================
@@ -7105,10 +7105,15 @@ void Clang::ConstructJob(Compilation &C, const
JobAction &JA,
Args.addOptInFlag(CmdArgs, options::OPT_frelaxed_template_template_args,
options::OPT_fno_relaxed_template_template_args);
- // -fsized-deallocation is off by default, as it is an ABI-breaking change
for
- // most platforms.
- Args.addOptInFlag(CmdArgs, options::OPT_fsized_deallocation,
- options::OPT_fno_sized_deallocation);
+ // -fsized-deallocation is on by default in C++14 onwards and otherwise off
+ // by default.
+ if (Arg *A = Args.getLastArg(options::OPT_fsized_deallocation,
----------------
MaskRay wrote:
We only need `-fno-sized-deallocation` for CC1Option. When neither option is
specified, assume implicit `-fsized-deallocation`.
The code change in Darwin.cpp should be changed to a function that decides
whether the default is yes or no.
https://github.com/llvm/llvm-project/pull/83774
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