http://sourceware.org/bugzilla/show_bug.cgi?id=15026
Bug #: 15026
Summary: addr2line pretty-print for unknown symbols
Product: binutils
Version: 2.23
Status: NEW
Severity: enhancement
Priority: P2
Component: binutils
AssignedTo: unassig...@sourceware.org
ReportedBy: dhe...@gmail.com
Classification: Unclassified
addr2line, when used with options -f and -p combined, does not output a single
line for unknown symbols. Instead, it outputs two lines:
??
??:0
Which is in contrast with the output of other symbols (in a single line).
The man page does not precisely define this behavior:
"If the -p option is used then the output for each input address is displayed
on one, possibly quite long, line. If -p is not used then the output is broken
up into multiple lines, based on the paragraphs above."
"If the file name or function name can not be determined, addr2line will print
two question marks in their place. If the line number can not be determined,
addr2line will print 0."
However, this is quite annoying when producing scripts, since the unknown
symbol is the only exception that requires a particular processing. It seems it
would be more coherent to only output a single line containing "??:0" in this
case.
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