[LLVMbugs] [Bug 9419] New: assert "no type attributes in the expected location" in simple (invalid) construct

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9419

           Summary: assert "no type attributes in the expected location"
                    in simple (invalid) construct
           Product: clang
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: devlists at shadowlab.org
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=6289)
 --> (http://llvm.org/bugs/attachment.cgi?id=6289)
Test case

When parsing the very simple following code using clang, it asserts (and so
abort) instead of just emitting a diagnostic.

------- attr.m

@interface Foo { id ivar __weak; }
@end

------------

% clang --version
clang version 2.9 (trunk 127155)
Target: x86_64-apple-darwin10
Thread model: posix

% clang -c attr.m 
attr.m:2:26: error: multiple garbage collection attributes specified for type
@interface Foo { id ivar __weak; }
                         ^
<built-in>:140:31: note: instantiated from:
#define __weak __attribute__((objc_gc(weak)))
                              ^
Assertion failed: (attrs && "no type attributes in the expected location!"),
function fillAttributedTypeLoc, file
/Volumes/MacPro/Projects/OpenSource/llvm/tools/clang/lib/Sema/SemaType.cpp,
line 2166.
[…]
5  clang             0x00000001000116c8 __assert_rtn + 56
6  clang             0x000000010049aae5
fillAttributedTypeLoc(clang::AttributedTypeLoc, clang::AttributeList const*) +
437
7  clang             0x000000010049ac6f clang::TypeLocVisitor<(anonymous
namespace)::TypeSpecLocFiller, void>::Visit(clang::UnqualTypeLoc) + 271
8  clang             0x000000010049a6aa
clang::Sema::GetTypeSourceInfoForDeclarator(clang::Declarator&,
clang::QualType, clang::TypeSourceInfo*) + 1770
9  clang             0x000000010049846a
clang::Sema::GetTypeForDeclarator(clang::Declarator&, clang::Scope*,
clang::TagDecl**, bool) + 17402
10 clang             0x00000001002f676f clang::Sema::ActOnIvar(clang::Scope*,
clang::SourceLocation, clang::Decl*, clang::Declarator&, clang::Expr*,
clang::tok::ObjCKeywordKind) + 143
[…]

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