1ADDR2LINE(1)                 GNU Development Tools                ADDR2LINE(1)
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NAME

6       addr2line - convert addresses or symbol+offset into file names and line
7       numbers
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SYNOPSIS

10       addr2line [-a|--addresses]
11                 [-b bfdname|--target=bfdname]
12                 [-C|--demangle[=style]]
13                 [-r|--no-recurse-limit]
14                 [-R|--recurse-limit]
15                 [-e filename|--exe=filename]
16                 [-f|--functions] [-s|--basename]
17                 [-i|--inlines]
18                 [-p|--pretty-print]
19                 [-j|--section=name]
20                 [-H|--help] [-V|--version]
21                 [addr addr ...]
22

DESCRIPTION

24       addr2line translates addresses or symbol+offset into file names and
25       line numbers.  Given an address or symbol+offset in an executable or an
26       offset in a section of a relocatable object, it uses the debugging
27       information to figure out which file name and line number are
28       associated with it.
29
30       The executable or relocatable object to use is specified with the -e
31       option.  The default is the file a.out.  The section in the relocatable
32       object to use is specified with the -j option.
33
34       addr2line has two modes of operation.
35
36       In the first, hexadecimal addresses or symbol+offset are specified on
37       the command line, and addr2line displays the file name and line number
38       for each address.
39
40       In the second, addr2line reads hexadecimal addresses or symbol+offset
41       from standard input, and prints the file name and line number for each
42       address on standard output.  In this mode, addr2line may be used in a
43       pipe to convert dynamically chosen addresses.
44
45       The format of the output is FILENAME:LINENO.  By default each input
46       address generates one line of output.
47
48       Two options can generate additional lines before each FILENAME:LINENO
49       line (in that order).
50
51       If the -a option is used then a line with the input address is
52       displayed.
53
54       If the -f option is used, then a line with the FUNCTIONNAME is
55       displayed.  This is the name of the function containing the address.
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57       One option can generate additional lines after the FILENAME:LINENO
58       line.
59
60       If the -i option is used and the code at the given address is present
61       there because of inlining by the compiler then additional lines are
62       displayed afterwards.  One or two extra lines (if the -f option is
63       used) are displayed for each inlined function.
64
65       Alternatively if the -p option is used then each input address
66       generates a single, long, output line containing the address, the
67       function name, the file name and the line number.  If the -i option has
68       also been used then any inlined functions will be displayed in the same
69       manner, but on separate lines, and prefixed by the text (inlined by).
70
71       If the file name or function name can not be determined, addr2line will
72       print two question marks in their place.  If the line number can not be
73       determined, addr2line will print 0.
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75       When symbol+offset is used, +offset is optional, except when the symbol
76       is ambigious with a hex number. The resolved symbols can be mangled or
77       unmangled, except unmangled symbols with + are not allowed.
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OPTIONS

80       The long and short forms of options, shown here as alternatives, are
81       equivalent.
82
83       -a
84       --addresses
85           Display the address before the function name, file and line number
86           information.  The address is printed with a 0x prefix to easily
87           identify it.
88
89       -b bfdname
90       --target=bfdname
91           Specify that the object-code format for the object files is
92           bfdname.
93
94       -C
95       --demangle[=style]
96           Decode (demangle) low-level symbol names into user-level names.
97           Besides removing any initial underscore prepended by the system,
98           this makes C++ function names readable.  Different compilers have
99           different mangling styles. The optional demangling style argument
100           can be used to choose an appropriate demangling style for your
101           compiler.
102
103       -e filename
104       --exe=filename
105           Specify the name of the executable for which addresses should be
106           translated.  The default file is a.out.
107
108       -f
109       --functions
110           Display function names as well as file and line number information.
111
112       -s
113       --basenames
114           Display only the base of each file name.
115
116       -i
117       --inlines
118           If the address belongs to a function that was inlined, the source
119           information for all enclosing scopes back to the first non-inlined
120           function will also be printed.  For example, if "main" inlines
121           "callee1" which inlines "callee2", and address is from "callee2",
122           the source information for "callee1" and "main" will also be
123           printed.
124
125       -j
126       --section
127           Read offsets relative to the specified section instead of absolute
128           addresses.
129
130       -p
131       --pretty-print
132           Make the output more human friendly: each location are printed on
133           one line.  If option -i is specified, lines for all enclosing
134           scopes are prefixed with (inlined by).
135
136       -r
137       -R
138       --recurse-limit
139       --no-recurse-limit
140       --recursion-limit
141       --no-recursion-limit
142           Enables or disables a limit on the amount of recursion performed
143           whilst demangling strings.  Since the name mangling formats allow
144           for an infinite level of recursion it is possible to create strings
145           whose decoding will exhaust the amount of stack space available on
146           the host machine, triggering a memory fault.  The limit tries to
147           prevent this from happening by restricting recursion to 2048 levels
148           of nesting.
149
150           The default is for this limit to be enabled, but disabling it may
151           be necessary in order to demangle truly complicated names.  Note
152           however that if the recursion limit is disabled then stack
153           exhaustion is possible and any bug reports about such an event will
154           be rejected.
155
156           The -r option is a synonym for the --no-recurse-limit option.  The
157           -R option is a synonym for the --recurse-limit option.
158
159           Note this option is only effective if the -C or --demangle option
160           has been enabled.
161
162       @file
163           Read command-line options from file.  The options read are inserted
164           in place of the original @file option.  If file does not exist, or
165           cannot be read, then the option will be treated literally, and not
166           removed.
167
168           Options in file are separated by whitespace.  A whitespace
169           character may be included in an option by surrounding the entire
170           option in either single or double quotes.  Any character (including
171           a backslash) may be included by prefixing the character to be
172           included with a backslash.  The file may itself contain additional
173           @file options; any such options will be processed recursively.
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SEE ALSO

176       Info entries for binutils.
177
179       Copyright (c) 1991-2023 Free Software Foundation, Inc.
180
181       Permission is granted to copy, distribute and/or modify this document
182       under the terms of the GNU Free Documentation License, Version 1.3 or
183       any later version published by the Free Software Foundation; with no
184       Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
185       Texts.  A copy of the license is included in the section entitled "GNU
186       Free Documentation License".
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190binutils-2.41                     2023-08-16                      ADDR2LINE(1)
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