Stefan Teleman created STDCXX-1068:
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Summary: HP/UX's aCC alignment problems misalign everyone else
Key: STDCXX-1068
URL: https://issues.apache.org/jira/browse/STDCXX-1068
Project: C++ Standard Library
Issue Type: Bug
Components: 21. Strings
Affects Versions: 4.2.1, 4.2.x, 4.3.x
Environment: Any compiler besides HP/UX's aCC.
Reporter: Stefan Teleman
Fix For: 4.2.x, 4.3.x
The following code in include/rw/_strref.h at line 245:
{code title=_strref.h|borderStyle=solid}
union {
size_type _C_size; // Number of actual data values stored
_CharT _C_dummy; // force the alignment of the first char
} _C_size; // named to work around an HP aCC 3.30 bug
{code}
causes misaligned reads/writes with SunPro 12.1, 12.2, 12.3 on Solaris (SPARC
and Intel) and Linux (Intel), GCC 4.5.2 and 4.7.1 (Linux Intel) and Intel 2003
(Linux Intel).
The following patch fixes the problem:
{code title=_strref.h|borderStyle=solid}
union {
size_type _C_size; // Number of actual data values stored
+#if defined(__HP_aCC)
_CharT _C_dummy; // force the alignment of the first char
- } _C_size; // named to work around an HP aCC 3.30 bug
+#endif // named to work around an HP aCC 3.30 bug
+ } _C_size;
};
{code}
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