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Re: Cause of the ?? in backtrace

Rich Rattanni åé:
Why would one get the following when trying to do a backtrace in GDB...
(gdb) bt
#0 0x403cdcb4 in _int_malloc () from /lib/
#1 0x403cedfc in malloc () from /lib/
#2 0x401c4418 in sqlite3MallocRaw () from /usr/lib/
#3 0x401c450c in sqlite3StrNDup () from /usr/lib/
#4 0x401cc070 in sqlite3VdbeChangeP3 () from /usr/lib/
#5 0x401cc0ac in sqlite3VdbeOp3 () from /usr/lib/
#6 0x401ac010 in sqlite3CodeSubselect () from /usr/lib/
#7 0x401ab4b0 in sqlite3ExprCode () from /usr/lib/
#8 0x401abd00 in sqlite3ExprIfFalse () from /usr/lib/
#9 0x401d02cc in sqlite3WhereBegin () from /usr/lib/
#10 0x401bf13c in sqlite3Select () from /usr/lib/
#11 0x401b6978 in sqlite3Parser () from /usr/lib/
#12 0x401c12e0 in sqlite3RunParser () from /usr/lib/
#13 0x47de97e0 in ?? () <------------------------------- This
is my problem
Cannot access memory at address 0x30 <------------|

Just FYI. Last time I encounter such problem and I found that it is not caused with your private code didn't compile with -g, but is caused by your common libc related library didn't contain the debug info.

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