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Fix typos, add clib namespace issue

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[SVN r8850]
This commit is contained in:
Beman Dawes 2001-02-02 01:59:51 +00:00
parent d2170a34a6
commit 4483499e29
1 changed files with 34 additions and 24 deletions
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microsoft_vcpp.html
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@ -24,7 +24,7 @@
Similar to the Similar to the
<a href="borland_cpp.html">portability hints for Borland C++</a>, <a href="borland_cpp.html">portability hints for Borland C++</a>,
this page provides hints on some language features of the Microsoft Visual C++ this page provides hints on some language features of the Microsoft Visual C++
version 6.0 servicepack 4 compiler. version 6.0 service pack 4 compiler.
Each entry in the following list describes a particular issue, Each entry in the following list describes a particular issue,
complete with sample source code to demonstrate the effect. complete with sample source code to demonstrate the effect.
@ -86,18 +86,18 @@ Trying to explicitly instantiate a function template leads to the
wrong function being called silently. wrong function being called silently.
<pre> <pre>
#include &lt;stdio.h> #include &lt;stdio.h&gt;
template&lt;class T> template&lt;class T&gt;
void f() void f()
{ {
printf("%d\n", sizeof(T)); printf(&quot;%d\n&quot;, sizeof(T));
} }
int main() int main()
{ {
f&lt;double>(); // output: "1" f&lt;double&gt;(); // output: &quot;1&quot;
f&lt;char>(); // output: "1" f&lt;char&gt;(); // output: &quot;1&quot;
return 0; return 0;
} }
</pre> </pre>
@ -134,7 +134,7 @@ not work.
<pre> <pre>
struct A struct A
{ {
static const int i = 5; // "invalid syntax for pure virtual method" static const int i = 5; // &quot;invalid syntax for pure virtual method&quot;
}; };
</pre> </pre>
@ -164,13 +164,13 @@ void g()
A Template cannot be declared a friend of a class. A Template cannot be declared a friend of a class.
<pre> <pre>
template&lt;class T> template&lt;class T&gt;
struct A {}; struct A {};
struct B struct B
{ {
template&lt;class T> template&lt;class T&gt;
friend struct A; // "syntax error" friend struct A; // &quot;syntax error&quot;
}; };
</pre> </pre>
@ -181,16 +181,16 @@ templates</h3>
Defining member templates outside their enclosing class does not work. Defining member templates outside their enclosing class does not work.
<pre> <pre>
template&lt;class T> template&lt;class T&gt;
struct A struct A
{ {
template&lt;class U> template&lt;class U&gt;
void f(); void f();
}; };
template&lt;class T> template&lt;class T&gt;
template&lt;class U> // "syntax error" template&lt;class U&gt; // &quot;syntax error&quot;
void A&lt;T>::f() // "T: undeclared identifier" void A&lt;T&gt;::f() // &quot;T: undeclared identifier&quot;
{ {
} }
</pre> </pre>
@ -204,14 +204,14 @@ their enclosing class.
Partial specialization of class templates does not work. Partial specialization of class templates does not work.
<pre> <pre>
template&lt;class T> template&lt;class T&gt;
struct A {}; struct A {};
template&lt;class T> template&lt;class T&gt;
struct B {}; struct B {};
template&lt;class T> template&lt;class T&gt;
struct A&lt;B&lt;T> > {}; // template class was already defined as a non-template struct A&lt;B&lt;T&gt; &gt; {}; // template class was already defined as a non-template
</pre> </pre>
<strong>Workaround:</strong> In some situations where interface <strong>Workaround:</strong> In some situations where interface
@ -219,17 +219,17 @@ does not matter, member class templates can simulate partial
specialization. specialization.
<h3>[template-value] Dependent emplate value parameters</h3> <h3>[template-value] Dependent template value parameters</h3>
Template value parameters whose type depends on a previous template Template value parameters whose type depends on a previous template
parameter provoke an internal compiler error if the correct syntax parameter provoke an internal compiler error if the correct syntax
(with "typename") is used. (with "typename") is used.
<pre> <pre>
template&lt;class T, typename T::result_type> // C1001: INTERNAL COMPILER ERROR: ms template&lt;class T, typename T::result_type&gt; // C1001: INTERNAL COMPILER ERROR: ms
c1.cpp, line 1794 c1.cpp, line 1794
struct B {}; struct B {};
// (omit "typename" and it compiles) // (omit &quot;typename&quot; and it compiles)
</pre> </pre>
@ -239,11 +239,21 @@ struct B {};
The type <code>wchar_t</code> is not a built-in type. The type <code>wchar_t</code> is not a built-in type.
<pre> <pre>
wchar_t x; // "missing storage class or type identifier" wchar_t x; // &quot;missing storage class or type identifier&quot;
</pre> </pre>
<p> <h2>
Standard Library</h2>
<h3>[clib-namespace] C library names in global namespace instead of std</h3>
<p>Library names from the &lt;c...&gt; headers are in the global namespace
instead of namespace std.<p><b>Workaround:</b>&nbsp; The header <a href="../libs/config/index.htm">boost/config.hpp</a>
will define BOOST_NO_STDC_NAMESPACE. It can be used as follows:
<pre># ifdef BOOST_NO_STDC_NAMESPACE
namespace std { using ::abs; using ::fabs; }
# endif</pre>
<p>Because std::size_t and std::ptrdiff_t are so commonly used, the workaround
for these is already provided in boost/config.hpp.<p>&nbsp;
<hr> <hr>
2001-02-01 <a href="../people/jens_maurer.htm">Jens Maurer</a> 2001-02-01 <a href="../people/jens_maurer.htm">Jens Maurer</a>