[Bug binutils/136] New: BFD crashes when cached file can't be reopened

[mikulas at artax dot karlin dot mff dot cuni dot cz]

BFD keeps cache of files and has only few files open at a time. When the file is
not in open-descriptor cache, BFD reopens it. BFD crashes trying to work with
NULL FILE * pointer, when reopening file fails.

A lot of code in bfd expects that bfd_cache_lookup always returns non-zero FILE
* pointer. However bfd_cache_lookup may call bfd_cache_lookup_worker and
bfd_cache_lookup_worker may return NULL if file could not be reopened.

You should either modify bfd_cache_lookup_worker to abort instead of returning
NULL or chech non-null pointer at each call to bfd_cache_lookup.

-- 
           Summary: BFD crashes when cached file can't be reopened
           Product: binutils
           Version: 2.14
            Status: NEW
          Severity: minor
          Priority: P1
         Component: binutils
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: mikulas at artax dot karlin dot mff dot cuni dot cz
                CC: bug-binutils at gnu dot org
 GCC build triplet: i586-pc-linux-gnu
  GCC host triplet: i486-pc-spad
GCC target triplet: i486-pc-spad


http://sources.redhat.com/bugzilla/show_bug.cgi?id=136

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