Date: Sat, 27 May 2023 22:18:24 -0700 From: Enji Cooper <yaneurabeya@gmail.com> To: FreeBSD Current <freebsd-current@freebsd.org> Cc: Dimitry Andric <dim@FreeBSD.org> Subject: "make hierarchy" from main tree breaks c++ headers on older branches with unclear errors if "make install world" is interrupted Message-ID: <E94D1471-8CDC-4AC3-A46B-C22922864637@gmail.com>
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Hi all,
I just tried to run =E2=80=9Cmake hierarchy=E2=80=9D from a main =
tree on a 13.2-RELEASE system, and doing so completely broke my headers.
It took me about 30 minutes to figure out what happened=E2=80=A6 =
/usr/include/c++/v1/__string was a header, whereas on :main it=E2=80=99s =
a directory?!
$ git diff freebsd/releng/13.2 main -- etc/mtree/BSD.include.dist)
...
@@ -47,8 +53,12 @@
..
__ranges
..
+ __string
+ ..
__thread
..
+ __type_traits
+ ..
__utility
..
__variant
@@ -202,6 +212,8 @@
...
$
make hierarchy seems to wipe out the file and replace it with a =
directory, which I guess isn=E2=80=99t terribly confusing since it=E2=80=99=
s just an unlink, but the error messages that followed from c++ was =
confusing; the error message of note was the first part saying __string =
was missing =E2=80=94 the rest was just garbage complaints about C++20 =
extensions, e.g.,
<source>:9:5: warning: use of function template name with no prior =
declaration in function call with explicit template arguments is a C++20 =
extension [-Wc++20-extensions]
I reinstalled the headers by going to lib/libc++ in my =
releng/13.2 tree, building, and installing all of the 13.2-RELEASE =
headers.
This change has been live for almost a year now on :main =E2=80=94=
is this a known caveat when doing a source-based upgrade from =
13.2-RELEASE* to 14.0-CURRENT, i.e., that the installworld (if =
interrupted) could break the c++ compiler?
Thank you,
-Enji
$ git blame etc/mtree/BSD.include.dist
...
81ad626541db9 (Dimitry Andric 2022-07-04 21:20:19 +0200 56) =
__string
81ad626541db9 (Dimitry Andric 2022-07-04 21:20:19 +0200 57) =
..
...
$ git log 81ad626541db9^..81ad626541db9
commit 81ad626541db97eb356e2c1d4a20eb2a26a766ab
Merge: 5fff09660e06 145449b1e420
Author: Dimitry Andric <dim@FreeBSD.org>
Date: Mon Jul 4 21:20:19 2022 +0200
Merge llvm-project main llvmorg-15-init-15358-g53dc0f10787
This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb =
and
openmp to llvmorg-15-init-15358-g53dc0f10787.
PR: 265425
MFC after: 2 weeks
commit 145449b1e420787bb99721a429341fa6be3adfb6 (tag: =
vendor/llvm-project/llvmorg-15-init-15358-g53dc0f107877)
Author: Dimitry Andric <dim@FreeBSD.org>
Date: Sun Jul 3 16:10:23 2022 +0200
Vendor import of llvm-project main =
llvmorg-15-init-15358-g53dc0f107877.
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