Launchpad has imported 8 comments from the remote bug at https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61033.
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Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2014-05-02T04:40:04+00:00 Michael Collison wrote: Created attachment 32722 Preprocssed file to reproduce bug Data flow analysis in variable tracking does not converge and causes an infinite loop with the attached file and following compile options: ./cc1plus -quiet -fpreprocessed qmltextgenerator.ii -dumpbase qmltextgenerator.ii -march=armv4t -mfloat-abi=soft -mtls-dialect=gnu -auxbase-strip x.o -g -O2 -Wformat=1 -Werror=format-security -Wall -Wextra -version -fstack-protector -fvisibility=hidden -fvisibility- inlines-hidden -fPIC --param ssp-buffer-size=4 -o qmltextgenerator.s GCC configured with --target=arm-linux-gnueabi Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.9/+bug/1352417/comments/0 ------------------------------------------------------------------------ On 2014-05-02T08:17:39+00:00 Ktkachov wrote: Confirmed with arm-none-eabi as well. Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.9/+bug/1352417/comments/1 ------------------------------------------------------------------------ On 2014-05-07T01:31:55+00:00 Mkuvyrkov wrote: Assigned to myself as Michael does not have a GCC developer account yet. Michael is the one working on this bug. Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.9/+bug/1352417/comments/2 ------------------------------------------------------------------------ On 2014-08-04T15:42:04+00:00 Ktkachov wrote: *** Bug 62013 has been marked as a duplicate of this bug. *** Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.9/+bug/1352417/comments/6 ------------------------------------------------------------------------ On 2014-08-04T15:45:17+00:00 Ktkachov wrote: Filling in some fields, this still fails on the 4.8 and 4.9 branches but works on trunk. Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.9/+bug/1352417/comments/7 ------------------------------------------------------------------------ On 2014-08-04T18:07:47+00:00 Cbaylis-u wrote: Created attachment 33244 Reduced test case $ arm-unknown-linux-gnueabihf-gcc -S -O2 -g reduced1.cpp Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.9/+bug/1352417/comments/8 ------------------------------------------------------------------------ On 2014-08-04T18:43:39+00:00 Cbaylis-u wrote: git bisect points to r211625 as the revision which fixes/hides this bug on trunk. 2014-06-13 Richard Biener <rguent...@suse.de> * tree-ssa-pre.c (eliminate_dom_walker::before_dom_children): Rewrite to propagate the VN result into all uses where possible and to remove stmts becoming dead because of that. (eliminate): Generalize stmt removal handling, remove in reverse dominator order to support proper debug stmt generation. Update stmts before removing stmts. * tree-ssa-propagate.c (propagate_tree_value): Remove bogus assert. Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.9/+bug/1352417/comments/9 ------------------------------------------------------------------------ On 2014-08-04T18:55:00+00:00 Michael Collison wrote: Charlie, I still feel that the var tracking pass should be able to protect itself from an infinite loop. On 8/4/2014 11:43 AM, cbaylis at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61033 > > --- Comment #6 from cbaylis at gcc dot gnu.org --- > > git bisect points to r211625 as the revision which fixes/hides this bug on > trunk. > > 2014-06-13 Richard Biener <rguent...@suse.de> > > * tree-ssa-pre.c (eliminate_dom_walker::before_dom_children): > Rewrite to propagate the VN result into all uses where > possible and to remove stmts becoming dead because of that. > (eliminate): Generalize stmt removal handling, remove in > reverse dominator order to support proper debug stmt > generation. Update stmts before removing stmts. > * tree-ssa-propagate.c (propagate_tree_value): Remove > bogus assert. > Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.9/+bug/1352417/comments/10 ** Changed in: gcc Status: Unknown => Confirmed ** Changed in: gcc Importance: Unknown => Medium -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gcc-4.8 in Ubuntu. https://bugs.launchpad.net/bugs/1352417 Title: [4.8/4.9 Regression] cc1plus doesn't terminate when called with -g on arm-linux-gnueabihf Status in The GNU Compiler Collection: Confirmed Status in “gcc-4.8” package in Ubuntu: New Status in “gcc-4.9” package in Ubuntu: New Status in “gcc-4.9” package in Debian: Confirmed Bug description: seen on the 4.8 and 4.9 branch, cc1plus doesn't terminate. omitting the -g lets the command succeed. $ g++ -v -std=c++0x -c -g -O2 qmltextgenerator.cpp Program received signal SIGINT, Interrupt. 0x0054920c in canonicalize_values_star(variable_def**, dataflow_set_def*) () (gdb) bt #0 0x0054920c in canonicalize_values_star(variable_def**, dataflow_set_def*) () #1 0x0054b0c2 in ?? () #2 0x0054ca08 in ?? () #3 0x0054d8ba in ?? () #4 0x0039928a in execute_one_pass(opt_pass*) () #5 0x00399448 in execute_pass_list(opt_pass*) () #6 0x00399452 in execute_pass_list(opt_pass*) () #7 0x00399452 in execute_pass_list(opt_pass*) () #8 0x00244a8c in ?? () #9 0x00245ca4 in compile() () #10 0x00246030 in finalize_compilation_unit() () #11 0x00158fc4 in cp_write_global_declarations() () #12 0x00409394 in ?? () #13 0x0040aad0 in toplev_main(int, char**) () #14 0xb6d4f630 in __libc_start_main (main=0x111e19 <main>, argc=26, argv=0xbefff604, init=<optimized out>, fini=0x7b2af5 <__libc_csu_fini>, rtld_fini=0xb6fe24e5 <_dl_fini>, stack_end=0xbefff604) at libc-start.c:287 #15 0x00112058 in _start () defaults are -march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16 -mthumb To manage notifications about this bug go to: https://bugs.launchpad.net/gcc/+bug/1352417/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
