vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
247 lines
8.1 KiB
ReStructuredText
247 lines
8.1 KiB
ReStructuredText
llvm-dwarfdump - dump and verify DWARF debug information
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========================================================
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.. program:: llvm-dwarfdump
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SYNOPSIS
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--------
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:program:`llvm-dwarfdump` [*options*] [*filename ...*]
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DESCRIPTION
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-----------
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:program:`llvm-dwarfdump` parses DWARF sections in object files,
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archives, and `.dSYM` bundles and prints their contents in
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human-readable form. Only the .debug_info section is printed unless one of
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the section-specific options or :option:`--all` is specified.
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If no input file is specified, `a.out` is used instead. If `-` is used as the
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input file, :program:`llvm-dwarfdump` reads the input from its standard input
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stream.
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OPTIONS
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-------
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.. option:: -a, --all
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Dump all supported DWARF sections.
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.. option:: --arch=<arch>
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Dump DWARF debug information for the specified CPU architecture.
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Architectures may be specified by name or by number. This
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option can be specified multiple times, once for each desired
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architecture. All CPU architectures will be printed by
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default.
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.. option:: -c, --show-children
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Show a debug info entry's children when selectively printing with
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the `=<offset>` argument of :option:`--debug-info`, or options such
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as :option:`--find` or :option:`--name`.
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.. option:: --color
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Use colors in output.
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.. option:: --error-display=<value>
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Set the level of detail and summary to display when verifying.
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Implies :option:`--verify`. The supported values are:
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`quiet` - Only display whether errors occurred.
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`summary` - Display only a summary of the errors found.
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`details` - Display each error in detail but no summary.
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`full` - Display each error as well as a summary. [default]
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.. option:: -f <name>, --find=<name>
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Search for the exact text <name> in the accelerator tables
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and print the matching debug information entries.
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When there is no accelerator tables or the name of the DIE
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you are looking for is not found in the accelerator tables,
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try using the slower but more complete :option:`--name` option.
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.. option:: -F, --show-form
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Show DWARF form types after the DWARF attribute types.
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.. option:: -h, --help
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Show help and usage for this command.
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.. option:: --help-list
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Show help and usage for this command without grouping the options
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into categories.
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.. option:: -i, --ignore-case
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Ignore case distinctions when using :option:`--name`.
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.. option:: -n <name>, --name=<name>
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Find and print all debug info entries whose name
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(`DW_AT_name` attribute) is <name>.
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.. option:: --lookup=<address>
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Look up <address> in the debug information and print out the file,
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function, block, and line table details.
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.. option:: -o <path>
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Redirect output to a file specified by <path>, where `-` is the
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standard output stream.
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.. option:: -p, --show-parents
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Show a debug info entry's parents when selectively printing with
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the `=<offset>` argument of :option:`--debug-info`, or options such
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as :option:`--find` or :option:`--name`.
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.. option:: --parent-recurse-depth=<N>
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When displaying debug info entry parents, only show them to a
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maximum depth of <N>.
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.. option:: --quiet
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Use with :option:`--verify` to not emit to `STDOUT`.
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.. option:: -r <N>, --recurse-depth=<N>
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When displaying debug info entries, only show children to a maximum
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depth of <N>.
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.. option:: --show-section-sizes
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Show the sizes of all debug sections, expressed in bytes.
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.. option:: --show-sources
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Print all source files mentioned in the debug information. Absolute
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paths are given whenever possible.
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.. option:: --statistics
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Collect debug info quality metrics and print the results
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as machine-readable single-line JSON output. The output
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format is described in the section below (:ref:`stats-format`).
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.. option:: --summarize-types
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Abbreviate the description of type unit entries.
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.. option:: -x, --regex
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Treat any <name> strings as regular expressions when searching
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with :option:`--name`. If :option:`--ignore-case` is also specified,
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the regular expression becomes case-insensitive.
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.. option:: -u, --uuid
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Show the UUID for each architecture.
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.. option:: --diff
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Dump the output in a format that is more friendly for comparing
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DWARF output from two different files.
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.. option:: -v, --verbose
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Display verbose information when dumping. This can help to debug
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DWARF issues.
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.. option:: --verify
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Verify the structure of the DWARF information by verifying the
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compile unit chains, DIE relationships graph, address
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ranges, and more.
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.. option:: --verify-json=<path>
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Output JSON-formatted error summary to the file specified by
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<path>. Implies :option:`--verify`. The output format is described
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in the section below (:ref:`verify-json-format`).
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.. option:: --version
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Display the version of the tool.
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.. option:: --debug-abbrev, --debug-addr, --debug-aranges, --debug-cu-index, --debug-frame [=<offset>], --debug-gnu-pubnames, --debug-gnu-pubtypes, --debug-info [=<offset>], --debug-line [=<offset>], --debug-line-str, --debug-loc [=<offset>], --debug-loclists [=<offset>], --debug-macro, --debug-names, --debug-pubnames, --debug-pubtypes, --debug-ranges, --debug-rnglists, --debug-str, --debug-str-offsets, --debug-tu-index, --debug-types [=<offset>], --eh-frame [=<offset>], --gdb-index, --apple-names, --apple-types, --apple-namespaces, --apple-objc
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Dump the specified DWARF section by name. Only the
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`.debug_info` section is shown by default. Some entries
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support adding an `=<offset>` as a way to provide an
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optional offset of the exact entry to dump within the
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respective section. When an offset is provided, only the
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entry at that offset will be dumped, else the entire
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section will be dumped.
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The :option:`--debug-macro` option prints both the .debug_macro and the .debug_macinfo sections.
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The :option:`--debug-frame` and :option:`--eh-frame` options are aliases, in cases where both sections are present one command outputs both.
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.. option:: @<FILE>
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Read command-line options from `<FILE>`.
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.. _stats-format:
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FORMAT OF STATISTICS OUTPUT
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---------------------------
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The :option:`--statistics` option generates single-line JSON output
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representing quality metrics of the processed debug info. These metrics are
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useful to compare changes between two compilers, particularly for judging
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the effect that a change to the compiler has on the debug info quality.
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The output is formatted as key-value pairs. The first pair contains a version
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number. The following naming scheme is used for the keys:
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- `variables` ==> local variables and parameters
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- `local vars` ==> local variables
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- `params` ==> formal parameters
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For aggregated values, the following keys are used:
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- `sum_of_all_variables(...)` ==> the sum applied to all variables
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- `#bytes` ==> the number of bytes
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- `#variables - entry values ...` ==> the number of variables excluding
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the entry values etc.
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.. _verify-json-format:
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FORMAT OF VERIFY JSON OUTPUT
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----------------------------
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The format of the JSON output created by the :option:`--verify-json` is::
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{
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"error-categories": {
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"<first category description>": {"count": 1234},
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"<next category description>": {"count": 4321}
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},
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"error-count": 5555
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}
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The following is generated if there are no errors reported::
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{
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"error-categories": {},
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"error-count": 0
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}
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EXIT STATUS
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-----------
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:program:`llvm-dwarfdump` returns 0 if the input files were parsed and dumped
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successfully. Otherwise, it returns 1.
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SEE ALSO
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--------
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:manpage:`dsymutil(1)`
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