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Imported Upstream version 5.18.0.167

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external/llvm/docs/CommandGuide/llvm-symbolizer.rst vendored
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llvm-symbolizer - convert addresses into source code locations
==============================================================
SYNOPSIS
--------
:program:`llvm-symbolizer` [options]
DESCRIPTION
-----------
:program:`llvm-symbolizer` reads object file names and addresses from standard
input and prints corresponding source code locations to standard output.
If object file is specified in command line, :program:`llvm-symbolizer`
processes only addresses from standard input, the rest is output verbatim.
This program uses debug info sections and symbol table in the object files.
EXAMPLE
--------
.. code-block:: console
$ cat addr.txt
a.out 0x4004f4
/tmp/b.out 0x400528
/tmp/c.so 0x710
/tmp/mach_universal_binary:i386 0x1f84
/tmp/mach_universal_binary:x86_64 0x100000f24
$ llvm-symbolizer < addr.txt
main
/tmp/a.cc:4
f(int, int)
/tmp/b.cc:11
h_inlined_into_g
/tmp/header.h:2
g_inlined_into_f
/tmp/header.h:7
f_inlined_into_main
/tmp/source.cc:3
main
/tmp/source.cc:8
_main
/tmp/source_i386.cc:8
_main
/tmp/source_x86_64.cc:8
$ cat addr2.txt
0x4004f4
0x401000
$ llvm-symbolizer -obj=a.out < addr2.txt
main
/tmp/a.cc:4
foo(int)
/tmp/a.cc:12
$cat addr.txt
0x40054d
$llvm-symbolizer -inlining -print-address -pretty-print -obj=addr.exe < addr.txt
0x40054d: inc at /tmp/x.c:3:3
(inlined by) main at /tmp/x.c:9:0
$llvm-symbolizer -inlining -pretty-print -obj=addr.exe < addr.txt
inc at /tmp/x.c:3:3
(inlined by) main at /tmp/x.c:9:0
OPTIONS
-------
.. option:: -obj
Path to object file to be symbolized.
.. option:: -functions=[none|short|linkage]
Specify the way function names are printed (omit function name,
print short function name, or print full linkage name, respectively).
Defaults to ``linkage``.
.. option:: -use-symbol-table
Prefer function names stored in symbol table to function names
in debug info sections. Defaults to true.
.. option:: -demangle
Print demangled function names. Defaults to true.
.. option:: -inlining
If a source code location is in an inlined function, prints all the
inlnied frames. Defaults to true.
.. option:: -default-arch
If a binary contains object files for multiple architectures (e.g. it is a
Mach-O universal binary), symbolize the object file for a given architecture.
You can also specify architecture by writing ``binary_name:arch_name`` in the
input (see example above). If architecture is not specified in either way,
address will not be symbolized. Defaults to empty string.
.. option:: -dsym-hint=<path/to/file.dSYM>
(Darwin-only flag). If the debug info for a binary isn't present in the default
location, look for the debug info at the .dSYM path provided via the
``-dsym-hint`` flag. This flag can be used multiple times.
.. option:: -print-address
Print address before the source code location. Defaults to false.
.. option:: -pretty-print
Print human readable output. If ``-inlining`` is specified, enclosing scope is
prefixed by (inlined by). Refer to listed examples.
EXIT STATUS
-----------
:program:`llvm-symbolizer` returns 0. Other exit codes imply internal program error.