[llvm-bugs] [Bug 26584] New: crash on invalid with switch containing static local inside invalid function

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=26584

            Bug ID: 26584
           Summary: crash on invalid with switch containing static local
                    inside invalid function
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: richard-llvm at metafoo.co.uk
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

This causes Clang to crash / assert:

#define A B B B B B B B B B B 
#define B C C C C C C C C C C
#define C D D D D D D D D D D
#define D E E E E E E E E E E
#define E F F F F F F F F F F
#define F { int n = 0; (void)n; }
void f() { A }

class Foo {};

class Bar {
  void Baz();
};

namespace {
void Bar::Baz() {
  switch (0) static Foo foo;
  switch (0) static Foo foo;
  switch (0) static Foo foo;
}


The assertion is:

include/llvm/ADT/SmallVector.h:164: reference
llvm::SmallVectorTemplateCommon<clang::SwitchStmt *, void>::back() [T =
clang::SwitchStmt *]: Assertion `!empty()' failed.

within clang::Sema::ActOnFinishSwitchStmt(clang::SourceLocation, clang::Stmt*,
clang::Stmt*).

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