Warnings about perl when compiling current HEAD

Hi,
I'm rebuilding my test Pg like weekly, maybe a bit less, and my process
looks like:

export PYTHON="$( which python3 )"
./configure \
--quiet \
--prefix=/home/pgdba/work \
--enable-debug \
--with-pgport=5430 \
--with-tcl \
--with-perl \
--with-python \
--enable-integer-datetimes \
--without-pam \
--without-bonjour \
--with-openssl \
--with-uuid=ossp \
--with-readline \
--with-libxml \
--with-systemd \
--with-zlib \
--with-lz4 \
--with-llvm \
--with-gnu-ld \
--enable-debug --enable-depend --enable-cassert
jobs_count="$( nproc )"
time make -s -j "${jobs_count}"
time make -s -j "${jobs_count}" install
cd contrib
time make -s -j "${jobs_count}"
time make -s -j "${jobs_count}" install

Normally the process is silent, but today I got bunch of warnings. These
are from `make` in top directory, but building contrib generates
warnings too.

Given that it's all about perl and llvm, not sure what has changed to
cause this.

Versions of things that I though are relevant:
=$ dpkg -l | awk '$1=="ii" && $2 ~ /perl|llvm|gcc/' | grep -vP '^ii\s+lib\S+-perl(:amd64)?\s'
ii gcc 4:12.2.0-1 amd64 GNU C compiler
ii gcc-10-base:amd64 10.4.0-5 amd64 GCC, the GNU Compiler Collection (base package)
ii gcc-12 12.2.0-9 amd64 GNU C compiler
ii gcc-12-base:amd64 12.2.0-9 amd64 GCC, the GNU Compiler Collection (base package)
ii gcc-9-base:amd64 9.3.0-22 amd64 GCC, the GNU Compiler Collection (base package)
ii lib32gcc-s1 12.2.0-9 amd64 GCC support library (32 bit Version)
ii libgcc-12-dev:amd64 12.2.0-9 amd64 GCC support library (development files)
ii libgcc-s1:amd64 12.2.0-9 amd64 GCC support library
ii libllvm14:amd64 1:14.0.6-2 amd64 Modular compiler and toolchain technologies, runtime library
ii libperl-dev:amd64 5.36.0-4 amd64 Perl library: development files
ii libperl5.36:amd64 5.36.0-4 amd64 shared Perl library
ii libuno-cppuhelpergcc3-3 1:7.4.2-2 amd64 LibreOffice UNO runtime environment -- CPPU helper library
ii libuno-purpenvhelpergcc3-3 1:7.4.2-2 amd64 LibreOffice UNO runtime environment -- "purpose environment" helper
ii libuno-salhelpergcc3-3 1:7.4.2-2 amd64 LibreOffice UNO runtime environment -- SAL helpers for C++ library
ii llvm 1:14.0-55.2+b1 amd64 Low-Level Virtual Machine (LLVM)
ii llvm-14 1:14.0.6-2 amd64 Modular compiler and toolchain technologies
ii llvm-14-dev 1:14.0.6-2 amd64 Modular compiler and toolchain technologies, libraries and headers
ii llvm-14-linker-tools 1:14.0.6-2 amd64 Modular compiler and toolchain technologies - Plugins
ii llvm-14-runtime 1:14.0.6-2 amd64 Modular compiler and toolchain technologies, IR interpreter
ii llvm-14-tools 1:14.0.6-2 amd64 Modular compiler and toolchain technologies, tools
ii llvm-runtime:amd64 1:14.0-55.2+b1 amd64 Low-Level Virtual Machine (LLVM), bytecode interpreter
ii perl 5.36.0-4 amd64 Larry Wall's Practical Extraction and Report Language
ii perl-base 5.36.0-4 amd64 minimal Perl system
ii perl-doc 5.36.0-4 all Perl documentation
ii perl-modules-5.36 5.36.0-4 all Core Perl modules
ii perl-openssl-defaults:amd64 7+b1 amd64 version compatibility baseline for Perl OpenSSL packages
ii perl-tk 1:804.036-1+b1 amd64 Perl module providing the Tk graphics library

warning log from make:

In file included from /usr/lib/x86_64-linux-gnu/perl/5.36/CORE/perl.h:7242,
from plperl.h:82,
from SPI.xs:15:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/inline.h: In function ‘Perl_cop_file_avn’:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/inline.h:3489:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
3489 | const char *file = CopFILE(cop);
| ^~~~~
In file included from /usr/lib/x86_64-linux-gnu/perl/5.36/CORE/perl.h:4155:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h: In function ‘Perl_newSV_type’:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:97:35: warning: declaration of ‘p_’ shadows a previous local [-Wshadow=compatible-local]
97 | # define MUTABLE_PTR(p) ({ void *p_ = (p); p_; })
| ^~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv.h:1394:54: note: in definition of macro ‘SvSTASH_set’
1394 | (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END
| ^~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:105:32: note: in expansion of macro ‘MUTABLE_PTR’
105 | #define MUTABLE_HV(p) ((HV *)MUTABLE_PTR(p))
| ^~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h:487:29: note: in expansion of macro ‘MUTABLE_HV’
487 | SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv))));
| ^~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:107:32: note: in expansion of macro ‘MUTABLE_PTR’
107 | #define MUTABLE_SV(p) ((SV *)MUTABLE_PTR(p))
| ^~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv.h:346:59: note: in expansion of macro ‘MUTABLE_SV’
346 | #define SvREFCNT_inc(sv) Perl_SvREFCNT_inc(MUTABLE_SV(sv))
| ^~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h:487:40: note: in expansion of macro ‘SvREFCNT_inc’
487 | SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv))));
| ^~~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:97:35: note: shadowed declaration is here
97 | # define MUTABLE_PTR(p) ({ void *p_ = (p); p_; })
| ^~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv.h:1394:54: note: in definition of macro ‘SvSTASH_set’
1394 | (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END
| ^~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:105:32: note: in expansion of macro ‘MUTABLE_PTR’
105 | #define MUTABLE_HV(p) ((HV *)MUTABLE_PTR(p))
| ^~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h:487:29: note: in expansion of macro ‘MUTABLE_HV’
487 | SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv))));
| ^~~~~~~~~~
In file included from /usr/lib/x86_64-linux-gnu/perl/5.36/CORE/perl.h:7242,
from plperl.h:82,
from Util.xs:22:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/inline.h: In function ‘Perl_cop_file_avn’:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/inline.h:3489:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
3489 | const char *file = CopFILE(cop);
| ^~~~~
In file included from /usr/lib/x86_64-linux-gnu/perl/5.36/CORE/perl.h:4155:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h: In function ‘Perl_newSV_type’:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:97:35: warning: declaration of ‘p_’ shadows a previous local [-Wshadow=compatible-local]
97 | # define MUTABLE_PTR(p) ({ void *p_ = (p); p_; })
| ^~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv.h:1394:54: note: in definition of macro ‘SvSTASH_set’
1394 | (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END
| ^~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:105:32: note: in expansion of macro ‘MUTABLE_PTR’
105 | #define MUTABLE_HV(p) ((HV *)MUTABLE_PTR(p))
| ^~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h:487:29: note: in expansion of macro ‘MUTABLE_HV’
487 | SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv))));
| ^~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:107:32: note: in expansion of macro ‘MUTABLE_PTR’
107 | #define MUTABLE_SV(p) ((SV *)MUTABLE_PTR(p))
| ^~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv.h:346:59: note: in expansion of macro ‘MUTABLE_SV’
346 | #define SvREFCNT_inc(sv) Perl_SvREFCNT_inc(MUTABLE_SV(sv))
| ^~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h:487:40: note: in expansion of macro ‘SvREFCNT_inc’
487 | SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv))));
| ^~~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:97:35: note: shadowed declaration is here
97 | # define MUTABLE_PTR(p) ({ void *p_ = (p); p_; })
| ^~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv.h:1394:54: note: in definition of macro ‘SvSTASH_set’
1394 | (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END
| ^~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:105:32: note: in expansion of macro ‘MUTABLE_PTR’
105 | #define MUTABLE_HV(p) ((HV *)MUTABLE_PTR(p))
| ^~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h:487:29: note: in expansion of macro ‘MUTABLE_HV’
487 | SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv))));
| ^~~~~~~~~~
In file included from /usr/lib/x86_64-linux-gnu/perl/5.36/CORE/perl.h:7242,
from plperl.h:82,
from plperl.c:48:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/inline.h: In function ‘Perl_cop_file_avn’:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/inline.h:3489:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
3489 | const char *file = CopFILE(cop);
| ^~~~~
In file included from /usr/lib/x86_64-linux-gnu/perl/5.36/CORE/perl.h:4155:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h: In function ‘Perl_newSV_type’:
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:97:35: warning: declaration of ‘p_’ shadows a previous local [-Wshadow=compatible-local]
97 | # define MUTABLE_PTR(p) ({ void *p_ = (p); p_; })
| ^~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv.h:1394:54: note: in definition of macro ‘SvSTASH_set’
1394 | (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END
| ^~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:105:32: note: in expansion of macro ‘MUTABLE_PTR’
105 | #define MUTABLE_HV(p) ((HV *)MUTABLE_PTR(p))
| ^~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h:487:29: note: in expansion of macro ‘MUTABLE_HV’
487 | SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv))));
| ^~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:107:32: note: in expansion of macro ‘MUTABLE_PTR’
107 | #define MUTABLE_SV(p) ((SV *)MUTABLE_PTR(p))
| ^~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv.h:346:59: note: in expansion of macro ‘MUTABLE_SV’
346 | #define SvREFCNT_inc(sv) Perl_SvREFCNT_inc(MUTABLE_SV(sv))
| ^~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h:487:40: note: in expansion of macro ‘SvREFCNT_inc’
487 | SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv))));
| ^~~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:97:35: note: shadowed declaration is here
97 | # define MUTABLE_PTR(p) ({ void *p_ = (p); p_; })
| ^~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv.h:1394:54: note: in definition of macro ‘SvSTASH_set’
1394 | (((XPVMG*) SvANY(sv))->xmg_stash = (val)); } STMT_END
| ^~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/handy.h:105:32: note: in expansion of macro ‘MUTABLE_PTR’
105 | #define MUTABLE_HV(p) ((HV *)MUTABLE_PTR(p))
| ^~~~~~~~~~~
/usr/lib/x86_64-linux-gnu/perl/5.36/CORE/sv_inline.h:487:29: note: in expansion of macro ‘MUTABLE_HV’
487 | SvSTASH_set(io, MUTABLE_HV(SvREFCNT_inc(GvHV(iogv))));
| ^~~~~~~~~~
In file included from /usr/lib/llvm-14/include/llvm/Analysis/ModuleSummaryAnalysis.h:17,
from llvmjit_inline.cpp:51:
/usr/lib/llvm-14/include/llvm/IR/ModuleSummaryIndex.h: In constructor ‘llvm::ModuleSummaryIndex::ModuleSummaryIndex(bool, bool)’:
/usr/lib/llvm-14/include/llvm/IR/ModuleSummaryIndex.h:1175:73: warning: member ‘llvm::ModuleSummaryIndex::Alloc’ is used uninitialized [-Wuninitialized]
1175 | : HaveGVs(HaveGVs), EnableSplitLTOUnit(EnableSplitLTOUnit), Saver(Alloc),
| ^~~~~

Best regards,

depesz