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https://issues.apache.org/jira/browse/STDCXX-1057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13202745#comment-13202745
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Stefan Teleman commented on STDCXX-1057:
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Yes, GNU libstdc++ sets it to (SIZE_MAX / 4) which means 1GB > 65K.
Stlport sets it to SIZE_MAX. SunPro C++ sets it to SIZE_MAX both in libCstd.so
and libstdcxx4.so.
> attempting to create a std::string of size 65535 or greater fails with
> Perennial CPPVS V8.1
> -------------------------------------------------------------------------------------------
>
> Key: STDCXX-1057
> URL: https://issues.apache.org/jira/browse/STDCXX-1057
> Project: C++ Standard Library
> Issue Type: Bug
> Components: 21. Strings
> Affects Versions: 4.2.1, 4.2.x, 4.3.x, 5.0.0
> Environment: Solaris 10 and 11, RedHat Linux, OpenSuSE Linux
> SUN C++ Compilers 12.1, 12.2, 12.3
> Defect is independent of compiler and platform
> Reporter: Stefan Teleman
> Labels: conformance, features, standards, test
> Fix For: 4.2.x, 4.3.x, 5.0.0
>
> Attachments: stdcxx-1057.patch, test.cc
>
>
> in member function:
> size_type basic_string<_CharT, _Traits, _Allocator>::max_size();
> the maximum size of a basic_string is restricted to less than 65535 bytes.
> The Standard is ambiguous as to what the max_size() of a std::string should
> actually be (see LWG Core Issue 197). However, less than 65535 bytes for
> the max_size of a std::string is rather small. GNU libstdc++ and stlport4
> set std::string::max_size to (SIZE_MAX / 4) (i.e. 1GB). Solaris sets it
> to SIZE_MAX.
> Perennial CPPVS explicitly tests for the creation of a std::string of size
> greater than 65535. In the current stdcxx implementation, this test fails.
> The max_size of a std::string should be significantly greater than 65535
> bytes.
> Test to reproduce the defect:
> {code:title=test.cc|borderStyle=solid}
> #include <iostream>
> #include <string>
> const size_t maxlen = 65536U;
> char array[maxlen];
> struct test_traits : public std::char_traits<char>
> { };
> template<class T>
> struct test_alloc : public std::allocator<T>
> {
> typedef typename std::allocator<T>::size_type size_type;
> template<class Y>
> struct rebind
> {
> typedef test_alloc<Y> other;
> };
> test_alloc() throw() { }
> test_alloc(const test_alloc& rhs) throw() { }
> template<class Y>
> test_alloc(const test_alloc<Y>& y) throw() { }
> ~test_alloc() throw() { }
> size_type max_size() const throw() { return maxlen; }
> };
> int main()
> {
> typedef
> std::basic_string<char, test_traits, test_alloc<char> > test_string;
> int ret = 0;
> size_t i, j;
> for (i = 0; i < maxlen; i++)
> array[i] = '*';
> array[maxlen - 1] = '\0';
> for (i = 0; i < maxlen - 1; i+= 8)
> {
> array[i] = '\0';
> test_string s(array);
> j = s.size();
> array[i] = '-';
> if (i != j)
> {
> std::cerr << "i = " << i << " j = " << j << " expected i == j"
> << std::endl;
> ret = 1;
> break;
> }
> }
> return ret;
> }
> {code}
> 1. Output from GCC 4.5.0:
> {noformat}
> [steleman@darthvader][/src/steleman/programming/stdcxx-ss122/bugfixes-sunw/6889771][02/06/2012
> 10:16:34][2162]>> ./test-gcc
> [steleman@darthvader][/src/steleman/programming/stdcxx-ss122/bugfixes-sunw/6889771][02/06/2012
> 10:16:48][2163]>> echo $status
> 0
> {noformat}
> 2. Output from Sun C++ 12.2 with stlport:
> {noformat}
> [steleman@darthvader][/src/steleman/programming/stdcxx-ss122/bugfixes-sunw/6889771][02/06/2012
> 10:16:50][2164]>> ./test-ss122-stlport
> [steleman@darthvader][/src/steleman/programming/stdcxx-ss122/bugfixes-sunw/6889771][02/06/2012
> 10:16:58][2165]>> echo $status
> 0
> {noformat}
> 3. Output from Sun C++ 12.2 with our patched stdcxx:
> {noformat}
> [steleman@darthvader][/src/steleman/programming/stdcxx-ss122/bugfixes-sunw/6889771][02/06/2012
> 10:17:00][2166]>> ./test-ss122-stdcxx
> [steleman@darthvader][/src/steleman/programming/stdcxx-ss122/bugfixes-sunw/6889771][02/06/2012
> 10:17:06][2167]>> echo $status
> 0
> {noformat}
> 4. Output from Pathscale 4.0.12.1 (which did not patch stdcxx):
> {noformat}
> [steleman@darthvader][/src/steleman/programming/stdcxx-ss122/bugfixes-sunw/6889771][02/06/2012
> 10:17:08][2168]>> ./test-pathscale
> Terminating due to uncaught exception 0x614240 of type std::length_error
> Abort (core dumped)
> [steleman@darthvader][/src/steleman/programming/stdcxx-ss122/bugfixes-sunw/6889771][02/06/2012
> 10:17:13][2169]>> echo $status
> 134
> {noformat}
> Patch for 4.2.1 to follow shortly.
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