[LLVMbugs] [Bug 23017] New: Segmentation fault in std::regex

[bugzilla-daemon at llvm.org]

https://llvm.org/bugs/show_bug.cgi?id=23017

            Bug ID: 23017
           Summary: Segmentation fault in std::regex
           Product: libc++
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: All Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: tkoeppe at google.com
                CC: llvmbugs at cs.uiuc.edu, mclow.lists at gmail.com
    Classification: Unclassified

The following program causes a segfault (compiled with Clang 3.7 and libc++
from head):

    #include <regex>
    int main() { std::regex pattern(""); }

(I noticed that r232733 changed the regex code; perhaps this is related? I
didn't have this crash before that revision.)

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