Now the lexer just produces a token and the parser is the one responsible for
activating it.
This fixes problem like the one pr11797 where the lexer and the parser were not
in sync. This also let us be more strict on where in the file we accept
these pragmas.
llvm-svn: 149014
Pass a typo correction callback object from ParseCastExpr to
Sema::ActOnIdExpression to be a bit more selective about what kinds of
corrections will be allowed for unknown identifiers.
llvm-svn: 148973
is a declaration-stmt or an expression, we can discern a subset of cases where
the user erred in omitting the typename keyword before a dependent type name.
Fixes PR11358!
llvm-svn: 148896
This is the last piece of N3031 (decltype in weird places) - supporting
the use of decltype in a class ctor's member-initializer-list to
specify the base classes to initialize.
Reviewed by Richard Smith.
llvm-svn: 148789
function body. This keeps the brace count accurate to prevent
additional errors. Also, moved the caret from the brace to the function
name.
Code:
class F{ int Foo{ return 1; } };
Fixed error:
parameters.cc:1:14: error: function definition does not declare parameters
class F{ int Foo{ return 1; } };
^
1 error generated.
Old errors:
parameters.cc:1:17: error: function definition does not declare parameters
class F{ int Foo{ return 1; } };
^
parameters.cc:1:30: error: expected ';' after class
class F{ int Foo{ return 1; } };
^
;
parameters.cc:1:31: error: expected external declaration
class F{ int Foo{ return 1; } };
^
3 errors generated.
llvm-svn: 148621
Old error:
plusequaldeclare1.cc:3:8: error: expected ';' at end of declaration
int x += 6;
^
;
New error:
plusequaldeclare1.cc:3:9: error: invalid '+=' at end of declaration; did you
mean '='?
int x += 6;
^~
=
llvm-svn: 148433
- If the declarator is at the start of a line, and the previous line contained
another declarator and ended with a comma, then that comma was probably a
typo for a semicolon:
int n = 0, m = 1, l = 2, // k = 5;
myImportantFunctionCall(); // oops!
- If removing the parentheses would correctly initialize the object, then
produce a note suggesting that fix.
- Otherwise, if there is a simple initializer we can suggest which performs
value-initialization, then provide a note suggesting a correction to that
initializer.
Sema::Declarator now tracks the location of the comma prior to the declarator in
the declaration, if there is one, to facilitate providing the note. The code to
determine an appropriate initializer from the -Wuninitialized warning has been
factored out to allow use in both that and -Wvexing-parse.
llvm-svn: 148072
- reject definitions of enums within friend declarations
- require 'enum', not 'enum class', for non-declaring references to scoped
enumerations
llvm-svn: 147824
the Semantic Powers to only warn on class types (or dependent types), where the
constructor or destructor could do something interesting.
llvm-svn: 147642
scope, when no other indication is provided that the user intended to declare a
function rather than a variable.
Remove some false positives from the existing 'parentheses disambiguated as a
function' warning by suppressing it when the declaration is marked as 'typedef'
or 'extern'.
Add a new warning group -Wvexing-parse containing both of these warnings.
The new warning is enabled by default; despite a number of false positives (and
one bug) in clang's test-suite, I have only found genuine bugs with it when
running it over a significant quantity of real C++ code.
llvm-svn: 147599
modules. This leaves us without an explicit syntax for importing
modules in C/C++, because such a syntax needs to be discussed
first. In Objective-C/Objective-C++, the @import syntax is used to
import modules.
Note that, under -fmodules, C/C++ programs can import modules via the
#include mechanism when a module map is in place for that header. This
allows us to work with modules in C/C++ without committing to a syntax.
llvm-svn: 147467
Split out a new ExpressionEvaluationContext flag for this case, and don't treat
it as unevaluated in C++11. This fixes some crash-on-invalids where we would
allow references to class members in potentially-evaluated constant expressions
in static member functions, and also fixes half of PR10177.
The fix to PR10177 exposed a case where template instantiation failed to provide
a source location for a diagnostic, so TreeTransform has been tweaked to supply
source locations when transforming a type. The source location is still not very
good, but MarkDeclarationsReferencedInType would need to operate on a TypeLoc to
improve it further.
Also fix MarkDeclarationReferenced in C++98 mode to trigger instantiation for
static data members of class templates which are used in constant expressions.
This fixes a link-time problem, but we still incorrectly treat the member as
non-constant. The rest of the fix for that issue is blocked on PCH support for
early-instantiated static data members, which will be added in a subsequent
patch.
llvm-svn: 146955
Abramo Bagnara