Re: On non-Windows, hard depend on uselocale(3)

On 2026-Feb-04, Peter Eisentraut wrote:

> > It corresponds to this stale CF entry,
> > https://commitfest.postgresql.org/patch/5166/
>
> My recollection is that I didn't at the time find any common pattern among
> the failing buildfarm members. So the only way to move forward here would
> be to commit it again and then debug it live via the buildfarm.

Did you try adding $(PTHREAD_CFLAGS) or $(PTHREAD_LIBS) to the compile
line for test_json_parser?

I see that the failure in jackdaw (snapshot 2025-03-28 15:30:44)
was

ccache gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Werror=vla -Wendif-labels -Wmissing-format-attribute -Wimplicit-fallthrough=3 -Wcast-function-type -Wshadow=compatible-local -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -Wno-format-truncation -Wno-stringop-truncation -g -O2 -I. -I. -I../../../../src/include -D_GNU_SOURCE -I/usr/include/libxml2 -c -o test_json_parser_incremental.o test_json_parser_incremental.c
ccache gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Werror=vla -Wendif-labels -Wmissing-format-attribute -Wimplicit-fallthrough=3 -Wcast-function-type -Wshadow=compatible-local -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -Wno-format-truncation -Wno-stringop-truncation -g -O2 test_json_parser_incremental.o -L../../../../src/port -L../../../../src/common -Wl,--as-needed -Wl,-rpath,'/home/debian/17-jackdaw/buildroot/HEAD/inst/lib',--enable-new-dtags -lpgcommon -lpgport -lxslt -lxml2 -lssl -lcrypto -lgssapi_krb5 -lz -lreadline -lpthread -lrt -ldl -lm -o test_json_parser_incremental
ccache gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Werror=vla -Wendif-labels -Wmissing-format-attribute -Wimplicit-fallthrough=3 -Wcast-function-type -Wshadow=compatible-local -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -Wno-format-truncation -Wno-stringop-truncation -g -O2 test_json_parser_incremental.o -L../../../../src/port -L../../../../src/common -Wl,--as-needed -Wl,-rpath,'/home/debian/17-jackdaw/buildroot/HEAD/inst/lib',--enable-new-dtags -lpgcommon_excluded_shlib -L../../../../src/common -lpgcommon_shlib -L../../../../src/port -lpgport_shlib -L../../../../src/interfaces/libpq -lpq -o test_json_parser_incremental_shlib
/usr/bin/ld: ../../../../src/port/libpgport_shlib.a(locale_shlib.o): undefined reference to symbol 'pthread_once@@GLIBC_2.17'
/usr/bin/ld: /lib/aarch64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:30: test_json_parser_incremental_shlib] Error 1

But if you look at how jackdaw compiles, say, ecpglib, there's

ccache gcc -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Werror=vla -Wendif-labels -Wmissing-format-attribute -Wimplicit-fallthrough=3 -Wcast-function-type -Wshadow=compatible-local -Wformat-security -fno-strict-aliasing -fwrapv -fexcess-precision=standard -Wno-format-truncation -Wno-stringop-truncation -g -O2 -pthread -D_REENTRANT -D_THREAD_SAFE -I../include -I../../../../src/interfaces/ecpg/include -I. -I. -I../../../../src/interfaces/ecpg/ecpglib -I../../../../src/interfaces/libpq -I../../../../src/include -D_GNU_SOURCE -I/usr/include/libxml2 -c -o keywords.o keywords.c

note that it has "-pthread", which is not present in the
test_json_parser compile/link. Does this matter because
libpgport_shlib.a needs that? Did maybe test_json_parser not previously
need this locale thingy?

I suspect this is a problem in test_json_parser that somehow got tickled
by your patch, not a problem in your patch.

--
Álvaro Herrera 48°01'N 7°57'E — https://www.EnterpriseDB.com/
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