unistr.cpp:1979:13: warning: 'void uprv_UnicodeStringDummy()' defined but not used [-Wunused-function]

[62f]

I would like to work on few of these.

Originally posted by @HarshithaKP in #18983 (comment)

bash-5.0# nvm install --latest-npm v14.10.1
Downloading and installing node v14.10.1...
Downloading https://nodejs.org/dist/v14.10.1/node-v14.10.1-linux-x86.tar.xz...
curl: (22) The requested URL returned error: 404

Binary download from https://nodejs.org/dist/v14.10.1/node-v14.10.1-linux-x86.tar.xz failed, trying source.
grep: /root/.nvm/.cache/bin/node-v14.10.1-linux-x86/node-v14.10.1-linux-x86.tar.xz: No such file or directory
Provided file to checksum does not exist.
Binary download failed, trying source.
Local cache found: $NVM_DIR/.cache/src/node-v14.10.1/node-v14.10.1.tar.xz
Computing checksum with sha256sum
Checksums do not match: 'ece5c5cdca866f147eaf24cab5159b4c72437e115cd46d3d528a6e998ff02965' found, '2b5382f99eda3e7bbb4431f9e70475bc379fc8f30301c36b5b8b9b3764ead5b7' expected.
Checksum check failed!
Removing the broken local cache...
Downloading https://nodejs.org/dist/v14.10.1/node-v14.10.1.tar.xz...
############################################################################### 100.0%
Computing checksum with sha256sum
Checksums matched!
$>./configure --prefix=/root/.nvm/versions/node/v14.10.1 <
Node.js configure: Found Python 3.8.5...
INFO: configure completed successfully
make -C out BUILDTYPE=Release V=0
touch /root/.nvm/.cache/src/node-v14.10.1/files/out/Release/obj.target/tools/icu/icu_implementation.stamp
touch /root/.nvm/.cache/src/node-v14.10.1/files/out/Release/obj.target/tools/icu/icu_uconfig.stamp
touch /root/.nvm/.cache/src/node-v14.10.1/files/out/Release/obj.target/tools/icu/icu_uconfig_target.stamp

g++ -o /root/.nvm/.cache/src/node-v14.10.1/files/out/Release/obj.target/icuucx/deps/icu-small/source/common/unistr.o ../deps/icu-small/source/common/unistr.cpp '-DV8_DEPRECATION_WARNINGS' '-DV8_IMMINENT_DEPRECATION_WARNINGS' '-D__STDC_FORMAT_MACROS' '-DOPENSSL_NO_PINSHARED' '-DOPENSSL_THREADS' '-DU_COMMON_IMPLEMENTATION=1' '-DU_ATTRIBUTE_DEPRECATED=' '-D_CRT_SECURE_NO_DEPRECATE=' '-DU_STATIC_IMPLEMENTATION=1' '-DUCONFIG_NO_SERVICE=1' '-DU_ENABLE_DYLOAD=0' '-DU_HAVE_STD_STRING=1' '-DUCONFIG_NO_BREAK_ITERATION=0' -I../deps/icu-small/source/common -pthread -Wall -Wextra -Wno-unused-parameter -m32 -Wno-deprecated-declarations -Wno-strict-aliasing -O3 -fno-omit-frame-pointer -fno-exceptions -std=gnu++1y -frtti -MMD -MF /root/.nvm/.cache/src/node-v14.10.1/files/out/Release/.deps//root/.nvm/.cache/src/node-v14.10.1/files/out/Release/obj.target/icuucx/deps/icu-small/source/common/unistr.o.d.raw -I/usr/bin/cc/include/c++/5.3.0: -c
../deps/icu-small/source/common/unistr.cpp:1979:13: warning: 'void uprv_UnicodeStringDummy()' defined but not used [-Wunused-function]
1979 | static void uprv_UnicodeStringDummy(void) {
| ^~~~~~~~~~~~~~~~~~~~~~~

[bnoordhuis]

Warnings emitted by files in deps/ are not really under our control, except by turning off the relevant warnings flags.

ICU in particular is not -Wall -Wextra clean. I'd love to see it cleaned up but patches should go upstream, not here.

[bnoordhuis]

Closing per my previous comment.