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C++: Fix crash with invalid raw string literal

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While parsing a document Bind::asStringLiteral() Token::spell() was
called for a raw string literal token with a Token::literal nullptr.

This is due scanRawStringLiteral() not properly aborting for
invalid/incomplete code and that the code paths handling
multi-line-raw-strings were not limited to the highlighting case.

Address both cases.

Task-number: QTCREATORBUG-18941
Change-Id: I489d288ccbd7b59be396dada846613ff555436cf
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
This commit is contained in:
Nikolai Kosjar
2017-09-19 14:36:21 +02:00
parent 0bf27af0a7
commit 76006a1353
3 changed files with 31 additions and 6 deletions
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16
src/libs/3rdparty/cplusplus/Lexer.cpp vendored
View File

@@ -211,7 +211,7 @@ void Lexer::scan_helper(Token *tok)
_state = 0;
scanCppComment(originalKind);
return;
} else if (isRawStringLiteral(s._tokenKind)) {
} else if (!control() && isRawStringLiteral(s._tokenKind)) {
tok->f.kind = s._tokenKind;
if (scanUntilRawStringLiteralEndSimple())
_state = 0;
@@ -755,13 +755,17 @@ void Lexer::scanRawStringLiteral(Token *tok, unsigned char hint)
yyinp();
} else if (_yychar == ')') {
yyinp();
if (delimLength == -1)
break;
if (delimLength == -1) {
tok->f.kind = T_ERROR;
return;
}
closingDelimCandidate = _currentChar;
} else {
if (delimLength == -1) {
if (_yychar == '\\' || std::isspace(_yychar))
break;
if (_yychar == '\\' || std::isspace(_yychar)) {
tok->f.kind = T_ERROR;
return;
}
yyinp();
} else {
if (!closingDelimCandidate) {
@@ -804,7 +808,7 @@ void Lexer::scanRawStringLiteral(Token *tok, unsigned char hint)
else
tok->f.kind = T_RAW_STRING_LITERAL;
if (!closed)
if (!control() && !closed)
s._tokenKind = tok->f.kind;
}