[LLVMbugs] [Bug 1969] New: HeaderSearch::LookupSubframeworkHeader() crashes when input comes from stdin

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1969

           Summary: HeaderSearch::LookupSubframeworkHeader() crashes when
                    input comes from stdin
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: preprocessor
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: nunoplopes at sapo.pt
                CC: llvmbugs at cs.uiuc.edu


clang crashes when a objc file is given by stdin. this make the whole objc
rewrite test suite crash on my pc.

patch:


Index: Lex/HeaderSearch.cpp
===================================================================
--- Lex/HeaderSearch.cpp        (revision 46612)
+++ Lex/HeaderSearch.cpp        (working copy)
@@ -296,6 +296,9 @@
   // Framework names must have a '/' in the filename.  Find it.
   const char *SlashPos = std::find(FilenameStart, FilenameEnd, '/');
   if (SlashPos == FilenameEnd) return 0;
+
+  if (ContextFileEnt == 0)
+    return 0;

   // Look up the base framework name of the ContextFileEnt.
   const char *ContextName = ContextFileEnt->getName();


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