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* [Bug bootstrap/56198] New: [4.8 Regression] Go profiledbootstrap error @ 2013-02-04 7:42 jakub at gcc dot gnu.org 2013-02-04 7:43 ` [Bug bootstrap/56198] " jakub at gcc dot gnu.org ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: jakub at gcc dot gnu.org @ 2013-02-04 7:42 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56198 Bug #: 56198 Summary: [4.8 Regression] Go profiledbootstrap error Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassigned@gcc.gnu.org ReportedBy: jakub@gcc.gnu.org CC: ian@gcc.gnu.org My --enable-checking=release profiledbootstrap failed on an maybe uninitialized warning turned into -Werror in go/gofrontend/import-archive.cc. Archive_file::read_header has: off_t local_nested_off; if (!this->interpret_header(&hdr, off, pname, size, &local_nested_off)) return false; if (nested_off != NULL) *nested_off = local_nested_off; and the warning was complaining that local_nested_off might be uninitialized. If Archive_file::interpret_header is what is called here, then *nested_off might be indeed uninitialized even when the function returns true, in particular for: else if (hdr->ar_name[1] == ' ') { // This is the symbol table. pname->clear(); } else if (hdr->ar_name[1] == '/') { // This is the extended name table. pname->assign(1, '/'); } BTW, there seems to be also an inconsistency in that method, the first write to *nested_off in that method is not guarded by nested_off != NULL: *nested_off = 0; while the second one is: if (nested_off != NULL) *nested_off = y; ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug bootstrap/56198] [4.8 Regression] Go profiledbootstrap error 2013-02-04 7:42 [Bug bootstrap/56198] New: [4.8 Regression] Go profiledbootstrap error jakub at gcc dot gnu.org @ 2013-02-04 7:43 ` jakub at gcc dot gnu.org 2013-02-05 1:11 ` ian at gcc dot gnu.org 2013-02-05 1:13 ` ian at airs dot com 2 siblings, 0 replies; 4+ messages in thread From: jakub at gcc dot gnu.org @ 2013-02-04 7:43 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56198 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |4.8.0 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug bootstrap/56198] [4.8 Regression] Go profiledbootstrap error 2013-02-04 7:42 [Bug bootstrap/56198] New: [4.8 Regression] Go profiledbootstrap error jakub at gcc dot gnu.org 2013-02-04 7:43 ` [Bug bootstrap/56198] " jakub at gcc dot gnu.org @ 2013-02-05 1:11 ` ian at gcc dot gnu.org 2013-02-05 1:13 ` ian at airs dot com 2 siblings, 0 replies; 4+ messages in thread From: ian at gcc dot gnu.org @ 2013-02-05 1:11 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56198 --- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> 2013-02-05 01:11:05 UTC --- Author: ian Date: Tue Feb 5 01:11:01 2013 New Revision: 195747 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195747 Log: PR bootstrap/56198 compiler: Always initialize *nested_off in interpret_header. Modified: trunk/gcc/go/gofrontend/import-archive.cc ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug bootstrap/56198] [4.8 Regression] Go profiledbootstrap error 2013-02-04 7:42 [Bug bootstrap/56198] New: [4.8 Regression] Go profiledbootstrap error jakub at gcc dot gnu.org 2013-02-04 7:43 ` [Bug bootstrap/56198] " jakub at gcc dot gnu.org 2013-02-05 1:11 ` ian at gcc dot gnu.org @ 2013-02-05 1:13 ` ian at airs dot com 2 siblings, 0 replies; 4+ messages in thread From: ian at airs dot com @ 2013-02-05 1:13 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56198 Ian Lance Taylor <ian at airs dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED CC| |ian at airs dot com Resolution| |FIXED --- Comment #2 from Ian Lance Taylor <ian at airs dot com> 2013-02-05 01:12:45 UTC --- Fixed. Thanks. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-02-05 1:13 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-02-04 7:42 [Bug bootstrap/56198] New: [4.8 Regression] Go profiledbootstrap error jakub at gcc dot gnu.org 2013-02-04 7:43 ` [Bug bootstrap/56198] " jakub at gcc dot gnu.org 2013-02-05 1:11 ` ian at gcc dot gnu.org 2013-02-05 1:13 ` ian at airs dot com
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