https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69573
--- Comment #14 from Chen Gang <gang.chen.5i5j at gmail dot com> --- (In reply to Martin Sebor from comment #2) > Patch posted for review: > https://gcc.gnu.org/ml/gcc-patches/2016-01/msg02372.html For your original patch, my test result is below (only compare 5 result files, because of "make check" fails), I am not quite sure whether it is OK, please check, thanks. ShengShiZhuChengdeMacBook-Pro:gcc sszc$ sudo ./contrib/compare_tests ../build-gcc ../build-gcc-new Password: # Comparing directories ## Dir1=../build-gcc: 5 sum files ## Dir2=../build-gcc-new: 5 sum files # Comparing 5 common sum files ## /bin/sh ./contrib/compare_tests /tmp/gxx-sum1.388 /tmp/gxx-sum2.388 Tests that now fail, but worked before: c-c++-common/asan/halt_on_error-1.c -O0 execution test c-c++-common/asan/halt_on_error-1.c -O1 execution test c-c++-common/asan/halt_on_error-1.c -O2 execution test c-c++-common/asan/halt_on_error-1.c -O3 -g execution test c-c++-common/asan/halt_on_error-1.c -Os execution test c-c++-common/asan/strncpy-overflow-1.c -O0 execution test gcc.dg/pch/save-temps-1.c -O0 -g -I. -Dwith_PCH (test for excess errors) Tests that now work, but didn't before: c-c++-common/asan/halt_on_error-1.c -O0 execution test c-c++-common/asan/halt_on_error-1.c -O1 execution test c-c++-common/asan/halt_on_error-1.c -O2 execution test c-c++-common/asan/halt_on_error-1.c -O3 -g execution test c-c++-common/asan/halt_on_error-1.c -Os execution test c-c++-common/asan/strncpy-overflow-1.c -O0 execution test New tests that FAIL: gcc.dg/pch/save-temps-1.c -O0 -g assembly comparison New tests that PASS: gcc.dg/pr61053.c (test for errors, line 80) gcc.dg/pr61053.c (test for errors, line 81) gcc.dg/pr61053.c (test for errors, line 82) gcc.dg/pr61053.c (test for errors, line 83) gcc.dg/pr61053.c (test for errors, line 84) Old tests that passed, that have disappeared: (Eeek!) gcc.dg/pch/save-temps-1.c -O0 -g -I. -Dwithout_PCH (test for excess errors) gcc.dg/pch/save-temps-1.c -O0 -g assembly comparison gcc.dg/pr61053.c (test for errors, line 70) gcc.dg/pr61053.c (test for errors, line 71) gcc.dg/pr61053.c (test for errors, line 72) gcc.dg/pr61053.c (test for errors, line 73) gcc.dg/pr61053.c (test for errors, line 74) ## Differences found: # 1 differences in 5 common sum files found 5 result files are (which should be enough for us, I guess): ShengShiZhuChengdeMacBook-Pro:build-gcc sszc$ sudo find ./ | grep "\.sum$" .//gcc/testsuite/g++/g++.sum .//gcc/testsuite/gcc/gcc.sum .//gcc/testsuite/gfortran/gfortran.sum .//gcc/testsuite/objc/objc.sum .//x86_64-apple-darwin14.4.0/libstdc++-v3/testsuite/libstdc++.sum "make check" fails information (I guess, it should be easy to be fixed): /Applications/Xcode-2.app/Contents/Developer/usr/bin/make all-am true DO=all multi-do # /Applications/Xcode-2.app/Contents/Developer/usr/bin/make /Applications/Xcode-2.app/Contents/Developer/usr/bin/make btest stest /Users/sszc/Desktop/build-gcc/./gcc/xgcc -B/Users/sszc/Desktop/build-gcc/./gcc/ -B/usr/local/x86_64-apple-darwin14.4.0/bin/ -B/usr/local/x86_64-apple-darwin14.4.0/lib/ -isystem /usr/local/x86_64-apple-darwin14.4.0/include -isystem /usr/local/x86_64-apple-darwin14.4.0/sys-include -DHAVE_CONFIG_H -I. -I../../../gcc/libbacktrace -I ../../../gcc/libbacktrace/../include -I ../../../gcc/libbacktrace/../libgcc -I ../libgcc -funwind-tables -frandom-seed=btest-btest.o -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute -Wcast-qual -Werror -g -O -g -O2 -c -o btest-btest.o `test -f 'btest.c' || echo '../../../gcc/libbacktrace/'`btest.c ../../../gcc/libbacktrace/btest.c:624:1: error: ‘test5’ defined but not used [-Werror=unused-function] test5 (void) ^~~~~ cc1: all warnings being treated as errors make[3]: *** [btest-btest.o] Error 1 make[2]: *** [check-am] Error 2 make[1]: *** [check-target-libbacktrace] Error 2 make: *** [do-check] Error 2
