Move Identifier/Loc instance variables (and associated getters/setters) down from Decl to ScopedDecl/FieldDecl.
Objc AST's can now inherit from Decl without getting instance variables and types that are C specific. For now, I am keeping NextDeclarator, since I believe it may be useful to ObjC. If not, it can be moved later.
llvm-svn: 41934
Move DumpSourceRange() to DumpStmt().
Now -parse-ast-dump will display source range info for all stmts/exprs.
One day we should implement the source range protocol for Decls.
llvm-svn: 41670
warn about the last stmt in a stmtexpr, f.e. there should be no warning for:
int maxval_stmt_expr(int x, int y) {
return ({int _a = x, _b = y; _a > _b ? _a : _b; });
}
llvm-svn: 41655
"return of stack addresses." ParseReturnStmt now calls CheckReturnStackAddr
to determine if the expression in the return statement evaluates to an
address of a stack variable. If so, we issue a warning.
llvm-svn: 41141
This resulted in the following errors when compiling promote_types_in_proto.c test...
[dylan:~/llvm/tools/clang] admin% ../../Debug/bin/clang test/Parser/promote_types_in_proto.c
test/Parser/promote_types_in_proto.c:7:24: error: incompatible types passing 'char *[]' to function expecting 'char *const []'
arrayPromotion(argv);
~~~~~~~~~~~~~~ ^~~~
test/Parser/promote_types_in_proto.c:8:27: error: incompatible types passing 'void (char *const [])' to function expecting 'void (char *const [])'
functionPromotion(arrayPromotion);
~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~~~
2 diagnostics generated.
When fixing this, noticed that both ParseCallExpr() and ParseReturnStmt() were prematurely comparing types for
equivalence. This is incorrect (since the expr. promotions haven't been done yet). To fix this, I moved the
check "down" to Sema::CheckAssignmentConstraints().
I also converted Type::isArrayType() to the modern API (since I needed it). Still more Type predicates to
convert.
llvm-svn: 40475
1) fix a crash on test/Sema/default.c by making
sure that the switch scope is non-null.
2) if there is an error sema'ing a default or case stmt,
make sure to return the substmt up, so that the error
recovery code has more acurate info to continue with.
llvm-svn: 40134
needs to query the expression for the type. Since both these functions guarantee the expression
contains a valid type, removed old/vacuous asserts (from code calling both of these routines).
llvm-svn: 39930
- Fixed a recent regression discovered by Keith Bauer (thanks!).
The fix involved adding (back) two arguments to UsualArithmeticConversions.
Without the reference arguments, no unary conversions were being passed back
to the caller. This had the effect of turning off the UsualUnaryConversions.
- Refactored CheckAssignmentConstraints into 3 functions. CheckAssignmentConstraints,
CheckSingleAssignmentConstraints, and CheckCompoundAssignmentConstraints.
- Changed the argument type of DefaultFunctionArrayConversion from QualType->Expr*&.
- Removed a bunch of casts in routines I was working on (cleanup).
- Fixed the visitor for ImplicitCastExpr (oops).
llvm-svn: 39840
out of the llvm namespace. This makes the clang namespace be a sibling of
llvm instead of being a child.
The good thing about this is that it makes many things unambiguous. The
bad things is that many things in the llvm namespace (notably data structures
like smallvector) now require an llvm:: qualifier. IMO, libsystem and libsupport
should be split out of llvm into their own namespace in the future, which will fix
this issue.
llvm-svn: 39659
Submitted by:
Reviewed by:
The following code illustrates a bug in the semantic analysis for assignments:
int func() {
int *P;
char *x;
P = x; // type of this assignment expression should be "int *", NOT "char *".
}
While the type checking/diagnostics are correct, the type of the assignment
expression is incorrect (which shows up during code gen). With the fix,
the llvm code looks correct...
[dylan:~/llvm/tools/clang] admin% ../../Debug/bin/clang cast.c -emit-llvm
cast.c:4:5: warning: incompatible pointer types assigning 'char *' to 'int *'
P = x; // type of assignment expression is "int *", NOT "char *".
~ ^ ~
; ModuleID = 'foo'
define i32 @func() {
entry:
%P = alloca i32* ; <i32**> [#uses=1]
%x = alloca i8* ; <i8**> [#uses=1]
%allocapt = bitcast i32 undef to i32 ; <i32> [#uses=0]
%tmp = load i8** %x ; <i8*> [#uses=1]
%conv = bitcast i8* %tmp to i32* ; <i32*> [#uses=1]
store i32* %conv, i32** %P
ret i32 undef
}
Even though the fix was simple, I decided to rename/refactor the surrounding code
to make a clearer distinction between constraint checking and conversion.
- Renamed AssignmentConversionResult -> AssignmentCheckResult.
- Renamed UsualAssignmentConversions -> CheckAssignmentConstraints.
- Changed the return type of CheckAssignmentConstraints and CheckPointerTypesForAssignment
from QualType -> AssignmentCheckResult. These routines no longer take a reference to the result (obviously).
- Changed CheckAssignmentOperands to return the correct type (with spec annotations).
llvm-svn: 39601
Submitted by:
Reviewed by:
Fixed an "impurity" in the typechecking code (to more closely model the
C99 spec)...
- Added function Sema::DefaultFunctionArrayConversion(). This is called
by UsualUnaryConversions(). It is also called from several contexts that
don't call for integer promotions (logical negation for expressions, and
while/if/do/for conditions in statements). It is also used in
UsualAssignmentConversions (which is cleaner than the check I was using
before).
- Changed the name from UsualUnaryConversion->UsualUnaryConversions.
- Added comments to the header.
Since several contexts don't call for integer
promotions,
llvm-svn: 39581
Anders Carlsson