Re: [Haskell] ANNOUNCE: GHC version 7.8.3

Coming a bit late to the party, but I've just realized this when playing around with the platform release candidate: I've successfully built and installed the 2014 RC3 on x64 Ubuntu Linux 12.04 LTS using ghc-7.8.3-x86_64-unknown-linux-centos65.tar.bz2 from the GHC download page. But somehow loading compiled code into ghci doesn't work, ghci always uses interpreted code. To verify this I've followed the simple example at http://www.haskell.org/ghc/docs/7.8.3/html/users_guide/ghci-compiled.html: ------------------------------------------------------------------------------------------------- svenpanne@svenpanne:~/ghci-test$ ll total 16 -rw-r----- 1 svenpanne eng 33 Aug 5 13:01 A.hs -rw-r----- 1 svenpanne eng 24 Aug 5 13:02 B.hs -rw-r----- 1 svenpanne eng 24 Aug 5 13:02 C.hs -rw-r----- 1 svenpanne eng 15 Aug 5 13:02 D.hs svenpanne@svenpanne:~/ghci-test$ more *.hs :::::::::::::: A.hs :::::::::::::: module A where import B import C :::::::::::::: B.hs :::::::::::::: module B where import D :::::::::::::: C.hs :::::::::::::: module C where import D :::::::::::::: D.hs :::::::::::::: module D where svenpanne@svenpanne:~/ghci-test$ ghci-7.6.3 GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Prelude> :! ghc-7.6.3 -c D.hs Prelude> :load A [2 of 4] Compiling C ( C.hs, interpreted ) [3 of 4] Compiling B ( B.hs, interpreted ) [4 of 4] Compiling A ( A.hs, interpreted ) Ok, modules loaded: D, C, A, B. *A> :show modules D ( D.hs, D.o ) C ( C.hs, interpreted ) A ( A.hs, interpreted ) B ( B.hs, interpreted ) *A> Leaving GHCi. svenpanne@svenpanne:~/ghci-test$ rm *.hi *.o svenpanne@svenpanne:~/ghci-test$ ghci-7.8.3 GHCi, version 7.8.3: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Prelude> :! ghc-7.8.3 -c D.hs Prelude> :load A [1 of 4] Compiling D ( D.hs, interpreted ) [2 of 4] Compiling C ( C.hs, interpreted ) [3 of 4] Compiling B ( B.hs, interpreted ) [4 of 4] Compiling A ( A.hs, interpreted ) Ok, modules loaded: D, C, A, B. *A> :show modules D ( D.hs, interpreted ) C ( C.hs, interpreted ) A ( A.hs, interpreted ) B ( B.hs, interpreted ) *A> Leaving GHCi. ------------------------------------------------------------------------------------------------- Using strace showed that ghci-7.8.3 reads D.hs twice (huh?) and D.hi once, but only "stat"s D.o (never reads its contents): ------------------------------------------------------------------------------------------------- [...] 12124 stat("D.hs", {st_mode=S_IFREG|0640, st_size=15, ...}) = 0 12124 stat("./D.hs", {st_mode=S_IFREG|0640, st_size=15, ...}) = 0 12124 open("./D.hs", O_RDONLY|O_NOCTTY|O_NONBLOCK) = 11 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=15, ...}) = 0 12124 ioctl(11, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff90c12938) = -1 ENOTTY (Inappropriate ioctl for device) 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=15, ...}) = 0 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=15, ...}) = 0 12124 lseek(11, 0, SEEK_CUR) = 0 12124 read(11, "module D where\n", 8096) = 15 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=15, ...}) = 0 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=15, ...}) = 0 12124 lseek(11, 0, SEEK_CUR) = 15 12124 close(11) = 0 12124 open("./D.hs", O_RDONLY|O_NOCTTY|O_NONBLOCK) = 11 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=15, ...}) = 0 12124 ioctl(11, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff90c12938) = -1 ENOTTY (Inappropriate ioctl for device) 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=15, ...}) = 0 12124 read(11, "module D where\n", 8096) = 15 12124 close(11) = 0 12124 stat("./D.o", {st_mode=S_IFREG|0640, st_size=933, ...}) = 0 12124 stat("Prelude.hs", 0x7f28b26e2b30) = -1 ENOENT (No such file or directory) 12124 stat("Prelude.lhs", 0x7f28b26e2cd0) = -1 ENOENT (No such file or directory) 12124 stat("B.hs", {st_mode=S_IFREG|0640, st_size=24, ...}) = 0 12124 stat("./B.hs", {st_mode=S_IFREG|0640, st_size=24, ...}) = 0 12124 open("./B.hs", O_RDONLY|O_NOCTTY|O_NONBLOCK) = 11 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=24, ...}) = 0 12124 ioctl(11, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff90c12938) = -1 ENOTTY (Inappropriate ioctl for device) 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=24, ...}) = 0 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=24, ...}) = 0 12124 lseek(11, 0, SEEK_CUR) = 0 12124 read(11, "module B where\nimport D\n", 8096) = 24 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=24, ...}) = 0 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=24, ...}) = 0 12124 lseek(11, 0, SEEK_CUR) = 24 12124 close(11) = 0 12124 open("./B.hs", O_RDONLY|O_NOCTTY|O_NONBLOCK) = 11 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=24, ...}) = 0 12124 ioctl(11, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff90c12938) = -1 ENOTTY (Inappropriate ioctl for device) 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=24, ...}) = 0 12124 read(11, "module B where\nimport D\n", 8096) = 24 12124 close(11) = 0 12124 stat("./B.o", 0x7f28b26fa780) = -1 ENOENT (No such file or directory) 12124 stat("Prelude.hs", 0x7f28b26fa900) = -1 ENOENT (No such file or directory) 12124 stat("Prelude.lhs", 0x7f28b26faaa0) = -1 ENOENT (No such file or directory) 12124 mkdir("/tmp/ghc12124_0", 0777) = 0 12124 stat("/tmp/ghc12124_0/ghc12124_1.o", 0x7f28b26facf0) = -1 ENOENT (No such file or directory) 12124 open("./D.hi", O_RDONLY|O_NOCTTY|O_NONBLOCK) = 11 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=500, ...}) = 0 12124 ioctl(11, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff90c12938) = -1 ENOTTY (Inappropriate ioctl for device) 12124 fstat(11, {st_mode=S_IFREG|0640, st_size=500, ...}) = 0 12124 read(11, "\1\372\316d\0\0\0\0\0\0\0\0\4\0"..., 8096) = 500 12124 close(11) = 0 12124 select(2, [], [1], NULL, {0, 0}) = 1 (out [1], left {0, 0}) 12124 write(1, "[1 of 4] Compiling D ( D.hs, interpreted )\n", 58) = 58 [...] ------------------------------------------------------------------------------------------------- This looks wrong to me. Did I miss something and/or did something stupid? Known bug?