The -Wextra flag in gcc turns on additional warning flags that are not enabled by -Wall.
https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html
gcc -Wextra
0001-01-01
The -Wextra flag in gcc turns on additional warning flags that are not enabled by -Wall.
https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html
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