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Diffstat (limited to 'compiler/rustc_error_codes/src/error_codes/E0580.md')
-rw-r--r-- | compiler/rustc_error_codes/src/error_codes/E0580.md | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0580.md b/compiler/rustc_error_codes/src/error_codes/E0580.md new file mode 100644 index 000000000..260575d5d --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0580.md @@ -0,0 +1,21 @@ +The `main` function was incorrectly declared. + +Erroneous code example: + +```compile_fail,E0580 +fn main(x: i32) { // error: main function has wrong type + println!("{}", x); +} +``` + +The `main` function prototype should never take arguments. +Example: + +``` +fn main() { + // your code +} +``` + +If you want to get command-line arguments, use `std::env::args`. To exit with a +specified exit code, use `std::process::exit`. |