rust/src/test/compile-fail/alt-join.rs

// a good test that we merge paths correctly in the presence of a
// variable that's used before it's declared

fn my_fail() -> ! { fail; }

fn main() {
    match true { false => { my_fail(); } true => { } }

    log(debug, x); //~ ERROR unresolved name: x
    let x: int;
}
Initialize all constraints to False Previously, typestate was initializing the init constraint for a declared-but-not-initialized variable (like x in "let x;") to False, but other constraints to Don't-know. This led to over-lenient results when a variable was used before declaration (see the included test case). Now, everything gets initialized to False in the prestate/poststate- finding phase, and Don't-know should only be used in pre/postconditions. This aspect of the algorithm really needs formalization (just on paper), but for now, this closes #700 2011-08-05 17:23:44 -05:00			`// a good test that we merge paths correctly in the presence of a`
			`// variable that's used before it's declared`

			`fn my_fail() -> ! { fail; }`

			`fn main() {`
Convert alt to match. Stop parsing alt 2012-08-06 14:34:08 -05:00			`match true { false => { my_fail(); } true => { } }`
Initialize all constraints to False Previously, typestate was initializing the init constraint for a declared-but-not-initialized variable (like x in "let x;") to False, but other constraints to Don't-know. This led to over-lenient results when a variable was used before declaration (see the included test case). Now, everything gets initialized to False in the prestate/poststate- finding phase, and Don't-know should only be used in pre/postconditions. This aspect of the algorithm really needs formalization (just on paper), but for now, this closes #700 2011-08-05 17:23:44 -05:00
change the test suite `//! kind` syntax to `//~ kind` in order to avoid a conflict with the new single-line-sugared-inner-doc-comment (`//! ...`). 2012-06-30 06:23:59 -05:00			`log(debug, x); //~ ERROR unresolved name: x`
Reformat This changes the indexing syntax from .() to [], the vector syntax from ~[] to [] and the extension syntax from #fmt() to #fmt[] 2011-08-19 17:16:48 -05:00			`let x: int;`
			`}`