llvm-project/llvm/test/tools/llvm-nm/format-bsd.test
Fangrui Song cae3b831f4 [llvm-nm] Switch command line parsing from llvm::cl to OptTable
Part of https://lists.llvm.org/pipermail/llvm-dev/2021-July/151622.html
"Binary utilities: switch command line parsing from llvm::cl to OptTable"

Users should generally observe no difference as long as they only use intended
option forms. Behavior changes:

* `-t=d` is removed. Use `-t d` instead.
* `--demangle=0` cannot be used. Omit the option or use `--no-demangle` instead.
* `--help-list` is removed. This is a `cl::` specific option.

Note:

* `-t` diagnostic gets improved.
* This patch avoids cl::opt collision if we decide to support multiplexing for binary utilities
* One-dash long options are still supported.
* The `-s` collision (`-s segment section` for Mach-O) is unfortunate. `-s` means `--print-armap` in GNU nm.
* This patch removes the last `cl::multi_val` use case from the `llvm/lib/Support/CommandLine.cpp` library

`-M` (`--print-armap`), `-U` (`--defined-only`), and `-W` (`--no-weak`)
are now deprecated. They could conflict with future GNU nm options.
(--print-armap has an existing alias -s, so GNU will unlikely add a new one.
--no-weak (not in GNU nm) is rarely used anyway.)

`--just-symbol-name` is now deprecated in favor of
`--format=just-symbols` and `-j`.

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D105330
2021-07-07 13:34:33 -07:00

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## --format-bsd is the default output format of llvm-nm. Show that the default
## and bsd output (including its aliases) match to confirm this.
# RUN: yaml2obj %s -o %t.o
# RUN: llvm-nm %t.o --format=bsd > %t.formatbsd.txt
# RUN: llvm-nm %t.o -f bsd > %t.fbsd.txt
# RUN: llvm-nm %t.o -B > %t.b.txt
# RUN: llvm-nm %t.o > %t.default.txt
# RUN: cmp %t.formatbsd.txt %t.default.txt
# RUN: cmp %t.formatbsd.txt %t.fbsd.txt
# RUN: cmp %t.formatbsd.txt %t.b.txt
## Sanity check that some output is actually printed.
# RUN: FileCheck %s --input-file=%t.default.txt
# CHECK: 0000000000000000 T sym1
# CHECK-NEXT: 0000000000000000 W sym2
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .text
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
Symbols:
- Name: sym1
Section: .text
Binding: STB_GLOBAL
- Name: sym2
Section: .text
Binding: STB_WEAK