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2009-04-21Fix rdar://6814047, a crash on invalid in blocks code I noticed whenChris Lattner
working on the previous fix. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69742 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21fix marking of nested blocks with the "hasBlockDeclRefExprs" toChris Lattner
mark exactly the blocks which have references that are "live through". This fixes a rejects valid: rdar://6808730 - [sema] [blocks] block rejected at global scope git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69738 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Lazy deserialization of the declaration chains associated withDouglas Gregor
identifiers from a precompiled header. This patch changes the primary name lookup method for entities within a precompiled header. Previously, we would load all of the names of declarations at translation unit scope into a large DenseMap (inside the TranslationUnitDecl's DeclContext), and then perform a special "last resort" lookup into this DeclContext when we knew there was a PCH file (see Sema::LookupName). Now, when we see an identifier named for the first time, we load all of the declarations with that name that are visible from the translation unit into the IdentifierInfo's chain of declarations. Thus, the explicit "look into the translation unit's DeclContext" code is gone, and Sema effectively uses the same IdentifierInfo-based name lookup mechanism whether we are using a PCH file or not. This approach should help PCH scale with the size of the input program rather than the size of the PCH file. The "Hello, World!" application with Carbon.h as a PCH file now loads 20% of the identifiers in the PCH file rather than 85% of the identifiers. 90% of the 20% of identifiers loaded are actually loaded when we deserialize the preprocessor state. The next step is to make the preprocessor load macros lazily, which should drastically reduce the number of types, declarations, and identifiers loaded for "Hello, World". git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69737 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21this is a warning now, return a well formed ast.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69731 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Make sure to mark the interface as completed when we see anDaniel Dunbar
@implementation that closes a @class delcaration. - I don't know how to make a test case for this, but this strengthens the invariants that hold internally. The functionality change here is the edit to SemaDeclObjC.cpp. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69728 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Patch to diagnose use of objc's @defs in nonfragile abi.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69710 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21reject sizeof(itf) when itf is a forward declared interface, or whenChris Lattner
in non-fragile abi mode. rdar://6811884 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69701 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Explictly track tentative definitions within Sema, then hand thoseDouglas Gregor
tentative definitions off to the ASTConsumer at the end of the translation unit. Eliminate CodeGen's internal tracking of tentative definitions, and instead hook into ASTConsumer::CompleteTentativeDefinition. Also, tweak the definition-deferal logic for C++, where there are no tentative definitions. Fixes <rdar://problem/6808352>, and will make it much easier for precompiled headers to cope with tentative definitions in the future. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69681 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21implement semantic analysis for @synchronized, fixing a crash on invalidChris Lattner
rdar://6810940 - @synchronized has no sema checks git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69670 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21add support for goto checking and @synchronized blocks,Chris Lattner
rdar://6810106 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69667 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Kill ASTContext::[gs]etFieldForDecl, instead we just lookup thingsDaniel Dunbar
when we need them -- which is exactly what some code was already doing! - No intended functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69648 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20Add pch reader/writer support for ObjCContainerDecl, ObjCInterfaceDecl, & ↵Steve Naroff
ObjCIvarDecl. Next step: Add selector support to PCHWriter::AddDeclarationName(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69619 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20the __gnuc_inline__ attribute is actually named __gnu_inline__,Chris Lattner
PR4023 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69618 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20clean up anonymous bitfield diagnostics, PR4017Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69608 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20Introduce the notion of a SemaConsumer, which is an ASTConsumer thatDouglas Gregor
also gets access to the Sema object performing semantic analysis. This will be used by the PCH writer to serialize Sema state. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69595 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20Add pch reader/writer support for ObjCMethodDecl.Steve Naroff
Test will be enabled with ObjCInterfaceDecl is added. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69594 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-20Some cleanup and bug-fixing for address-of checking. This causes a couple of Eli Friedman
minor accepts-invalid regressions, but we weren't really rejecting them for the right reason. We really need a more general solution to detect all the cases of the promotion of arrays with a register storage class. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69586 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19Conditional operator C++ checking complete. What issues remain are in more ↵Sebastian Redl
general code. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69555 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19Print an error for uses of __thread on targets which don't support it.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69553 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19Bring member pointer operands of the conditional operator to a common type. ↵Sebastian Redl
We're getting there ... git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69548 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19Add more thorough/correct checking for invalid __thread specifiers.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69542 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19Another piece of the conditional operator puzzle. We'll want to use ↵Sebastian Redl
FindCompositePointerType in some other places, too. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69534 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19rearrange #include order.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69511 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19run the jump checker on blocks, even though they don't have gotos,Chris Lattner
they do allow switches. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69510 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19add a new Sema::CurFunctionNeedsScopeChecking bool that is used to avoid Chris Lattner
calling into the jump checker when a function or method is known to contain no VLAs or @try blocks. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69509 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19move jump scope checking and related code out into its own file, SemaDecl.cpp isChris Lattner
already too large. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69505 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19rewrite an O(N^2) algorithm to be O(n).Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69500 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19second half of indirect jump checking: make sure that any Chris Lattner
address taken labels are in function scope git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69499 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19First half of jump scope checking for indirect goto.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69498 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-19Add location info for indirect goto.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69497 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18reimplement DeclStmt handling so that we correctly handle intermixed Chris Lattner
VLA's and statement expressions. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69491 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18the scope checker does work with objc methods, add testcase.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69487 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18I didn't understand how @catches were chained. Now that I get it, fixChris Lattner
the scope checker to not think @catches are nested in each other, eliminating some bogus notes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69486 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18forgot to commit this before.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69480 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18reject invalid jumps among pieces of @try blocks. This seems to workChris Lattner
reasonably well except for the problem that @catches are nested within each other in the AST, giving the ugly diagnostics in L8. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69477 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18unconditionally check for goto correctness. This is because switchChris Lattner
statements don't end up in the LabelMap so we don't have a quick way to filter them. We could add state to Sema (a "has vla" and "has jump" bit) to try to filter this out, but that would be sort of gross and I'm not convinced it is the best way. Thoughts welcome. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69476 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18abstract the SwitchStack for blocks just like we do the goto labels.Chris Lattner
This fixes a crash on invalid (test10). rdar://6805469 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69465 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18fix two error paths out of ParseBlockLiteralExpression toChris Lattner
call ActOnBlockError so that CurBlock gets popped. This fixes a crash on test/block-syntax-error.c when this new assertion is enabled. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69464 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18refactor some code, adding a new getLabelMap() accessor methodChris Lattner
so that clients can't poke the function-local one when they really want the current block label. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69463 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18Improve switch diagnostic to emit the "jump" message on theChris Lattner
specific bad case instead of on the switch. Putting it on the switch means you don't know what case is the problem. For example: scope-check.c:54:3: error: illegal switch case into protected scope case 2: ^ scope-check.c:53:9: note: jump bypasses initialization of variable length array int a[x]; ^ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69462 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18first step to getting switches giving "jump into vla scope" errors.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69461 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18fix error recovery in the case of a jump to a label with no definitionChris Lattner
to create a well formed AST instead of a dangling pointer. This resolves several fixme's. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69459 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18rewrite the goto scope checking code to be more efficient, simpler,Chris Lattner
produce better diagnostics, and be more correct in ObjC cases (fixing rdar://6803963). An example is that we now diagnose: int test1(int x) { goto L; int a[x]; int b[x]; L: return sizeof a; } with: scope-check.c:15:3: error: illegal goto into protected scope goto L; ^ scope-check.c:17:7: note: scope created by variable length array int b[x]; ^ scope-check.c:16:7: note: scope created by variable length array int a[x]; ^ instead of just saying "invalid jump". An ObjC example is: void test1() { goto L; @try { L: ; } @finally { } } t.m:6:3: error: illegal goto into protected scope goto L; ^ t.m:7:3: note: scope created by @try block @try { ^ There are a whole ton of fixme's for stuff to do, but I believe that this is a monotonic improvement over what we had. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69437 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18don't evaluate ->child_end() every time through the loop, or *i frequently ↵Chris Lattner
within it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69431 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18split code out into a new CheckFunctionJumpScopes routine,Chris Lattner
add some comments, change type from void* -> Stmt*, use smallvector instead of vector. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69430 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18make scope checking be static functions instead of sema methods.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69429 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-18FunctionDecl::getBody() is getting an ASTContext argument for use inDouglas Gregor
lazy PCH deserialization. Propagate that argument wherever it needs to be. No functionality change, except that I've tightened up a few PCH tests in preparation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69406 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-17tweak redefinition of a typedef a bit to fix a couple of problems:Chris Lattner
1. We had logic in sema to decide whether or not to emit the error based on manually checking whether in a system header file. 2. we were allowing redefinitions of typedefs in class scope in C++ if in header file. 3. there was no way to force typedef redefinitions to be accepted by the C compiler, which annoys me when stripping linemarkers out of .i files. The fix is to split the C++ class typedef redefinition path from the C path, and change the C path to be a warning that normally maps to error. This causes it to properly be ignored in system headers, etc. and gives us a way to control it. Passing -Wtypedef-redefinition now turns the error into a warning. One behavior change is that we now diagnose cases where you redefine a typedef in your .c file that was defined in a header file. This seems like reasonable behavior, and the diagnostic now indicates that it can be controlled with -Wtypedef-redefinition. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69391 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-17fix a crash on invalid by making ActOnDeclarator create decl withChris Lattner
a dummy *function* type when it is recovering and knows it needs a function. rdar://6802350 - clang crash on invalid input git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69374 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-17Implement lvalue test for conditional expressions.Sebastian Redl
Add a few commented lines to the test case that point out things that don't work yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69354 91177308-0d34-0410-b5e6-96231b3b80d8
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