1 The libbacktrace library
2 Initially written by Ian Lance Taylor <iant@golang.org>
4 The libbacktrace library may be linked into a program or library and
5 used to produce symbolic backtraces.
6 Sample uses would be to print a detailed backtrace when an error
7 occurs or to gather detailed profiling information.
9 In general the functions provided by this library are async-signal-safe,
10 meaning that they may be safely called from a signal handler.
11 That said, on systems that use dl_iterate_phdr, such as GNU/Linux,
12 the first call to a libbacktrace function will call dl_iterate_phdr,
13 which is not in general async-signal-safe. Therefore, programs
14 that call libbacktrace from a signal handler should ensure that they
15 make an initial call from outside of a signal handler.
16 Similar considerations apply when arranging to call libbacktrace
17 from within malloc; dl_iterate_phdr can also call malloc,
18 so make an initial call to a libbacktrace function outside of
19 malloc before trying to call libbacktrace functions within malloc.
21 The libbacktrace library is provided under a BSD license.
22 See the source files for the exact license text.
24 The public functions are declared and documented in the header file
25 backtrace.h, which should be #include'd by a user of the library.
27 Building libbacktrace will generate a file backtrace-supported.h,
28 which a user of the library may use to determine whether backtraces
30 See the source file backtrace-supported.h.in for the macros that it
33 As of July 2024, libbacktrace supports ELF, PE/COFF, Mach-O, and
34 XCOFF executables with DWARF debugging information.
35 In other words, it supports GNU/Linux, *BSD, macOS, Windows, and AIX.
36 The library is written to make it straightforward to add support for
37 other object file and debugging formats.
39 The library relies on the C++ unwind API defined at
40 https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
41 This API is provided by GCC and clang.