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b450e10273
Note that this includes Nick's fix from edf64cd235 which
landed upstream a bit differently as r13-1566-g9ed57796235abc in GCC.
This pulls in libbacktrace as of r14-9404-gc775a030af9cad in GCC trunk.
Note that I have dropped a top-level Darwin change from r14-4825-g6a6d3817afa02b
which would've required an autoreconf, as it should be handled separately.
Approved-By: Tom Tromey <tom@tromey.com>
32 lines
1.3 KiB
Plaintext
32 lines
1.3 KiB
Plaintext
The libbacktrace library
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Initially written by Ian Lance Taylor <iant@golang.org>
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The libbacktrace library may be linked into a program or library and
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used to produce symbolic backtraces.
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Sample uses would be to print a detailed backtrace when an error
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occurs or to gather detailed profiling information.
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In general the functions provided by this library are async-signal-safe,
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meaning that they may be safely called from a signal handler.
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The libbacktrace library is provided under a BSD license.
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See the source files for the exact license text.
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The public functions are declared and documented in the header file
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backtrace.h, which should be #include'd by a user of the library.
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Building libbacktrace will generate a file backtrace-supported.h,
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which a user of the library may use to determine whether backtraces
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will work.
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See the source file backtrace-supported.h.in for the macros that it
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defines.
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As of October 2020, libbacktrace supports ELF, PE/COFF, Mach-O, and
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XCOFF executables with DWARF debugging information.
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In other words, it supports GNU/Linux, *BSD, macOS, Windows, and AIX.
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The library is written to make it straightforward to add support for
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other object file and debugging formats.
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The library relies on the C++ unwind API defined at
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https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
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This API is provided by GCC and clang.
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