From sacadmin Tue Aug 21 14:28:30 2007 Received: from sfbaymail2sca.sfbay.sun.com (sfbaymail2sca [129.145.155.42]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id l7LLSU6L014792 for ; Tue, 21 Aug 2007 14:28:30 -0700 (PDT) Received: from sca-es-mail-1.sun.com (sca-es-mail-1.Sun.COM [192.18.43.132]) by sfbaymail2sca.sfbay.sun.com (8.13.6+Sun/8.12.10/ENSMAIL,v2.2) with ESMTP id l7LLPv38000107 for ; Tue, 21 Aug 2007 14:25:57 -0700 (PDT) Received: from fe-sfbay-09.sun.com ([192.18.43.129]) by sca-es-mail-1.sun.com (8.13.7+Sun/8.12.9) with ESMTP id l7LLPqdm001964 for ; Tue, 21 Aug 2007 14:25:52 -0700 (PDT) Received: from conversion-daemon.fe-sfbay-09.sun.com by fe-sfbay-09.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) id <0JN500C01777QY00@fe-sfbay-09.sun.com> (original mail from John.Plocher@Sun.COM) for psarc-record@sac.sfbay.sun.com; Tue, 21 Aug 2007 14:25:52 -0700 (PDT) Received: from [129.146.58.87] by fe-sfbay-09.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) with ESMTPSA id <0JN50091R7IWF830@fe-sfbay-09.sun.com> for psarc-record@sac.sfbay.sun.com; Tue, 21 Aug 2007 14:25:45 -0700 (PDT) Date: Tue, 21 Aug 2007 14:25:39 -0700 From: John Plocher Subject: [Fwd: sacMaiL Error [PSARC]: 2007/474: new ldd(1) -w option] Sender: John.Plocher@Sun.COM To: psarc-record@sac.sfbay.sun.com Message-id: <46CB5853.4030900@Sun.Com> MIME-version: 1.0 Content-type: text/plain; format=flowed; charset=ISO-8859-1 Content-transfer-encoding: 7BIT User-Agent: Thunderbird 1.5.0.12 (Macintosh/20070509) Status: RO Content-Length: 5390 -------- Original Message -------- Subject: sacMaiL Error [PSARC]: 2007/474: new ldd(1) -w option Date: Tue, 21 Aug 2007 14:15:53 -0700 (PDT) From: Sac Administrator To: undisclosed-recipients: ; [This message was auto-generated by the SAC mail system] NOT SAVED: /export/sac/Archives/CaseLog/arc/PSARC/2007/474/mail This message was not saved in the project's mail log. This may be because of file permission problems: -rw-rw-r-- 1 rie staff 0 Aug 21 14:13 /export/sac/Archives/CaseLog/arc/PSARC/2007/474/mail Please contact SACAdmin@sac.sfbay about this problem. ---- original message follows ---- Date: Tue, 21 Aug 2007 14:10:35 -0700 From: Rod Evans To: psarc@sac.sfbay.sun.com Subject: 2007/474: new ldd(1) -w option Content-Type: text/plain; charset=ISO-8859-1; format=flowed I'm sponsoring the following case for myself. This case qualifies for Architectural self-review, but I wish to record the following information. ------------------------------------------------------------------------ 6594430/6595139 uncovered an issue where too many symbols had been reduced to locals within an application. This application, built with lex(1), should export a number of "yy*" interfaces so that libl.so can reference these entry points. However, the references in libl.so are all defined weak, and an unresolved weak reference results in no relocation error, and the value zero being written to the relocation offset. Bottom line, the lack of the required call back interfaces isn't being discovered by any tools we presently use to inspect binaries: oxpoly 432. ldd /usr/bin/genmsg libl.so.1 => /usr/lib/libl.so.1 libc.so.1 => /lib/libc.so.1 libm.so.2 => /lib/libm.so.2 /platform/SUNW,Sun-Blade-1000/lib/libc_psr.so.1 ------------------------------------------------------------------------ This fast track introduced a new, -w, option to ldd(1): User Commands ldd(1) SYNOPSIS ldd [-d | -r] [-c] [-e envar] [-f] [-i] [-L] [-l] [-s] [-U | -u] [-v] [-w] filename... | ... ldd can also check the compatibility of filename with the shared objects filename uses. With each of the following options, ldd prints warnings for any unresolved symbol references that would occur when filename is loaded. -d Check immediate references. -r Check both immediate references and lazy references. -w Check for any unresolved weak symbol references. | Only one of the options -d or -r can be specified during any single invocation of ldd. The -w option can be combined | with either the -d option or the -r option. | ... Symbols that are used by relocations may be defined as weak | references. By default, if a weak symbol reference can not | be resolved, the relocation is ignored and a zero written to | the relocation offset. The -w, when used with either the -d | or the -r options, causes any unresolved relocation against | a weak symbol reference to be flagged as a relocation error. | With this option we can now observe unresolved weak references: oxpoly 434. ldd -rw /usr/bin/genmsg libl.so.1 => /usr/lib/libl.so.1 libc.so.1 => /lib/libc.so.1 symbol not found: __1cG__CrunMdo_exit_code6F_v_ (/usr/bin/genmsg) /platform/SUNW,Sun-Blade-1000/lib/libc_psr.so.1 symbol not found: yyout (/usr/lib/libl.so.1) symbol not found: yyleng (/usr/lib/libl.so.1) symbol not found: yytext (/usr/lib/libl.so.1) symbol not found: yyfnd (/usr/lib/libl.so.1) symbol not found: yyprevious (/usr/lib/libl.so.1) symbol not found: yyextra (/usr/lib/libl.so.1) symbol not found: yylsp (/usr/lib/libl.so.1) symbol not found: yylstate (/usr/lib/libl.so.1) symbol not found: yyolsp (/usr/lib/libl.so.1) symbol not found: yywleng (/usr/lib/libl.so.1) symbol not found: yywtext (/usr/lib/libl.so.1) symbol not found: yylex (/usr/lib/libl.so.1) symbol not found: yyinput (/usr/lib/libl.so.1) symbol not found: yyunput (/usr/lib/libl.so.1) symbol not found: yyback (/usr/lib/libl.so.1) symbol not found: yywinput (/usr/lib/libl.so.1) symbol not found: yywunput (/usr/lib/libl.so.1) symbol not found: __tnf_probe_notify (/lib/libc.so.1) symbol not found: __tnf_probe_notify (/lib/libc.so.1) libm.so.2 => /lib/libm.so.2 Note, this option is also catching the weak reference of __Crun::do_exit_code() is the included crt, and thw two tnf references from libc. ----------------------------------------------------------------------- Release Binding: Patch/Micro ldd -w option Committed -- Rod. ---- end of original message ---- From Rod.Evans@sun.com Tue Aug 21 15:12:15 2007 Received: from jurassic-x4600.sfbay.sun.com (cretaceous [129.146.17.63]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id l7LMCFr3016796 for ; Tue, 21 Aug 2007 15:12:15 -0700 (PDT) Received: from [129.146.228.120] (chaz.SFBay.Sun.COM [129.146.228.120]) by jurassic-x4600.sfbay.sun.com (8.14.1+Sun/8.14.1) with ESMTP id l7LM9g7H108801 for ; Tue, 21 Aug 2007 15:09:42 -0700 (PDT) Message-ID: <46CB6203.5060001@sun.com> Date: Tue, 21 Aug 2007 15:06:59 -0700 From: Rod Evans Reply-To: Rod.Evans@sun.com Organization: Sun Microsystems Inc. User-Agent: Thunderbird 2.0.0.4 (X11/20070703) MIME-Version: 1.0 To: psarc-ext@sac.sfbay.sun.com Subject: 2007/474: new ldd(1) -w option Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Status: RO Content-Length: 4427 I'm sponsoring the following case for myself. This case qualifies for Architectural self-review, but I wish to record the following information. ------------------------------------------------------------------------ 6594430/6595139 uncovered an issue where too many symbols had been reduced to locals within an application. This application, built with lex(1), should export a number of "yy*" interfaces so that libl.so can reference these entry points. However, the references in libl.so are all defined weak, and an unresolved weak reference results in no relocation error, and the value zero being written to the relocation offset. Bottom line, the lack of the required call back interfaces isn't being discovered by any tools we presently use to inspect binaries: oxpoly 432. ldd /usr/bin/genmsg libl.so.1 => /usr/lib/libl.so.1 libc.so.1 => /lib/libc.so.1 libm.so.2 => /lib/libm.so.2 /platform/SUNW,Sun-Blade-1000/lib/libc_psr.so.1 ------------------------------------------------------------------------ This fast track introduced a new, -w, option to ldd(1): User Commands ldd(1) SYNOPSIS ldd [-d | -r] [-c] [-e envar] [-f] [-i] [-L] [-l] [-s] [-U | -u] [-v] [-w] filename... | ... ldd can also check the compatibility of filename with the shared objects filename uses. With each of the following options, ldd prints warnings for any unresolved symbol references that would occur when filename is loaded. -d Check immediate references. -r Check both immediate references and lazy references. -w Check for any unresolved weak symbol references. | Only one of the options -d or -r can be specified during any single invocation of ldd. The -w option can be combined | with either the -d option or the -r option. | ... Symbols that are used by relocations may be defined as weak | references. By default, if a weak symbol reference can not | be resolved, the relocation is ignored and a zero written to | the relocation offset. The -w, when used with either the -d | or the -r options, causes any unresolved relocation against | a weak symbol reference to be flagged as a relocation error. | With this option we can now observe unresolved weak references: oxpoly 434. ldd -rw /usr/bin/genmsg libl.so.1 => /usr/lib/libl.so.1 libc.so.1 => /lib/libc.so.1 symbol not found: __1cG__CrunMdo_exit_code6F_v_ (/usr/bin/genmsg) /platform/SUNW,Sun-Blade-1000/lib/libc_psr.so.1 symbol not found: yyout (/usr/lib/libl.so.1) symbol not found: yyleng (/usr/lib/libl.so.1) symbol not found: yytext (/usr/lib/libl.so.1) symbol not found: yyfnd (/usr/lib/libl.so.1) symbol not found: yyprevious (/usr/lib/libl.so.1) symbol not found: yyextra (/usr/lib/libl.so.1) symbol not found: yylsp (/usr/lib/libl.so.1) symbol not found: yylstate (/usr/lib/libl.so.1) symbol not found: yyolsp (/usr/lib/libl.so.1) symbol not found: yywleng (/usr/lib/libl.so.1) symbol not found: yywtext (/usr/lib/libl.so.1) symbol not found: yylex (/usr/lib/libl.so.1) symbol not found: yyinput (/usr/lib/libl.so.1) symbol not found: yyunput (/usr/lib/libl.so.1) symbol not found: yyback (/usr/lib/libl.so.1) symbol not found: yywinput (/usr/lib/libl.so.1) symbol not found: yywunput (/usr/lib/libl.so.1) symbol not found: __tnf_probe_notify (/lib/libc.so.1) symbol not found: __tnf_probe_notify (/lib/libc.so.1) libm.so.2 => /lib/libm.so.2 Note, this option is also catching the weak reference of __Crun::do_exit_code() is the included crt, and thw two tnf references from libc. ----------------------------------------------------------------------- Release Binding: Patch/Micro ldd -w option Committed -- Rod.