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Don't return negative numbers from the flex tokenizer

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Fixes #1374.
Closes #2129.
This commit is contained in:
Eelco Dolstra 2018-05-11 12:02:19 +02:00
parent f3c85f9eb3
commit 1ad19232c4
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GPG key ID: 8170B4726D7198DE
2 changed files with 6 additions and 1 deletions
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6
src/libexpr/lexer.l
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@ -209,7 +209,11 @@ or { return OR_KW; }
\#[^\r\n]* /* single-line comments */ \#[^\r\n]* /* single-line comments */
\/\*([^*]|\*+[^*/])*\*+\/ /* long comments */ \/\*([^*]|\*+[^*/])*\*+\/ /* long comments */
{ANY} return yytext[0]; {ANY} {
/* Don't return a negative number, as this will cause
Bison to stop parsing without an error. */
return (unsigned char) yytext[0];
}
} }

1
tests/lang/parse-fail-uft8.nix Normal file
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@ -0,0 +1 @@
123 é 4