November 2013 - ghc-tickets

[GHC] #8568: internal error: allocation of ... bytes too large
by GHC 21 Nov '14

21 Nov '14

#8568: internal error: allocation of ... bytes too large ------------------------------------+------------------------------------- Reporter: mojojojo | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- Running the following GHCi session: {{{ import GHC.DataSize import qualified Data.HashTable.IO as HT import Control.Monad t <- HT.new :: IO (HT.BasicHashTable Int Char) forM_ [0..100000] $ \i -> HT.insert t i 'a' recursiveSize t }}} results in the following error: {{{ <interactive>: internal error: allocation of 1208480 bytes too large (GHC should have complained at compile-time) (GHC version 7.6.3 for x86_64_apple_darwin) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Abort trap: 6 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8568> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8149: GHC should warn about redundant import of a type name also if one of its record selectors is imported
by GHC 21 Nov '14

21 Nov '14

#8149: GHC should warn about redundant import of a type name also if one of its record selectors is imported ------------------------------------+------------------------------------- Reporter: Lemming | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- Sorry, I have another corner case for a redundant import warning: {{{ module Main where import Control.Monad.Trans.Writer (WriterT, runWriterT) main :: IO () main = undefined runWriterT }}} This module will not provoke a warning, although the import of WriterT can be omitted. I assume this is because runWriterT is a record selector of WriterT and could (or should?) be imported as: {{{ import Control.Monad.Trans.Writer (WriterT(runWriterT)) }}} Since I used runWriterT like a regular function I did not care about its record selector feature. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8149> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8094: Intermittent segfault when using ghc-7.6.3 -e on OSX 10.6.8
by GHC 20 Nov '14

20 Nov '14

#8094: Intermittent segfault when using ghc-7.6.3 -e on OSX 10.6.8 ----------------------------------+---------------------------------- Reporter: rampion | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: MacOS X Architecture: x86_64 (amd64) | Type of failure: Runtime crash Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ----------------------------------+---------------------------------- This error was observed using the 64-bit version of ghc-7.6.3 packaged with the Haskell Platform 2013.2.0.0 for OSX. Running commands with `ghc -e` sometimes produces a segfault. {{{ % ghc -e 'return ()' ; echo $? 0 % ghc -e 'return ()' ; echo $? zsh: segmentation fault ghc -e 'return ()' 139 }}} I don't know exactly what's causing it, but I'm suspicious of the binary distributed with the package. When I pull it up in `gdb`, there are warnings pertaining to missing object files expected to be in a `/Users/ian` directory. There's never been an `ian` user on my machine, so I suspect that's an artifact from whomever built the binary. This may also be the root of the intermittent segfault {{{ % cd /Library/Frameworks/GHC.framework/Versions/7.6.3-x86_64/usr/lib/ghc-7.6.3 % gdb ghc GNU gdb 6.3.50-20050815 (Apple version gdb-1518) (Sat Feb 12 02:52:12 UTC 2011) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "x86_64-apple-darwin"...Reading symbols for shared libraries .... done warning: Could not find object file "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(darwin64.o)" - no debug information available for "/var/folders/9z/yntzqjqn1j95xbpb6dr3qbww0000gn/T//ccr2b8iU.s". warning: Could not find object file "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(ffi64.o)" - no debug information available for "../src/x86/ffi64.c". warning: Could not find object file "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(prep_cif.o)" - no debug information available for "../src/prep_cif.c". warning: Could not find object file "/Users/ian/zz64/ghc-7.6.3/rts/dist/build/libHSrts_thr.a(types.o)" - no debug information available for "../src/types.c". (gdb) run -B. -e 'return ()' Starting program: /Library/Frameworks/GHC.framework/Versions/7.6.3-x86_64/usr/lib/ghc-7.6.3/ghc -B. -e 'return ()' Reading symbols for shared libraries + done Program exited normally. (gdb) run -B. -e 'return ()' Starting program: /Library/Frameworks/GHC.framework/Versions/7.6.3-x86_64/usr/lib/ghc-7.6.3/ghc -B. -e 'return ()' Reading symbols for shared libraries + done Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_INVALID_ADDRESS at address: 0x00000000f34ed440 0x00000001f34d659a in evacuate1 () (gdb) where #0 0x00000001f34d659a in evacuate1 () #1 0x00000001f34dc1b8 in scavenge_block1 () Previous frame inner to this frame (gdb could not unwind past this frame) (gdb) kill Kill the program being debugged? (y or n) y error while killing target (killing anyway): assertion failure on line 300 of "/SourceCache/gdb/gdb-1518/src/gdb/macosx/macosx-nat-inferior-util.c" in function "macosx_inferior_suspend_ptrace": status.value.sig == TARGET_SIGNAL_STOP warning: error on line 2182 of "/SourceCache/gdb/gdb-1518/src/gdb/macosx /macosx-nat-inferior.c" in function "macosx_kill_inferior_safe": (os/kern) failure (0x5x) (gdb) run -B. -e '()' Starting program: /Library/Frameworks/GHC.framework/Versions/7.6.3-x86_64/usr/lib/ghc-7.6.3/ghc -B. -e '()' Reading symbols for shared libraries + done () Program exited normally. (gdb) run -B. -e '()' Starting program: /Library/Frameworks/GHC.framework/Versions/7.6.3-x86_64/usr/lib/ghc-7.6.3/ghc -B. -e '()' Reading symbols for shared libraries + done Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_INVALID_ADDRESS at address: 0x00000000d1916440 [Switching to process 18462 thread 0x2003] 0x00000001d191bc44 in stg_ap_v_fast () (gdb) where #0 0x00000001d191bc44 in stg_ap_v_fast () #1 0x0000000000000000 in ?? () (gdb) }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8094> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8068: ghc incorrectly accepts the Kannada TTHA character at the beginning of an identifier.
by GHC 20 Nov '14

20 Nov '14

#8068: ghc incorrectly accepts the Kannada TTHA character at the beginning of an identifier. ------------------------------------+------------------------------------- Reporter: malcolmw | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- The code at http://hub.darcs.net/lelf/acme- lookofdisapproval/browse/Acme/LookOfDisapproval.lhs is accepted by ghc, but technically, the leading letter of the funny identifier (Kannada TTHA) is neither lowercase, uppercase, nor titlecase. It can be accepted in any position of an identifier except the first, where Haskell requires the character to be either upper/title-case (conid) or lower (varid). isLetter x && not (isUpper x) does not imply isLower(x). -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8068> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8093: Runtime Internal Error with setNumCapabilities 1
by GHC 20 Nov '14

20 Nov '14

#8093: Runtime Internal Error with setNumCapabilities 1 ----------------------------------+---------------------------------- Reporter: guest | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Runtime System | Version: 7.6.3 Keywords: | Operating System: MacOS X Architecture: x86 | Type of failure: Runtime crash Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ----------------------------------+---------------------------------- On the HP 2013.2.0.0 on OS X 10.6, a program running a worker thread started with ForkIO and communicating over MVars crashes on exit with this error message: out: internal error: stg_ap_p_ret (GHC version 7.6.3 for i386_apple_darwin) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Only with setNumCapabilities 1, though. Works fine with the systems actual core count (>1). -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8093> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8102: Parallel build of HEAD consistently fails
by GHC 20 Nov '14

20 Nov '14

#8102: Parallel build of HEAD consistently fails ------------------------------------+------------------------------------- Reporter: edsko | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Build System | Version: 7.7 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- A parallel build (with make -j2 or higher) consistently fails for me at {{{ libtool: link: ln mpn/remove.o .libs/libgmp.lax/lt104-remove.o || cp mpn/remove.o .libs/libgmp.lax/lt104-remove.o libtool: link: /usr/bin/ar cq .libs/libgmp.a assert.o compat.o errno.o extract-dbl.o invalid.o memory.o mp_bpl.o mp_clz_tab.o mp_dv_tab.o mp_minv_tab.o mp_get_fns.o mp_set_fns.o rand.o randclr.o randdef.o randiset.o randlc2s.o randlc2x.o randmt.o randmts.o rands.o randsd.o randsdui.o randbui.o randmui.o version.o nextprime.o tal-reent.o mpf/init.o mpf/init2.o mpf/inits.o mpf/set.o mpf/set_ui.o mpf/set_si.o mpf/set_str.o mpf/set_d.o mpf/set_z.o mpf/iset.o mpf/iset_ui.o mpf/iset_si.o mpf/iset_str.o mpf/iset_d.o mpf/clear.o mpf/clears.o mpf/get_str.o mpf/dump.o mpf/size.o mpf/eq.o mpf/reldiff.o mpf/sqrt.o mpf/random2.o mpf/inp_str.o mpf/out_str.o mpf/add.o mpf/add_ui.o mpf/sub.o mpf/sub_ui.o mpf/ui_sub.o mpf/mul.o mpf/mul_ui.o mpf/div.o mpf/div_ui.o mpf/cmp.o mpf/cmp_d.o mpf/cmp_ui.o mpf/cmp_si.o mpf/mul_2exp.o mpf/div_2exp.o mpf/abs.o mpf/neg.o mpf/set_q.o mpf/get_d.o mpf/get_d_2exp.o mpf/set_dfl_prec.o mpf/set_prc.o mpf/set_prc_raw.o mpf/get_dfl_prec.o mpf/get_prc.o mpf/ui_div.o mpf/sqrt_ui.o mpf/ceilfloor.o mpf/trunc.o mpf/pow_ui.o mpf/urandomb.o mpf/swap.o mpf/fits_sint.o mpf/fits_slong.o mpf/fits_sshort.o mpf/fits_uint.o mpf/fits_ulong.o mpf/fits_ushort.o mpf/get_si.o mpf/get_ui.o mpf/int_p.o .libs/libgmp.lax/lt1-abs.o .libs/libgmp.lax/lt2-add.o .libs/libgmp.lax/lt3-add_ui.o mpz/aorsmul.o mpz/aorsmul_i.o mpz/and.o mpz/array_init.o mpz/bin_ui.o mpz/bin_uiui.o mpz/cdiv_q.o mpz/cdiv_q_ui.o mpz/cdiv_qr.o mpz/cdiv_qr_ui.o mpz/cdiv_r.o mpz/cdiv_r_ui.o mpz/cdiv_ui.o mpz/cfdiv_q_2exp.o mpz/cfdiv_r_2exp.o .libs/libgmp.lax/lt4-clear.o .libs/libgmp.lax/lt5-clears.o mpz/clrbit.o .libs/libgmp.lax/lt6-cmp.o .libs/libgmp.lax/lt7-cmp_d.o .libs/libgmp.lax/lt8-cmp_si.o .libs/libgmp.lax/lt9-cmp_ui.o mpz/cmpabs.o mpz/cmpabs_d.o mpz/cmpabs_ui.o mpz/com.o mpz/combit.o mpz/cong.o mpz/cong_2exp.o mpz/cong_ui.o mpz/divexact.o mpz/divegcd.o mpz/dive_ui.o mpz/divis.o mpz/divis_ui.o mpz/divis_2exp.o .libs/libgmp.lax/lt10-dump.o mpz/export.o mpz/fac_ui.o mpz/fdiv_q.o mpz/fdiv_q_ui.o mpz/fdiv_qr.o mpz/fdiv_qr_ui.o mpz/fdiv_r.o mpz/fdiv_r_ui.o mpz/fdiv_ui.o mpz/fib_ui.o mpz/fib2_ui.o .libs/libgmp.lax/lt11-fits_sint.o .libs/libgmp.lax/lt12-fits_slong.o .libs/libgmp.lax/lt13-fits_sshort.o .libs/libgmp.lax/lt14-fits_uint.o .libs/libgmp.lax/lt15-fits_ulong.o .libs/libgmp.lax/lt16-fits_ushort.o mpz/gcd.o mpz/gcd_ui.o mpz/gcdext.o .libs/libgmp.lax/lt17-get_d.o .libs/libgmp.lax/lt18-get_d_2exp.o .libs/libgmp.lax/lt19-get_si.o .libs/libgmp.lax/lt20-get_str.o .libs/libgmp.lax/lt21-get_ui.o mpz/getlimbn.o mpz/hamdist.o mpz/import.o .libs/libgmp.lax/lt22-init.o .libs/libgmp.lax/lt23-init2.o .libs/libgmp.lax/lt24-inits.o mpz/inp_raw.o .libs/libgmp.lax/lt25-inp_str.o mpz/invert.o mpz/ior.o .libs/libgmp.lax/lt26-iset.o .libs/libgmp.lax/lt27-iset_d.o .libs/libgmp.lax/lt28-iset_si.o .libs/libgmp.lax/lt29-iset_str.o .libs/libgmp.lax/lt30-iset_ui.o mpz/jacobi.o mpz/kronsz.o mpz/kronuz.o mpz/kronzs.o mpz/kronzu.o mpz/lcm.o mpz/lcm_ui.o mpz/lucnum_ui.o mpz/lucnum2_ui.o mpz/millerrabin.o mpz/mod.o .libs/libgmp.lax/lt31-mul.o .libs/libgmp.lax/lt32-mul_2exp.o mpz/mul_si.o .libs/libgmp.lax/lt33-mul_ui.o mpz/n_pow_ui.o .libs/libgmp.lax/lt34-neg.o .libs/libgmp.lax/lt35-nextprime.o mpz/out_raw.o .libs/libgmp.lax/lt36-out_str.o mpz/perfpow.o mpz/perfsqr.o mpz/popcount.o .libs/libgmp.lax/lt37-pow_ui.o mpz/powm.o mpz/powm_sec.o mpz/powm_ui.o mpz/pprime_p.o mpz/random.o .libs/libgmp.lax/lt38-random2.o mpz/realloc.o mpz/realloc2.o mpz/remove.o mpz/root.o mpz/rootrem.o mpz/rrandomb.o mpz/scan0.o mpz/scan1.o .libs/libgmp.lax/lt39-set.o .libs/libgmp.lax/lt40-set_d.o mpz/set_f.o .libs/libgmp.lax/lt41-set_q.o .libs/libgmp.lax/lt42-set_si.o .libs/libgmp.lax/lt43-set_str.o .libs/libgmp.lax/lt44-set_ui.o mpz/setbit.o .libs/libgmp.lax/lt45-size.o mpz/sizeinbase.o .libs/libgmp.lax/lt46-sqrt.o mpz/sqrtrem.o .libs/libgmp.lax/lt47-sub.o .libs/libgmp.lax/lt48-sub_ui.o .libs/libgmp.lax/lt49-swap.o mpz/tdiv_ui.o mpz/tdiv_q.o mpz/tdiv_q_2exp.o mpz/tdiv_q_ui.o mpz/tdiv_qr.o mpz/tdiv_qr_ui.o mpz/tdiv_r.o mpz/tdiv_r_2exp.o mpz/tdiv_r_ui.o mpz/tstbit.o mpz/ui_pow_ui.o .libs/libgmp.lax/lt50-ui_sub.o .libs/libgmp.lax/lt51-urandomb.o mpz/urandomm.o mpz/xor.o .libs/libgmp.lax/lt52-abs.o mpq/aors.o mpq/canonicalize.o .libs/libgmp.lax/lt53-clear.o .libs/libgmp.lax/lt54-clears.o .libs/libgmp.lax/lt55-cmp.o .libs/libgmp.lax/lt56-cmp_si.o .libs/libgmp.lax/lt57-cmp_ui.o .libs/libgmp.lax/lt58-div.o .libs/libgmp.lax/lt59-get_d.o mpq/get_den.o mpq/get_num.o .libs/libgmp.lax/lt60-get_str.o .libs/libgmp.lax/lt61-init.o .libs/libgmp.lax/lt62-inits.o .libs/libgmp.lax/lt63-inp_str.o mpq/inv.o mpq/md_2exp.o .libs/libgmp.lax/lt64-mul.o .libs/libgmp.lax/lt65-neg.o .libs/libgmp.lax/lt66-out_str.o .libs/libgmp.lax/lt67-set.o mpq/set_den.o mpq/set_num.o .libs/libgmp.lax/lt68-set_si.o .libs/libgmp.lax/lt69-set_str.o .libs/libgmp.lax/lt70-set_ui.o mpq/equal.o .libs/libgmp.lax/lt71-set_z.o .libs/libgmp.lax/lt72-set_d.o .libs/libgmp.lax/lt73-set_f.o .libs/libgmp.lax/lt74-swap.o mpn/fib_table.o mpn/mp_bases.o .libs/libgmp.lax/lt75-add.o mpn/add_1.o mpn/add_n.o .libs/libgmp.lax/lt76-sub.o mpn/sub_1.o mpn/sub_n.o .libs/libgmp.lax/lt77-neg.o .libs/libgmp.lax/lt78-com.o mpn/mul_1.o mpn/addmul_1.o mpn/submul_1.o mpn/lshift.o mpn/rshift.o mpn/dive_1.o mpn/diveby3.o .libs/libgmp.lax/lt79-divis.o mpn/divrem.o mpn/divrem_1.o mpn/divrem_2.o .libs/libgmp.lax/lt80-fib2_ui.o mpn/mod_1.o mpn/mod_34lsub1.o mpn/mode1o.o mpn/pre_mod_1.o .libs/libgmp.lax/lt81-dump.o mpn/mod_1_1.o mpn/mod_1_2.o mpn/mod_1_3.o mpn/mod_1_4.o mpn/lshiftc.o .libs/libgmp.lax/lt82-mul.o mpn/mul_fft.o mpn/mul_n.o mpn/sqr.o mpn/mul_basecase.o mpn/sqr_basecase.o mpn/nussbaumer_mul.o .libs/libgmp.lax/lt83-random.o .libs/libgmp.lax/lt84-random2.o mpn/pow_1.o .libs/libgmp.lax/lt85-rootrem.o .libs/libgmp.lax/lt86-sqrtrem.o .libs/libgmp.lax/lt87-get_str.o .libs/libgmp.lax/lt88-set_str.o .libs/libgmp.lax/lt89-scan0.o .libs/libgmp.lax/lt90-scan1.o .libs/libgmp.lax/lt91-popcount.o .libs/libgmp.lax/lt92-hamdist.o .libs/libgmp.lax/lt93-cmp.o .libs/libgmp.lax/lt94-perfsqr.o .libs/libgmp.lax/lt95-perfpow.o mpn/gcd_1.o .libs/libgmp.lax/lt96-gcd.o mpn/gcdext_1.o .libs/libgmp.lax/lt97-gcdext.o mpn/gcd_lehmer.o mpn/gcd_subdiv_step.o mpn/gcdext_lehmer.o mpn/gcdext_subdiv_step.o mpn/div_q.o .libs/libgmp.lax/lt98-tdiv_qr.o mpn/jacbase.o .libs/libgmp.lax/lt99-get_d.o mpn/matrix22_mul.o mpn/hgcd2.o mpn/hgcd.o mpn/mullo_n.o mpn/mullo_basecase.o mpn/toom22_mul.o mpn/toom32_mul.o mpn/toom42_mul.o mpn/toom52_mul.o mpn/toom62_mul.o mpn/toom33_mul.o mpn/toom43_mul.o mpn/toom53_mul.o mpn/toom63_mul.o mpn/toom44_mul.o mpn/toom6h_mul.o mpn/toom6_sqr.o mpn/toom8h_mul.o mpn/toom8_sqr.o mpn/toom_couple_handling.o mpn/toom2_sqr.o mpn/toom3_sqr.o mpn/toom4_sqr.o mpn/toom_eval_dgr3_pm1.o mpn/toom_eval_dgr3_pm2.o mpn/toom_eval_pm1.o mpn/toom_eval_pm2.o mpn/toom_eval_pm2exp.o mpn/toom_eval_pm2rexp.o mpn/toom_interpolate_5pts.o mpn/toom_interpolate_6pts.o mpn/toom_interpolate_7pts.o mpn/toom_interpolate_8pts.o mpn/toom_interpolate_12pts.o mpn/toom_interpolate_16pts.o mpn/invertappr.o .libs/libgmp.lax/lt100-invert.o mpn/binvert.o mpn/mulmod_bnm1.o mpn/sqrmod_bnm1.o mpn/sbpi1_div_q.o mpn/sbpi1_div_qr.o mpn/sbpi1_divappr_q.o mpn/dcpi1_div_q.o mpn/dcpi1_div_qr.o mpn/dcpi1_divappr_q.o mpn/mu_div_qr.o mpn/mu_divappr_q.o mpn/mu_div_q.o mpn/bdiv_q_1.o mpn/sbpi1_bdiv_q.o mpn/sbpi1_bdiv_qr.o mpn/dcpi1_bdiv_q.o mpn/dcpi1_bdiv_qr.o mpn/mu_bdiv_q.o mpn/mu_bdiv_qr.o mpn/bdiv_q.o mpn/bdiv_qr.o .libs/libgmp.lax/lt101-divexact.o mpn/bdiv_dbm1c.o mpn/redc_1.o mpn/redc_2.o mpn/redc_n.o .libs/libgmp.lax/lt102-powm.o mpn/powlo.o .libs/libgmp.lax/lt103-powm_sec.o mpn/subcnd_n.o mpn/redc_1_sec.o mpn/trialdiv.o .libs/libgmp.lax/lt104-remove.o mpn/and_n.o mpn/andn_n.o mpn/nand_n.o mpn/ior_n.o mpn/iorn_n.o mpn/nior_n.o mpn/xor_n.o mpn/xnor_n.o mpn/copyi.o mpn/copyd.o mpn/zero.o mpn/invert_limb.o mpn/mul_2.o mpn/addmul_2.o mpn/addlsh1_n.o mpn/sublsh1_n.o mpn/rsblsh1_n.o mpn/rsh1add_n.o mpn/rsh1sub_n.o mpn/addlsh2_n.o mpn/rsblsh2_n.o mpn/addlsh_n.o mpn/rsblsh_n.o mpn/addaddmul_1msb0.o printf/asprintf.o printf/asprntffuns.o printf/doprnt.o printf/doprntf.o printf/doprnti.o printf/fprintf.o printf/obprintf.o printf/obvprintf.o printf/obprntffuns.o printf/printf.o printf/printffuns.o printf/snprintf.o printf/snprntffuns.o printf/sprintf.o printf/sprintffuns.o printf/vasprintf.o printf/vfprintf.o printf/vprintf.o printf/vsnprintf.o printf/vsprintf.o printf/repl- vsnprintf.o scanf/doscan.o scanf/fscanf.o scanf/fscanffuns.o scanf/scanf.o scanf/sscanf.o scanf/sscanffuns.o scanf/vfscanf.o scanf/vscanf.o scanf/vsscanf.o /usr/bin/ranlib: file: .libs/libgmp.a(mp_clz_tab.o) has no symbols /usr/bin/ranlib: file: .libs/libgmp.a(obprintf.o) has no symbols /usr/bin/ranlib: file: .libs/libgmp.a(obvprintf.o) has no symbols /usr/bin/ranlib: file: .libs/libgmp.a(obprntffuns.o) has no symbols /usr/bin/ranlib: file: .libs/libgmp.a(repl-vsnprintf.o) has no symbols libtool: link: ranlib .libs/libgmp.a ranlib: file: .libs/libgmp.a(mp_clz_tab.o) has no symbols ranlib: file: .libs/libgmp.a(obprintf.o) has no symbols ranlib: file: .libs/libgmp.a(obvprintf.o) has no symbols ranlib: file: .libs/libgmp.a(obprntffuns.o) has no symbols ranlib: file: .libs/libgmp.a(repl-vsnprintf.o) has no symbols libtool: link: rm -fr .libs/libgmp.lax libtool: link: ( cd ".libs" && rm -f "libgmp.la" && cp -p "../libgmp.la" "libgmp.la" ) cp libraries/integer-gmp/gmp/gmpbuild/gmp.h libraries/integer-gmp/gmp/ cp libraries/integer-gmp/gmp/gmpbuild/.libs/libgmp.a libraries/integer- gmp/gmp/ inplace/bin/mkdirhier libraries/integer-gmp/gmp/objs cd libraries/integer-gmp/gmp/objs && /usr/bin/ar x ../libgmp.a ranlib libraries/integer-gmp/gmp/libgmp.a ranlib: file: libraries/integer-gmp/gmp/libgmp.a(mp_clz_tab.o) has no symbols ranlib: file: libraries/integer-gmp/gmp/libgmp.a(obprintf.o) has no symbols ranlib: file: libraries/integer-gmp/gmp/libgmp.a(obvprintf.o) has no symbols ranlib: file: libraries/integer-gmp/gmp/libgmp.a(obprntffuns.o) has no symbols ranlib: file: libraries/integer-gmp/gmp/libgmp.a(repl-vsnprintf.o) has no symbols make: *** [all] Error 2 }}} I can continue the build without problems at tihs point by simply calling "make -j2" again, at which point it continues with {{{ ===--- building phase 0 make -r --no-print-directory -f ghc.mk phase=0 phase_0_builds make[1]: Nothing to be done for `phase_0_builds'. ===--- building phase 1 make -r --no-print-directory -f ghc.mk phase=1 phase_1_builds make[1]: Nothing to be done for `phase_1_builds'. ===--- building final phase make -r --no-print-directory -f ghc.mk phase=final all rts/ghc.mk:510: rts/dist/build/.depend-v-dyn-l-debug-thr-thr_debug-thr_l- debug_dyn-thr_dyn-thr_debug_dyn-l_dyn-thr_l_dyn.c_asm: No such file or directory libraries/old-time/ghc.mk:5: libraries/old-time/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/old-time/ghc.mk:5: libraries/old-time/dist- install/build/.depend-v-dyn.c_asm: No such file or directory libraries/haskell98/ghc.mk:5: libraries/haskell98/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/haskell98/ghc.mk:5: libraries/haskell98/dist- install/build/.depend-v-dyn.c_asm: No such file or directory libraries/haskell2010/ghc.mk:5: libraries/haskell2010/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/haskell2010/ghc.mk:5: libraries/haskell2010/dist- install/build/.depend-v-dyn.c_asm: No such file or directory libraries/random/ghc.mk:5: libraries/random/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/random/ghc.mk:5: libraries/random/dist- install/build/.depend-v-dyn.c_asm: No such file or directory libraries/primitive/ghc.mk:5: libraries/primitive/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/primitive/ghc.mk:5: libraries/primitive/dist- install/build/.depend-v-dyn.c_asm: No such file or directory libraries/vector/ghc.mk:5: libraries/vector/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/vector/ghc.mk:5: libraries/vector/dist- install/build/.depend-v-dyn.c_asm: No such file or directory libraries/dph/dph-base/ghc.mk:5: libraries/dph/dph-base/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/dph/dph-base/ghc.mk:5: libraries/dph/dph-base/dist- install/build/.depend-v-dyn.c_asm: No such file or directory libraries/dph/dph-prim-interface/ghc.mk:5: libraries/dph/dph-prim- interface/dist-install/build/.depend-v-dyn.haskell: No such file or directory libraries/dph/dph-prim-interface/ghc.mk:5: libraries/dph/dph-prim- interface/dist-install/build/.depend-v-dyn.c_asm: No such file or directory libraries/dph/dph-prim-seq/ghc.mk:5: libraries/dph/dph-prim-seq/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/dph/dph-prim-seq/ghc.mk:5: libraries/dph/dph-prim-seq/dist- install/build/.depend-v-dyn.c_asm: No such file or directory libraries/dph/dph-prim-par/ghc.mk:5: libraries/dph/dph-prim-par/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/dph/dph-prim-par/ghc.mk:5: libraries/dph/dph-prim-par/dist- install/build/.depend-v-dyn.c_asm: No such file or directory libraries/dph/dph-lifted-base/ghc.mk:5: libraries/dph/dph-lifted-base /dist-install/build/.depend-v-dyn.haskell: No such file or directory libraries/dph/dph-lifted-base/ghc.mk:5: libraries/dph/dph-lifted-base /dist-install/build/.depend-v-dyn.c_asm: No such file or directory libraries/dph/dph-lifted-boxed/ghc.mk:5: libraries/dph/dph-lifted-boxed /dist-install/build/.depend-v-dyn.haskell: No such file or directory libraries/dph/dph-lifted-boxed/ghc.mk:5: libraries/dph/dph-lifted-boxed /dist-install/build/.depend-v-dyn.c_asm: No such file or directory libraries/dph/dph-lifted-copy/ghc.mk:5: libraries/dph/dph-lifted-copy /dist-install/build/.depend-v-dyn.haskell: No such file or directory libraries/dph/dph-lifted-copy/ghc.mk:5: libraries/dph/dph-lifted-copy /dist-install/build/.depend-v-dyn.c_asm: No such file or directory libraries/dph/dph-lifted-vseg/ghc.mk:5: libraries/dph/dph-lifted-vseg /dist-install/build/.depend-v-dyn.haskell: No such file or directory libraries/dph/dph-lifted-vseg/ghc.mk:5: libraries/dph/dph-lifted-vseg /dist-install/build/.depend-v-dyn.c_asm: No such file or directory libraries/ghc-prim/ghc.mk:4: libraries/ghc-prim/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/ghc-prim/ghc.mk:4: libraries/ghc-prim/dist- install/build/.depend-v-dyn.c_asm: No such file or directory libraries/integer-gmp/ghc.mk:4: libraries/integer-gmp/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/integer-gmp/ghc.mk:4: libraries/integer-gmp/dist- install/build/.depend-v-dyn.c_asm: No such file or directory libraries/base/ghc.mk:4: libraries/base/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/unix/ghc.mk:4: libraries/unix/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/hpc/ghc.mk:4: libraries/hpc/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/haskeline/ghc.mk:4: libraries/haskeline/dist- install/build/.depend-v-dyn.haskell: No such file or directory libraries/integer-gmp/mkGmpDerivedConstants/ghc.mk:20: libraries/integer- gmp/mkGmpDerivedConstants/dist/build/.depend.c_asm: No such file or directory compiler/ghc.mk:442: compiler/stage2/build/.depend-v-dyn.haskell: No such file or directory utils/hpc/ghc.mk:18: utils/hpc/dist-install/build/.depend.haskell: No such file or directory utils/runghc/ghc.mk:28: utils/runghc/dist-install/build/.depend.haskell: No such file or directory ghc/ghc.mk:115: ghc/stage2/build/.depend.haskell: No such file or directory "rm" -f ghc/stage2/build/.depend.haskell.tmp "rm" -f utils/runghc/dist-install/build/.depend.haskell.tmp "rm" -f utils/hpc/dist-install/build/.depend.haskell.tmp "inplace/bin/ghc-stage1" -M -fPIC -dynamic -H64m -O0 -fasm -hide-all- packages -i -iutils/runghc/. -iutils/runghc/dist-install/build -iutils/runghc/dist-install/build/autogen -Iutils/runghc/dist- install/build -Iutils/runghc/dist-install/build/autogen -optP-include -optPutils/runghc/dist-install/build/autogen/cabal_macros.h -package base-4.7.0.0 -package directory-1.2.0.1 -package filepath-1.3.0.2 -package process-1.2.0.0 -XHaskell98 -no-user-package-db -rtsopts -cpp -DVERSION="\"7.7.20130728\"" -odir utils/runghc/dist-install/build -hidir utils/runghc/dist-install/build -stubdir utils/runghc/dist- install/build -dep-makefile utils/runghc/dist- install/build/.depend.haskell.tmp -dep-suffix "dyn_" -include-pkg-deps utils/runghc/dist-install/build/Main.hs }}} and so on and then continues to completion. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8102> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8174: GHC should not load packages for TH if they are not used
by GHC 20 Nov '14

20 Nov '14

#8174: GHC should not load packages for TH if they are not used -------------------------+------------------------------------------------- Reporter: nh2 | Owner: Type: bug | Status: new Priority: | Milestone: 7.8.1 normal | Version: 7.6.3 Component: | Operating System: Unknown/Multiple Compiler | Type of failure: Compile-time performance bug Keywords: | Test Case: Architecture: | Blocking: Unknown/Multiple | Difficulty: | Unknown | Blocked By: | Related Tickets: | -------------------------+------------------------------------------------- https://github.com/nh2/ghc-bug-th-loading When you call {{{ ghc --make -package mypackage }}} on a module that uses TH, you will see {{{ Loading package mypackage-1.2.3.4 ... linking ... done. }}} even if no code uses it. This slows down builds, especially cabal ones. GHCI does this better and only loads what is needed. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8174> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8310: Can we change the semantics of `Trustworthy`?
by GHC 19 Nov '14

19 Nov '14

#8310: Can we change the semantics of `Trustworthy`? ------------------------------------+------------------------------------- Reporter: ekmett | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- I would like to propose that if I put `{-# LANGUAGE Trustworthy #-}` on a module and it infers as Safe, then the module should get marked `Safe` instead of `Trustworthy`. Putting `Trustworthy` in right now has the semantics "it is at most `Trustworthy`". It would be far more useful to have the semantics "it is at least `Trustworthy`". The current situation is actually a maintenance nightmare. Currently, if I incur a dependency on a package has some `Safe` versions and some non-Safe versions, but I know I'm not using any unsafe componentry of it, I have to either a.) Mark my package Trustworthy unnecessarily enlarging the trusted code base a lot. b.) Track ALL of the dependencies of my dependencies to know when it will be Safe rather than Trustworthy, then insert brittle CPP pragmas that often fail. Consider that `hashable` 1.2.1.0 recently became flagged `Trustworthy`, but was previously not. Now, if I want to properly infer as `Safe`, I have to track the exact version of `hashable` I depend on _and_ whether or not my `Typeable` instance is being rolled manually and make an enormous composite `#ifdef` at the top of the module. Worse, we got the patch in about a month ago, so to future proof my code I'd have had to be psychic. Now consider that I have 50 other packages to maintain in this same manner. I wind up shotgunning `Trustworthy`, do deal with the fact that I deigned to provide instances for `vector`. If `vector` ever refactored to support Safe Haskell, I'd have to go fix up 50 very arcane CPP pragmas to match the internal details of an external package. Then I wind up checking them by round tripping through cabal installs and checking my haddocks. This is further complicated by the fact that some things are just becoming Safe "for free" as they go, due to the fact that they no longer need or can supply hand-rolled `Typeable` instances. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8310> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8354: Add INLINE (or at least INLINABLE) pragmas for methods of Ord in ghc-prim
by GHC 19 Nov '14

19 Nov '14

#8354: Add INLINE (or at least INLINABLE) pragmas for methods of Ord in ghc-prim -------------------------------------+------------------------------------- Reporter: guest | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: libraries (other) | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- Self-explanatory. Eq already has INLINE on (==) and (/=), and it'd be nice to have it on Ord so that SPECIALIZE pragmas on its methods in user code can fire. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8354> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 5

[GHC] #8311: suboptimal code generated for even :: Int -> Bool by NCG (x86, x86_64)
by GHC 19 Nov '14

19 Nov '14

#8311: suboptimal code generated for even :: Int -> Bool by NCG (x86, x86_64) ------------------------------------+------------------------------------- Reporter: rwbarton | Owner: Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler (NCG) | Version: 7.7 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- This appears to be the x86 assembly for a specialization for `even :: Int -> Bool` that's produced by a SPECIALISE pragma for `(^) :: Int -> Int -> Int` in GHC.Real. The relevant bit is offsets `0x2c` through `0x3b`. {{{ 0000000c <base_GHCziReal_evenzuzdseven1_info>: c: 8b 45 00 mov 0x0(%ebp),%eax f: c7 45 00 2c 00 00 00 movl $0x2c,0x0(%ebp) 12: R_386_32 .text 16: 89 c6 mov %eax,%esi 18: f7 c6 03 00 00 00 test $0x3,%esi 1e: 75 0c jne 2c <c8gO_info> 20: ff 26 jmp *(%esi) 22: 66 90 xchg %ax,%ax 24: 00 00 add %al,(%eax) 26: 00 00 add %al,(%eax) 28: 20 00 and %al,(%eax) ... 0000002c <c8gO_info>: 2c: b8 02 00 00 00 mov $0x2,%eax 31: 89 c1 mov %eax,%ecx 33: 8b 46 03 mov 0x3(%esi),%eax 36: 99 cltd 37: f7 f9 idiv %ecx 39: 85 d2 test %edx,%edx 3b: 75 0b jne 48 <c8gO_info+0x1c> 3d: be 02 00 00 00 mov $0x2,%esi 3e: R_386_32 ghczmprim_GHCziTypes_True_closure 42: 83 c5 04 add $0x4,%ebp 45: ff 65 00 jmp *0x0(%ebp) 48: be 01 00 00 00 mov $0x1,%esi 49: R_386_32 ghczmprim_GHCziTypes_False_closure 4d: 83 c5 04 add $0x4,%ebp 50: ff 65 00 jmp *0x0(%ebp) }}} It would be much better to do a simple `testb $0x1,0x3(%esi)` in place of the first six instructions of `c8gO_info`. The NCG generates similar code on x86_64. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8311> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 6