[llvm-bugs] [Bug 30326] New: Firefox -flto=thin build failure

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=30326

            Bug ID: 30326
           Summary: Firefox -flto=thin build failure
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: octoploid at yandex.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

CXXFLAGS="-flto=thin -march=native -fno-strict-aliasing -ffunction-sections
-fdata-sections" 

During final libxul link I get:

ld: /home/markus/llvm/include/llvm/Support/Casting.h:95: static bool
llvm::isa_impl_cl<To, const From*>::doit(const From*) [with To =
llvm::GlobalAlias; From = llvm::GlobalValue]:
 Assertion `Val && "isa<> used on a null pointer"' failed.

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