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[Bug backtrace/13849] New: gdb unable to find file and lineno inbacktrace, even though break file:line works and finds the same address


http://sourceware.org/bugzilla/show_bug.cgi?id=13849

             Bug #: 13849
           Summary: gdb unable to find file and lineno in backtrace, even
                    though break file:line works and finds the same
                    address
           Product: gdb
           Version: 7.4
            Status: NEW
          Severity: critical
          Priority: P2
         Component: backtrace
        AssignedTo: unassigned@sourceware.org
        ReportedBy: navinkumar+bugs@gmail.com
    Classification: Unclassified


Created attachment 6288
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6288
gdb output showing "break file:line" succeeds and "list *address" fails

Analyzing a core file, "where" displays the backtrace, and correctly resolves
addresses to symbol names, but is unable to find file:lineno for many of the
frames and fails to display any other debug info (e.g. local variables,
argument values, etc.) for these frames.

The binary is compiled with gcc 4.5.3 using -O0 -g3 flags.

Curiously, "break file:lineno" works in gdb for these frames, and "info b"
lists the correct functions and addresess, but "list *(address)" to do the
reverse, using the exact same address "info b" shows, gives the error "No
source file for address".

This is affecting our ability to analyze our corefile and without knowing the
local variables and argument values we are unable to proceed diagnosing our
application.

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