[llvm-bugs] [Bug 44198] Report invalid -z flags as errors

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=44198

Fangrui Song <i at maskray.me> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |i at maskray.me
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #1 from Fangrui Song <i at maskray.me> ---
I believe lld already errors on unknown -z options. See
https://github.com/llvm/llvm-project/blob/master/lld/ELF/Driver.cpp#L431

static void checkZOptions(opt::InputArgList &args) {
  for (auto *arg : args.filtered(OPT_z))
    if (!isKnownZFlag(arg->getValue()))
      error("unknown -z value: " + StringRef(arg->getValue()));
}

% clang -fuse-ld=lld a.o -Wl,-z,stack_size=0x1000
ld.lld: error: unknown -z value: stack_size=0x1000
clang-10: error: linker command failed with exit code 1 (use -v to see
invocation)

% ld.lld a.o -z stack_size=0x1000
ld.lld: error: unknown -z value: stack_size=0x1000

Can you check if there is some other issue with the build configuration?

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