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() {
    alt 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() {`
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			`alt 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
extend tester so that error msgs can be attached to lines 2012-01-03 23:01:48 -06:00			`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;`
			`}`