[LLVMbugs] [Bug 20246] New: clang-cl needs to put the runtime libraries in a drectve section to enable linking ASAN objects with link.exe

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=20246

            Bug ID: 20246
           Summary: clang-cl needs to put the runtime libraries in a
                    drectve section to enable linking ASAN objects with
                    link.exe
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Driver
          Assignee: unassignedclangbugs at nondot.org
          Reporter: ehsan at mozilla.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Right now ASAN on Windows expects that you link with clang-cl
-fsanitize=address so that the driver would pass the right library names to the
linker.  This was done in r189389 AFAICT.

This has the huge downside of being too difficult to get to work on projects
that link with link.exe directly (such as Firefox).  I think a much better
approach would be to put the path to those libraries in a .drectve section to
pass it to the linker from within the obj file, to avoid needing to pass in the
libraries through the clang-cl driver.

I'm planning on doing this, any objections?

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