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

6       addr2line - convert addresses into file names and line numbers
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SYNOPSIS

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

DESCRIPTION

23       addr2line translates addresses into file names and line numbers.  Given
24       an address in an executable or an offset in a section of a relocatable
25       object, it uses the debugging information to figure out which file name
26       and line number are associated with it.
27
28       The executable or relocatable object to use is specified with the -e
29       option.  The default is the file a.out.  The section in the relocatable
30       object to use is specified with the -j option.
31
32       addr2line has two modes of operation.
33
34       In the first, hexadecimal addresses are specified on the command line,
35       and addr2line displays the file name and line number for each address.
36
37       In the second, addr2line reads hexadecimal addresses from standard
38       input, and prints the file name and line number for each address on
39       standard output.  In this mode, addr2line may be used in a pipe to
40       convert dynamically chosen addresses.
41
42       The format of the output is FILENAME:LINENO.  By default each input
43       address generates one line of output.
44
45       Two options can generate additional lines before each FILENAME:LINENO
46       line (in that order).
47
48       If the -a option is used then a line with the input address is
49       displayed.
50
51       If the -f option is used, then a line with the FUNCTIONNAME is
52       displayed.  This is the name of the function containing the address.
53
54       One option can generate additional lines after the FILENAME:LINENO
55       line.
56
57       If the -i option is used and the code at the given address is present
58       there because of inlining by the compiler then additional lines are
59       displayed afterwards.  One or two extra lines (if the -f option is
60       used) are displayed for each inlined function.
61
62       Alternatively if the -p option is used then each input address
63       generates a single, long, output line containing the address, the
64       function name, the file name and the line number.  If the -i option has
65       also been used then any inlined functions will be displayed in the same
66       manner, but on separate lines, and prefixed by the text (inlined by).
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68       If the file name or function name can not be determined, addr2line will
69       print two question marks in their place.  If the line number can not be
70       determined, addr2line will print 0.
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OPTIONS

73       The long and short forms of options, shown here as alternatives, are
74       equivalent.
75
76       -a
77       --addresses
78           Display the address before the function name, file and line number
79           information.  The address is printed with a 0x prefix to easily
80           identify it.
81
82       -b bfdname
83       --target=bfdname
84           Specify that the object-code format for the object files is
85           bfdname.
86
87       -C
88       --demangle[=style]
89           Decode (demangle) low-level symbol names into user-level names.
90           Besides removing any initial underscore prepended by the system,
91           this makes C++ function names readable.  Different compilers have
92           different mangling styles. The optional demangling style argument
93           can be used to choose an appropriate demangling style for your
94           compiler.
95
96       -e filename
97       --exe=filename
98           Specify the name of the executable for which addresses should be
99           translated.  The default file is a.out.
100
101       -f
102       --functions
103           Display function names as well as file and line number information.
104
105       -s
106       --basenames
107           Display only the base of each file name.
108
109       -i
110       --inlines
111           If the address belongs to a function that was inlined, the source
112           information for all enclosing scopes back to the first non-inlined
113           function will also be printed.  For example, if "main" inlines
114           "callee1" which inlines "callee2", and address is from "callee2",
115           the source information for "callee1" and "main" will also be
116           printed.
117
118       -j
119       --section
120           Read offsets relative to the specified section instead of absolute
121           addresses.
122
123       -p
124       --pretty-print
125           Make the output more human friendly: each location are printed on
126           one line.  If option -i is specified, lines for all enclosing
127           scopes are prefixed with (inlined by).
128
129       -r
130       -R
131       --recurse-limit
132       --no-recurse-limit
133       --recursion-limit
134       --no-recursion-limit
135           Enables or disables a limit on the amount of recursion performed
136           whilst demangling strings.  Since the name mangling formats allow
137           for an inifinite level of recursion it is possible to create
138           strings whose decoding will exhaust the amount of stack space
139           available on the host machine, triggering a memory fault.  The
140           limit tries to prevent this from happening by restricting recursion
141           to 2048 levels of nesting.
142
143           The default is for this limit to be enabled, but disabling it may
144           be necessary in order to demangle truly complicated names.  Note
145           however that if the recursion limit is disabled then stack
146           exhaustion is possible and any bug reports about such an event will
147           be rejected.
148
149           The -r option is a synonym for the --no-recurse-limit option.  The
150           -R option is a synonym for the --recurse-limit option.
151
152           Note this option is only effective if the -C or --demangle option
153           has been enabled.
154
155       @file
156           Read command-line options from file.  The options read are inserted
157           in place of the original @file option.  If file does not exist, or
158           cannot be read, then the option will be treated literally, and not
159           removed.
160
161           Options in file are separated by whitespace.  A whitespace
162           character may be included in an option by surrounding the entire
163           option in either single or double quotes.  Any character (including
164           a backslash) may be included by prefixing the character to be
165           included with a backslash.  The file may itself contain additional
166           @file options; any such options will be processed recursively.
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SEE ALSO

169       Info entries for binutils.
170
172       Copyright (c) 1991-2020 Free Software Foundation, Inc.
173
174       Permission is granted to copy, distribute and/or modify this document
175       under the terms of the GNU Free Documentation License, Version 1.3 or
176       any later version published by the Free Software Foundation; with no
177       Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
178       Texts.  A copy of the license is included in the section entitled "GNU
179       Free Documentation License".
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183binutils-2.34                     2021-01-28                      ADDR2LINE(1)
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