356: Fix a bug in char literal validation discovered through fuzzing r=matklad a=DJMcNab

We also add a Cargo.lock to the fuzzing directory, as that isn't gitignored automatically, so I imagine it should be committed.

Co-authored-by: DJMcNab <36049421+djmcnab@users.noreply.github.com>
This commit is contained in:
bors[bot] 2018-12-29 12:50:34 +00:00
commit 4a3d6aa26a
4 changed files with 533 additions and 2 deletions

530
crates/ra_syntax/fuzz/Cargo.lock generated Normal file
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View File

@ -82,7 +82,7 @@ impl<'a> Parser<'a> {
fn parse_escape(&mut self, start: TextUnit) -> StringComponent {
if self.peek().is_none() {
return StringComponent::new(TextRange::from_to(start, start), AsciiEscape);
return StringComponent::new(TextRange::from_to(start, self.get_pos()), AsciiEscape);
}
let next = self.advance();

View File

@ -70,7 +70,7 @@ pub(super) fn validate_char_component(
fn validate_ascii_escape(text: &str, range: TextRange, errors: &mut Vec<SyntaxError>) {
if text.len() == 1 {
// Escape sequence consists only of leading `\`
// Escape sequence consists only of leading `\` (only occurs at EOF, otherwise e.g. '\' is treated as an unclosed char containing a single quote `'`)
errors.push(SyntaxError::new(EmptyAsciiEscape, range));
} else {
let escape_code = text.chars().skip(1).next().unwrap();

View File

@ -0,0 +1 @@
!('\