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Commit Graph

Author	SHA1	Message	Date
David Majnemer	9adc361008	Sema: Do not allow lambda expressions to appear inside of constant expressions We would previously not diagnose this which would lead to crashes (on very strange code). This fixes PR17675. llvm-svn: 193397	2013-10-25 09:12:52 +00:00
Richard Smith	3440ecaae3	Update test FIXME: The '[]' in 'delete []' is never part of a lambda. llvm-svn: 166090	2012-10-17 06:45:09 +00:00
Richard Smith	7bdcc4a9da	Disambiguation of '[[': * In C++11, '[[' is ill-formed unless it starts an attribute-specifier. Reject array sizes and array indexes which begin with a lambda-expression. Recover by parsing the lambda as a lambda. * In Objective-C++11, either '[' could be the start of a message-send. Fully disambiguate this case: it turns out that the grammars of message-sends, lambdas and attributes do not actually overlap. Accept any occurrence of '[[' where either '[' starts a message send, but reject a lambda in an array index just like in C++11 mode. Implement a couple of changes to the attribute wording which occurred after our attributes implementation landed: * In a function-declaration, the attributes go after the exception specification, not after the right paren. * A reference type can have attributes applied. * An 'identifier' in an attribute can also be a keyword. Support for alternative tokens (iso646 keywords) in attributes to follow. And some bug fixes: * Parse attributes after declarator-ids, even if they are not simple identifiers. * Do not accept attributes after a parenthesized declarator. * Accept attributes after an array size in a new-type-id. * Partially disamiguate 'delete' followed by a lambda. More work is required here for the case where the lambda-introducer is '[]'. llvm-svn: 154369	2012-04-10 01:32:12 +00:00

Author

SHA1

Message

Date

David Majnemer

9adc361008

Sema: Do not allow lambda expressions to appear inside of constant expressions

We would previously not diagnose this which would lead to crashes (on
very strange code).

This fixes PR17675.

llvm-svn: 193397

2013-10-25 09:12:52 +00:00

Richard Smith

3440ecaae3

Update test FIXME: The '[]' in 'delete []' is never part of a lambda.

llvm-svn: 166090

2012-10-17 06:45:09 +00:00

Richard Smith

7bdcc4a9da

Disambiguation of '[[':

* In C++11, '[[' is ill-formed unless it starts an attribute-specifier. Reject
   array sizes and array indexes which begin with a lambda-expression. Recover by
   parsing the lambda as a lambda.
 * In Objective-C++11, either '[' could be the start of a message-send.
   Fully disambiguate this case: it turns out that the grammars of message-sends,
   lambdas and attributes do not actually overlap. Accept any occurrence of '[['
   where either '[' starts a message send, but reject a lambda in an array index
   just like in C++11 mode.

Implement a couple of changes to the attribute wording which occurred after our
attributes implementation landed:
 * In a function-declaration, the attributes go after the exception specification,
   not after the right paren.
 * A reference type can have attributes applied.
 * An 'identifier' in an attribute can also be a keyword. Support for alternative
   tokens (iso646 keywords) in attributes to follow.

And some bug fixes:
 * Parse attributes after declarator-ids, even if they are not simple identifiers.
 * Do not accept attributes after a parenthesized declarator.
 * Accept attributes after an array size in a new-type-id.
 * Partially disamiguate 'delete' followed by a lambda. More work is required
   here for the case where the lambda-introducer is '[]'.

llvm-svn: 154369

2012-04-10 01:32:12 +00:00

3 Commits