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Date: Tue, 22 Apr 2008 17:05:21 -0700 (PDT)
From: "Martin Sebor (JIRA)" <jira@apache.org>
To: issues@stdcxx.apache.org
Subject: [jira] Commented: (STDCXX-754) [HP aCC 6.16] Potential null pointer
 dereference in cmdopt.cpp
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    [ https://issues.apache.org/jira/browse/STDCXX-754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12591485#action_12591485 ] 

Martin Sebor commented on STDCXX-754:
-------------------------------------

[r650698|http://svn.apache.org/viewvc?rev=650698&view=rev] gets rid of one bogus warning only to replace it with another. The compiler now spits out the diagnostics below. Warning #4276 is caused by the compiler bug in STDCXX-889 and the new warning #20200 by the one in STDCXX-764.
{noformat}
aCC -c  -D_RWSTDDEBUG   -mt -I/amd/devco/sebor/stdcxx-4.2.x/include -I/build/sebor/stdcxx-4.2.x-aCC-6.16-15D//include -I/amd/devco/sebor/stdcxx-4.2.x/tests/include  -AA  -g +d  +DD64 +w +W392,655,684,818,819,849 +W2193,2236,2261,2340,2401,2487 +W4227,4229,4231,4235,4237,4249 +W4255,4272,4284,4285,4286,4296,4297 +W3348   /amd/devco/sebor/stdcxx-4.2.x/tests/src/cmdopt.cpp
"/amd/devco/sebor/stdcxx-4.2.x/tests/src/cmdopt.cpp", line 167: warning #4276-D: 
          relational operator "<" always evaluates to 'false'
                 _RWSTD_INT_MIN < opt->minval_
                                ^

"/amd/devco/sebor/stdcxx-4.2.x/tests/src/cmdopt.cpp", line 181: warning #4276-D: 
          relational operator "<" always evaluates to 'false'
              if (_RWSTD_INT_MIN < opt->minval_)
                                 ^

"/amd/devco/sebor/stdcxx-4.2.x/tests/src/cmdopt.cpp", line 756: warning #4276-D: 
          relational operator "<" always evaluates to 'false'
                  && (   _RWSTD_INT_MIN < optspec->minval_
                                        ^

"/amd/devco/sebor/stdcxx-4.2.x/tests/src/cmdopt.cpp", line 1133: remark #4315-D: 
          while loop without body, did you insert an extra ';'?
                  while (isspace (*++s));
                                        ^

"/amd/devco/sebor/stdcxx-4.2.x/tests/src/cmdopt.cpp", line 513, procedure rw_vsetopts: warning #20200-D: 
          Potential null pointer dereference through end is detected (null
          definition:/amd/devco/sebor/stdcxx-4.2.x/tests/src/cmdopt.cpp, line
          506)
{noformat}

> [HP aCC 6.16] Potential null pointer dereference in cmdopt.cpp
> --------------------------------------------------------------
>
>                 Key: STDCXX-754
>                 URL: https://issues.apache.org/jira/browse/STDCXX-754
>             Project: C++ Standard Library
>          Issue Type: Sub-task
>          Components: Test Driver
>    Affects Versions: 4.2.0
>         Environment: $ uname -sr && aCC -V
> HP-UX B.11.31
> aCC: HP C/aC++ B3910B A.06.16 [Nov 26 2007]
>            Reporter: Scott (Yu) Zhong
>            Assignee: Martin Sebor
>             Fix For: 4.2.1
>
>   Original Estimate: 2h
>  Remaining Estimate: 2h
>
> aCC -c    -mt -I/amd/devco/scottz/stdcxx/4.2.x/include -I/build/scottz/12d/include -I/amd/devco/scottz/stdcxx/4.2.x/tests/include  -AA  +O2  +DD64
>  +w +W392 +W655 +W684 +W818 +W819 +W849 +W2193 +W2236 +W2261 +W2340 +W2401 +W2487 +W4227 +W4229 +W4231 +W4235 +W4237 +W4249 +W4255 +W4272 +W4284 +
> W4285 +W4286   /amd/devco/scottz/stdcxx/4.2.x/tests/src/cmdopt.cpp
> "/amd/devco/scottz/stdcxx/4.2.x/tests/src/cmdopt.cpp", line 537, procedure rw_vsetopts: warning #20200-D: Potential null pointer dereference through next is detected (null definition:/amd/devco/scottz/stdcxx/4.2.x/tests/src/cmdopt.cpp, line 506)

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