[llvm-bugs] [Bug 40760] New: Make llvm-symbolizer behave close to GNU's addr2line

via llvm-bugs llvm-bugs at lists.llvm.org
Mon Feb 18 04:49:33 PST 2019


            Bug ID: 40760
           Summary: Make llvm-symbolizer behave close to GNU's addr2line
           Product: tools
           Version: trunk
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: llvm-symbolizer
          Assignee: unassignedbugs at nondot.org
          Reporter: ikudrin at accesssoftek.com
                CC: llvm-bugs at lists.llvm.org

We have several differences in the tool's behavior which make it hard to be a
drop-in replacement for addr2line.
In particular:

* llvm-symbolizer has -i, -f and -C options "on" by default;

* llvm-symbolizer prints line and position while addr2line prints only line.

* addr2line allows more flexible usage of the "-e" option.
  For example "-fe <file>" and "-e<file>" command lines are allowed.

While we probably should not change the behavior of the existing tool, which
might affect parsers of its output, can we have another tool, say,
"llvm-addr2line", which would behave close to GNU's one? Something similar to
that we have with "llvm-readobj"/"llvm-readelf".

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