[LLVMbugs] [Bug 21891] New: Assertion failed: Depth <= MaxDepth && "Limit Search Depth"

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=21891

            Bug ID: 21891
           Summary: Assertion failed: Depth <= MaxDepth && "Limit Search
                    Depth"
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: clangbugs.10.mdwxzxkl at spamgourmet.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 13522
  --> http://llvm.org/bugs/attachment.cgi?id=13522&action=edit
preprocessed source

When compiling the attached source file, Clang crashes with the error message:

Assertion failed: Depth <= MaxDepth && "Limit Search Depth", file
..\lib\Analysis\ValueTracking.cpp, line 747

The attached code is not a pathological case, but does actually compute
something useful (that is, the logarithm to base ten). Clang does not crash
when the __builtin_assume is removed.

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