Daniel Black added a comment - 2021-03-27 02:47 Failed to reproduce on intel clang compiler: 2021.1.2 clang compiler $ mysql-test/mtr --mem main.type_float Logging: /home/dan/repos/mariadb-server-10.2/mysql-test/mysql-test-run.pl --mem main.type_float vardir: /home/dan/repos/build-mariadb-server-10.2-intelonapi/mysql-test/var Checking leftover processes... Removing old var directory... Creating var directory '/home/dan/repos/build-mariadb-server-10.2-intelonapi/mysql-test/var'... - symlinking 'var' to '/dev/shm/var_auto_nYO4' Checking supported features... MariaDB Version 10.2.38-MariaDB - SSL connections supported - binaries built with wsrep patch Collecting tests... Installing system database...   ==============================================================================   TEST RESULT TIME (ms) or COMMENT --------------------------------------------------------------------------   worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 16000..16019 main.type_float [ pass ] 104 -------------------------------------------------------------------------- The servers were restarted 0 times Spent 0.104 of 5 seconds executing testcases   Completed: All 1 tests were successful.     ~/repos/build-mariadb-server-10.2-intelonapi $ grep CMAKE_C CMakeCache.txt //Choose the type of build, options are: None(CMAKE_CXX_FLAGS or // CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel CMAKE_CXX_COMPILER:STRING=/opt/intel/oneapi/compiler/2021.1.2/linux/bin/clang++ CMAKE_CXX_COMPILER_AR:FILEPATH=/opt/intel/oneapi/compiler/2021.1.2/linux/bin/llvm-ar CMAKE_CXX_COMPILER_RANLIB:FILEPATH=/opt/intel/oneapi/compiler/2021.1.2/linux/bin/llvm-ranlib CMAKE_CXX_FLAGS:STRING= CMAKE_CXX_FLAGS_DEBUG:STRING=-g CMAKE_CXX_FLAGS_MINSIZEREL:STRING=-Os -DNDEBUG CMAKE_CXX_FLAGS_RELEASE:STRING=-O2 -DNDEBUG CMAKE_CXX_FLAGS_RELWITHDEBINFO:STRING=-O2 -g -DNDEBUG CMAKE_C_COMPILER:STRING=/opt/intel/oneapi/compiler/2021.1.2/linux/bin/clang CMAKE_C_COMPILER_AR:FILEPATH=/opt/intel/oneapi/compiler/2021.1.2/linux/bin/llvm-ar CMAKE_C_COMPILER_RANLIB:FILEPATH=/opt/intel/oneapi/compiler/2021.1.2/linux/bin/llvm-ranlib Still on with classic: ~/repos/build-mariadb-server-10.2-intelonapi-classic $ cmake -DPLUGIN_{MROONGA,TOKUDB,OQGRAPH,ROCKSDB}=NO -DCMAKE_LINKER=/opt/intel/oneapi/compiler/2021.1.1/linux/bin/intel64/xild -DCMAKE_C_COMPILER=/opt/intel/oneapi/compiler/2021.1.1/linux/bin/intel64/icc -DCMAKE_CXX_COMPILER=/opt/intel/oneapi/compiler/2021.1.1/linux/bin/intel64/icpc ../mariadb-server-10.2   $ mysql-test/mtr --mem main.type_float Logging: /home/dan/repos/mariadb-server-10.2/mysql-test/mysql-test-run.pl --mem main.type_float vardir: /home/dan/repos/build-mariadb-server-10.2-intelonapi-classic/mysql-test/var Removing old var directory... Creating var directory '/home/dan/repos/build-mariadb-server-10.2-intelonapi-classic/mysql-test/var'... - symlinking 'var' to '/dev/shm/var_auto_pLfS' Checking supported features... MariaDB Version 10.2.38-MariaDB - SSL connections supported - binaries built with wsrep patch Collecting tests... Installing system database...   ==============================================================================   TEST RESULT TIME (ms) or COMMENT --------------------------------------------------------------------------   worker[1] Using MTR_BUILD_THREAD 300, with reserved ports 16000..16019 main.type_float [ fail ] Test ended at 2021-03-27 13:43:08   CURRENT_TEST: main.type_float --- /home/dan/repos/mariadb-server-10.2/mysql-test/r/type_float.result 2020-11-13 12:52:33.461439087 +1100 +++ /home/dan/repos/mariadb-server-10.2/mysql-test/r/type_float.reject 2021-03-27 13:43:07.922142008 +1100 @@ -264,7 +264,7 @@ drop table t1,t2,t3; select 1e-308, 1.00000001e-300, 100000000e-300; 1e-308 1.00000001e-300 100000000e-300 -1e-308 1.00000001e-300 1e-292 +0 1.00000001e-300 1e-292 select 10e307; 10e307 1e308   mysqltest: Result length mismatch   - saving '/home/dan/repos/build-mariadb-server-10.2-intelonapi-classic/mysql-test/var/log/main.type_float/' to '/home/dan/repos/build-mariadb-server-10.2-intelonapi-classic/mysql-test/var/log/main.type_float/' -------------------------------------------------------------------------- The servers were restarted 0 times Spent 0.000 of 5 seconds executing testcases   Failure: Failed 1/1 tests, 0.00% were successful.   Failing test(s): main.type_float   The log files in var/log may give you some hint of what went wrong.   If you want to report this error, please read first the documentation at http://dev.mysql.com/doc/mysql/en/mysql-test-suite.html   mysql-test-run: *** ERROR: there were failing test cases

Daniel Black added a comment - 2021-03-31 08:41 - edited icpc (ICC) 2021.1 Beta 20201112 2047 word1(&rv0)= 0; (gdb) n 2048 dval(&rv)*= dval(&rv0); (gdb) p rv0 $1 = {d = 1.2325951644078309e-32, L = {0, 961544192}} (gdb) p rv $2 = {d = 8.1129638414606674e-277, L = {3764888392, 110936921}} (gdb) n   Thread 6 "mysqld" hit Hardware watchpoint 2: rv   Old value = {d = 8.1129638414606674e-277, L = {3764888392, 110936921}} New value = {d = 0, L = {0, 0}} my_strtod_int (s00=0x7fffe000f561 "e-308", se=0x7ffff14606f8, error=0x7ffff1460700, buf=0x7ffff145f878 "\220\370E\361\377\177", buf_size=3680) at /home/dan/repos/mariadb-server-10.2/strings/dtoa.c:2059 compiler clang++-11.0 (gdb) n 2048 dval(&rv)*= dval(&rv0); (gdb) p rv0 $9 = {d = 1.2325951644078309e-32, L = {0, 961544192}} (gdb) p rv $10 = {d = 8.1129638414606674e-277, L = {3764888392, 110936921}} (gdb) n   Thread 6 "mysqld" hit Hardware watchpoint 2: rv   Old value = {d = 8.1129638414606674e-277, L = {3764888392, 110936921}} New value = {d = 9.9999999999999991e-309, L = {2014963922, 471254}} my_strtod_int (s00=0x7fffe0012909 "e-308", se=0x7ffff145b408, error=0x7ffff145b410, buf=0x7ffff145a500 "\030\245E\361\377\177", buf_size=3680) at /home/dan/repos/mariadb-server-10.2/strings/dtoa.c:2044 dval is a macro accessing the d member so the multiplication of these two doubles is different resulting in the test failure. Both of these where with -O0.