bneradt commented on PR #13187:
URL: https://github.com/apache/trafficserver/pull/13187#issuecomment-4545209907
Note, we see this in the CI failures:
```
FAILED: lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/test_MemArena.cc.o
/usr/sbin/ccache /usr/sbin/c++ -DDEBUG -DOPENSSL_API_COMPAT=10002
-DOPENSSL_IS_OPENSSL3 -DPACKAGE_NAME="\"Apache Traffic Server\""
-DPACKAGE_VERSION=\"11.0.0\" -D_DEBUG -Dlinux
-I/home/jenkins/workspace/Github_Builds/autest/src/include
-I/home/jenkins/workspace/Github_Builds/autest/src/build/include
-I/home/jenkins/workspace/Github_Builds/autest/src/lib/swoc/include
-I/home/jenkins/workspace/Github_Builds/autest/src/lib/Catch2/src/catch2/..
-I/home/jenkins/workspace/Github_Builds/autest/src/build/lib/Catch2/generated-includes
-pthread -g -std=c++17 -DENABLE_SYSTEMTAP_PROBES -Wno-invalid-offsetof
-Wno-shadow -Wall -Wextra -Werror -Wno-unused-parameter -Wno-format-truncation
-Wno-unused-variable -Wno-error=parentheses -Werror -MD -MT
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/test_MemArena.cc.o -MF
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/test_MemArena.cc.o.d -o
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/test_MemArena.cc.o -c
/home/jenkins/workspace/Github_Builds/au
test/src/lib/swoc/unit_tests/test_MemArena.cc
../lib/swoc/unit_tests/test_MemArena.cc: In function 'void
CATCH2_INTERNAL_TEST_12()':
../lib/swoc/unit_tests/test_MemArena.cc:334:15: error: conversion from
'<brace-enclosed initializer list>' to 'const swoc::_1_5_15::TextView' is
ambiguous
334 | localize(*arena, {buffer, n});
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
../lib/swoc/unit_tests/test_MemArena.cc:334:15: note: there are 2 candidates
In file included from ../lib/swoc/include/swoc/MemArena.h:23,
from ../lib/swoc/unit_tests/test_MemArena.cc:29:
../lib/swoc/include/swoc/TextView.h:1135:20: note: candidate 1: 'constexpr
swoc::_1_5_15::TextView::TextView(const char*, int)'
1135 | inline constexpr TextView::TextView(const char *ptr, int n)
noexcept
| ^~~~~~~~
../lib/swoc/include/swoc/TextView.h:1131:20: note: candidate 2: 'constexpr
swoc::_1_5_15::TextView::TextView(const char*, size_t)'
1131 | inline constexpr TextView::TextView(const char *ptr, size_t n)
noexcept
| ^~~~~~~~
../lib/swoc/unit_tests/test_MemArena.cc:46:43: note: initializing argument 2
of 'swoc::_1_5_15::TextView {anonymous}::localize(swoc::_1_5_15::MemArena&,
const swoc::_1_5_15::TextView&)'
46 | localize(MemArena &arena, TextView const &view) {
| ~~~~~~~~~~~~~~~~^~~~
../lib/swoc/unit_tests/test_MemArena.cc:350:15: error: conversion from
'<brace-enclosed initializer list>' to 'const swoc::_1_5_15::TextView' is
ambiguous
350 | localize(*arena, {buffer, n});
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
../lib/swoc/unit_tests/test_MemArena.cc:350:15: note: there are 2 candidates
../lib/swoc/include/swoc/TextView.h:1135:20: note: candidate 1: 'constexpr
swoc::_1_5_15::TextView::TextView(const char*, int)'
1135 | inline constexpr TextView::TextView(const char *ptr, int n)
noexcept
| ^~~~~~~~
../lib/swoc/include/swoc/TextView.h:1131:20: note: candidate 2: 'constexpr
swoc::_1_5_15::TextView::TextView(const char*, size_t)'
1131 | inline constexpr TextView::TextView(const char *ptr, size_t n)
noexcept
| ^~~~~~~~
../lib/swoc/unit_tests/test_MemArena.cc:46:43: note: initializing argument 2
of 'swoc::_1_5_15::TextView {anonymous}::localize(swoc::_1_5_15::MemArena&,
const swoc::_1_5_15::TextView&)'
46 | localize(MemArena &arena, TextView const &view) {
| ~~~~~~~~~~~~~~~~^~~~
../lib/swoc/unit_tests/test_MemArena.cc:365:15: error: conversion from
'<brace-enclosed initializer list>' to 'const swoc::_1_5_15::TextView' is
ambiguous
365 | localize(*arena, {buffer, n});
| ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
../lib/swoc/unit_tests/test_MemArena.cc:365:15: note: there are 2 candidates
../lib/swoc/include/swoc/TextView.h:1135:20: note: candidate 1: 'constexpr
swoc::_1_5_15::TextView::TextView(const char*, int)'
1135 | inline constexpr TextView::TextView(const char *ptr, int n)
noexcept
| ^~~~~~~~
../lib/swoc/include/swoc/TextView.h:1131:20: note: candidate 2: 'constexpr
swoc::_1_5_15::TextView::TextView(const char*, size_t)'
1131 | inline constexpr TextView::TextView(const char *ptr, size_t n)
noexcept
| ^~~~~~~~
../lib/swoc/unit_tests/test_MemArena.cc:46:43: note: initializing argument 2
of 'swoc::_1_5_15::TextView {anonymous}::localize(swoc::_1_5_15::MemArena&,
const swoc::_1_5_15::TextView&)'
46 | localize(MemArena &arena, TextView const &view) {
| ~~~~~~~~~~~~~~~~^~~~
../lib/swoc/unit_tests/test_MemArena.cc: At global scope:
../lib/swoc/unit_tests/test_MemArena.cc:46:1: error:
'swoc::_1_5_15::TextView {anonymous}::localize(swoc::_1_5_15::MemArena&, const
swoc::_1_5_15::TextView&)' defined but not used [-Werror=unused-function]
46 | localize(MemArena &arena, TextView const &view) {
| ^~~~~~~~
cc1plus: all warnings being treated as errors
[646/1599] /usr/sbin/ccache /usr/sbin/c++ -DDEBUG -DOPENSSL_API_COMPAT=10002
-DOPENSSL_IS_OPENSSL3 -DPACKAGE_NAME="\"Apache Traffic Server\""
-DPACKAGE_VERSION=\"11.0.0\" -D_DEBUG -Dlinux
-I/home/jenkins/workspace/Github_Builds/autest/src/include
-I/home/jenkins/workspace/Github_Builds/autest/src/build/include
-I/home/jenkins/workspace/Github_Builds/autest/src/lib/swoc/include
-I/home/jenkins/workspace/Github_Builds/autest/src/lib/Catch2/src/catch2/..
-I/home/jenkins/workspace/Github_Builds/autest/src/build/lib/Catch2/generated-includes
-pthread -g -std=c++17 -DENABLE_SYSTEMTAP_PROBES -Wno-invalid-offsetof
-Wno-shadow -Wall -Wextra -Werror -Wno-unused-parameter -Wno-format-truncation
-Wno-unused-variable -Wno-error=parentheses -Werror -MD -MT
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/test_TextView.cc.o -MF
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/test_TextView.cc.o.d -o
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/test_TextView.cc.o -c
/home/jenkins/workspace/Githu
b_Builds/autest/src/lib/swoc/unit_tests/test_TextView.cc
FAILED: lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/test_TextView.cc.o
/usr/sbin/ccache /usr/sbin/c++ -DDEBUG -DOPENSSL_API_COMPAT=10002
-DOPENSSL_IS_OPENSSL3 -DPACKAGE_NAME="\"Apache Traffic Server\""
-DPACKAGE_VERSION=\"11.0.0\" -D_DEBUG -Dlinux
-I/home/jenkins/workspace/Github_Builds/autest/src/include
-I/home/jenkins/workspace/Github_Builds/autest/src/build/include
-I/home/jenkins/workspace/Github_Builds/autest/src/lib/swoc/include
-I/home/jenkins/workspace/Github_Builds/autest/src/lib/Catch2/src/catch2/..
-I/home/jenkins/workspace/Github_Builds/autest/src/build/lib/Catch2/generated-includes
-pthread -g -std=c++17 -DENABLE_SYSTEMTAP_PROBES -Wno-invalid-offsetof
-Wno-shadow -Wall -Wextra -Werror -Wno-unused-parameter -Wno-format-truncation
-Wno-unused-variable -Wno-error=parentheses -Werror -MD -MT
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/test_TextView.cc.o -MF
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/test_TextView.cc.o.d -o
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/test_TextView.cc.o -c
/home/jenkins/workspace/Github_Builds/au
test/src/lib/swoc/unit_tests/test_TextView.cc
../lib/swoc/unit_tests/test_TextView.cc: In function 'void
CATCH2_INTERNAL_TEST_0()':
../lib/swoc/unit_tests/test_TextView.cc:31:29: error: call of overloaded
'TextView(<brace-enclosed initializer list>)' is ambiguous
31 | TextView u{base.data(), ux};
| ^
../lib/swoc/unit_tests/test_TextView.cc:31:29: note: there are 2 candidates
In file included from ../lib/swoc/unit_tests/test_TextView.cc:16:
../lib/swoc/include/swoc/TextView.h:1135:20: note: candidate 1: 'constexpr
swoc::_1_5_15::TextView::TextView(const char*, int)'
1135 | inline constexpr TextView::TextView(const char *ptr, int n)
noexcept
| ^~~~~~~~
../lib/swoc/include/swoc/TextView.h:1131:20: note: candidate 2: 'constexpr
swoc::_1_5_15::TextView::TextView(const char*, size_t)'
1131 | inline constexpr TextView::TextView(const char *ptr, size_t n)
noexcept
| ^~~~~~~~
[647/1599] /usr/sbin/ccache /usr/sbin/c++ -DDEBUG -DOPENSSL_API_COMPAT=10002
-DOPENSSL_IS_OPENSSL3 -DPACKAGE_NAME="\"Apache Traffic Server\""
-DPACKAGE_VERSION=\"11.0.0\" -D_DEBUG -Dlinux -Dtsapi_EXPORTS
-I/home/jenkins/workspace/Github_Builds/autest/src/include
-I/home/jenkins/workspace/Github_Builds/autest/src/build/include
-I/home/jenkins/workspace/Github_Builds/autest/src/lib/swoc/include
-I/home/jenkins/workspace/Github_Builds/autest/src/lib/yamlcpp/include -isystem
/opt/openssl-quic/include -pthread -g -std=c++20 -fPIC
-DENABLE_SYSTEMTAP_PROBES -Wno-invalid-offsetof -pipe -Wall -Wextra
-Wno-noexcept-type -Wsuggest-override -Wno-vla-extension -fno-strict-aliasing
-Wno-format-truncation -Werror -MD -MT
src/api/CMakeFiles/tsapi.dir/InkAPITest.cc.o -MF
src/api/CMakeFiles/tsapi.dir/InkAPITest.cc.o.d -o
src/api/CMakeFiles/tsapi.dir/InkAPITest.cc.o -c
/home/jenkins/workspace/Github_Builds/autest/src/src/api/InkAPITest.cc
[648/1599] /usr/sbin/ccache /usr/sbin/c++ -DDEBUG -DOPENSSL_API_COMPAT=10002
-DOPENSSL_IS_OPENSSL3 -DPACKAGE_NAME="\"Apache Traffic Server\""
-DPACKAGE_VERSION=\"11.0.0\" -D_DEBUG -Dlinux
-I/home/jenkins/workspace/Github_Builds/autest/src/include
-I/home/jenkins/workspace/Github_Builds/autest/src/build/include
-I/home/jenkins/workspace/Github_Builds/autest/src/lib/swoc/include
-I/home/jenkins/workspace/Github_Builds/autest/src/lib/Catch2/src/catch2/..
-I/home/jenkins/workspace/Github_Builds/autest/src/build/lib/Catch2/generated-includes
-pthread -g -std=c++17 -DENABLE_SYSTEMTAP_PROBES -Wno-invalid-offsetof
-Wno-shadow -Wall -Wextra -Werror -Wno-unused-parameter -Wno-format-truncation
-Wno-unused-variable -Wno-error=parentheses -Werror -MD -MT
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/ex_bw_format.cc.o -MF
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/ex_bw_format.cc.o.d -o
lib/swoc/unit_tests/CMakeFiles/test_libswoc.dir/ex_bw_format.cc.o -c
/home/jenkins/workspace/Github_B
uilds/autest/src/lib/swoc/unit_tests/ex_bw_format.cc
ninja: build stopped: subcommand failed.
```
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