Substantially improve error recovery after broken if conditions by
parsing the full if when we have a semantic error instead of using
parser recovery techniques to recover from a semantic error.
This fixes rdar://6094870 - spurious error after invalid 'if' condition
llvm-svn: 60929
"else" clause, e.g.,
if (int X = foo()) {
} else {
if (X) { // warning: X is always zero in this context
}
}
Fixes rdar://6425550 and lets me think about something other than
DeclContext.
llvm-svn: 60858
post-decrement, including support for generating all of the built-in
operator candidates for these operators.
C++ and C have different rules for the arguments to the builtin unary
'+' and '-'. Implemented both variants in Sema::ActOnUnaryOp.
In C++, pre-increment and pre-decrement return lvalues. Update
Expr::isLvalue accordingly.
llvm-svn: 59638
and let the clients push whatever they want into the DiagnosticInfo
instead of hard coding a few forms. Also switch various clients to
use Diag(Tok, ...) instead of Diag(Tok.getLocation(), ...) as the
canonical form to simplify the code a bit.
llvm-svn: 59509
1. In the top level of ParseStatementOrDeclaration, don't eat a } if we
just parsed a statement if it list there. Also, don't even bother
emitting an error about a missing semicolon if the statement had a
bug (an rbrace is fine).
2. In do/while parsing, don't require a 'while' to be present if the do
body didn't parse.
This allows us to generate a clean diagnostic for this code:
t.c:1:22: error: expected expression
void foo (void) { do . while (0); }
^
Thanks to Neil for pointing this out.
llvm-svn: 59256
'ParseTentative.cpp' implements the functionality needed to resolve ambiguous C++ statements, to either a declaration or an expression, by "tentatively parsing" them.
llvm-svn: 57084
-Scoping in C99 works good for C++ too, remove the C++-specific comments.
If someone thinks that the C++-specific comments are necessary for clarification, let me know and I'll put them back on.
llvm-svn: 56078
-Remove ParseExpressionWithLeadingIdentifier and ParseAssignmentExprWithLeadingIdentifier.
-Separate ParseLabeledStatement from ParseIdentifierStatement.
llvm-svn: 53376
lib dir and move all the libraries into it. This follows the main
llvm tree, and allows the libraries to be built in parallel. The
top level now enforces that all the libs are built before Driver,
but we don't care what order the libs are built in. This speeds
up parallel builds, particularly incremental ones.
llvm-svn: 48402
Chris Lattner