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| author | Mark Simulacrum <mark.simulacrum@gmail.com> | 2017-05-13 20:55:11 -0600 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-05-13 20:55:11 -0600 |
| commit | e71d4404bd6ad9e282d8efbb20eb8d8c2d13a9a8 (patch) | |
| tree | 481940c9b748603a9390700349140200ce2a55d4 /src/libsyntax/parse | |
| parent | cfea5222268680114949777457237aae394bbfe7 (diff) | |
| parent | 7b535e1096b8a1f0d076d4b6f6aac623adb7d23f (diff) | |
| download | rust-e71d4404bd6ad9e282d8efbb20eb8d8c2d13a9a8.tar.gz rust-e71d4404bd6ad9e282d8efbb20eb8d8c2d13a9a8.zip | |
Rollup merge of #41946 - qnighy:disallow-dot-underscore-in-float, r=petrochenkov
Disallow ._ in float literal. This patch makes lexer stop parsing number literals before `._`, as well as before `.a`. Underscore itself is still allowed like in `4_000_000.000_000_`. Fixes a half part of #41723. The other is `""_`.
Diffstat (limited to 'src/libsyntax/parse')
| -rw-r--r-- | src/libsyntax/parse/lexer/mod.rs | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/src/libsyntax/parse/lexer/mod.rs b/src/libsyntax/parse/lexer/mod.rs index ded1f0b599a..a83b19c7334 100644 --- a/src/libsyntax/parse/lexer/mod.rs +++ b/src/libsyntax/parse/lexer/mod.rs @@ -754,9 +754,7 @@ impl<'a> StringReader<'a> { // integer literal followed by field/method access or a range pattern // (`0..2` and `12.foo()`) if self.ch_is('.') && !self.nextch_is('.') && - !self.nextch() - .unwrap_or('\0') - .is_xid_start() { + !ident_start(self.nextch()) { // might have stuff after the ., and if it does, it needs to start // with a number self.bump(); |