[HP aCC 6.15] potential null dererefence and out of bound access in iso2022.cpp
-------------------------------------------------------------------------------
Key: STDCXX-730
URL: https://issues.apache.org/jira/browse/STDCXX-730
Project: C++ Standard Library
Issue Type: Sub-task
Components: 22. Localization
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: Martin Sebor
Assignee: Martin Sebor
Fix For: 4.2.1
We're getting a bunch of warnings from this file,. a couple of them looking
serious:
{noformat}
"$(TOPDIR)/src/iso2022.cpp", line 470: warning #4232-D: conversion from
"mbstate_t *" to a more strictly aligned type "unsigned short *" may cause
misaligned access
_RWSTD_REINTERPRET_CAST (ISO_2022_STATE_INDEX_T*, &state);
^
"$(TOPDIR)/include/loc/_localedef.h", line 160: remark #4298-D: 64 bit
migration: addition result could be truncated before cast to bigger sized type
return (wtolower_off - wtoupper_off) / sizeof (__rw_upper_elm);
^
"$(TOPDIR)/include/loc/_localedef.h", line 164: remark #4298-D: 64 bit
migration: addition result could be truncated before cast to bigger sized type
return (wmask_off - wtolower_off) / sizeof (__rw_lower_elm);
^
"$(TOPDIR)/include/loc/_localedef.h", line 168: remark #4298-D: 64 bit
migration: addition result could be truncated before cast to bigger sized type
return charmap_off - codeset_off;
^
"$(TOPDIR)/include/loc/_localedef.h", line 172: remark #4298-D: 64 bit
migration: addition result could be truncated before cast to bigger sized type
return wtoupper_off - charmap_off;
^
"$(TOPDIR)/include/loc/_localedef.h", line 122: remark #4299-D: 64 bit
migration: multiply result could be truncated before cast to bigger sized type
return *(_RWSTD_ARRAY_ELM (wchar_t, wchar_off, off * 2));
^
"$(TOPDIR)/include/loc/_localedef.h", line 128: remark #4298-D: 64 bit
migration: addition result could be truncated before cast to bigger sized type
return *(_RWSTD_ARRAY_ELM (wchar_t, wchar_off, off * 2 + 1));
^
"$(TOPDIR)/src/iso2022.cpp", line 764, procedure __rw::__rw_ksc5601_to_iso2022:
warning #20200-D: Potential null pointer dereference through esc is detected
(null definition:$(TOPDIR)/src/iso2022.cpp, line 677)
"$(TOPDIR)/src/iso2022.cpp", line 1541, procedure __rw::__rw_ucs4_to_interm:
warning #20206-D: Out of bound access (In expression "&db_array[(long long)i]",
array "db_array" [$(TOPDIR)/src/iso2022.cpp:1525] (type: struct _noname [6])
has element range [0 .. 5], reading element range [0 .. 11].)
"$(TOPDIR)/src/iso2022.cpp", line 1586, procedure __rw::__rw_ucs4_to_interm:
warning #20206-D: Out of bound access (In expression "&db_array[(long long)i]",
array "db_array" [$(TOPDIR)/src/iso2022.cpp:1525] (type: struct _noname [6])
has element range [0 .. 5], reading element range [0 .. 11].)
{noformat}
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