[LLVMbugs] [Bug 18762] New: Crash in StmtPrinter where some record member-access has been parsed as a pseudo Objective-C message

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=18762

            Bug ID: 18762
           Summary: Crash in StmtPrinter where some record member-access
                    has been parsed as a pseudo Objective-C message
           Product: clang
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: mathieu.baudet at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 12027
  --> http://llvm.org/bugs/attachment.cgi?id=12027&action=edit
Stack trace with my local compilation of clang 3.4

Printing the AST of the following Objective-C program crashes clang 3.3 (Apple
Xcode 5) and my local version of clang 3.4 (see stack trace with symbols).

The issue transposes to a crash of the AST dumper when the problematic
expression "A.foo.x" is moved into a __typeof__().

Not sure if the bug is about the printer or the parser. (The AST looks weird to
me in first place.)


cat >test.m << EOF
struct S { int x; };

@interface A
+ (struct S)foo;
@end

void f() {
  int _y = A.foo.x;
}
EOF

clang -Xclang -ast-print -c test.m

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