QNX Technical Articles

Date of this edition: March 15, 2016

Target OS: This patch is compatible with targets that are running the QNX^® Neutrino^® RTOS 6.6.

Host OS: In order to apply this patch, you must have installed the QNX Software Development Platform 6.6 on one of the following development hosts:

• Microsoft Windows 8 Professional 64-bit, Windows 7 Professional 64-bit, or XP Professional SP3
• Linux Red Hat Enterprise Linux 6 64-bit or Ubuntu Workstation LTS 12.04 32- and 64-bit

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Contents

• What's in this patch?
• Fixed issues
• Known issues
• Technical support

Throughout this document, you may see reference numbers associated with particular issues, changes, etc. When corresponding with our Technical Support staff about a given issue, please quote the relevant reference number. You might also find the reference numbers useful for tracking issues as they become fixed.

What's in this patch?

This patch contains the following files, installed under $QNX_TARGET/usr/include:

• cpp/atomic
• cpp/initializer_list
• cpp/memory
• cpp/type_traits
• cpp/xstring
• cpp/xxatomic
• math.h
• sys/platform.h

Fixed issues

• C++ 11 bracket initialization no longer causes programs to fail with a SIGABRT. (Ref# J708960)
• You can now call make_pair with unique_ptr. (Ref# J875079)
• We've corrected some definitions in math.h that added the std:: prefix, which conflicts with explicit namespace use. (Ref# J999031)
• We've corrected a conversion error for a store of a volatile atomic. (Ref# J1359247)
• Using std::atomic with a function pointer no longer produces compilation errors. (Ref# J1358946)
• The std::atomic classes now conform to the constexpr requirements of the C++ standard, giving global atomics a dependable initialization order. (Ref# J880985)
• The following no longer produce an assertion failure:
  • atomic::compare_exchange_strong(other, value, std::memory_order_release)
  • atomic::compare_exchange_strong(other, value, std::memory_order_acq_rel)

  (Ref# J1429392)

Known issues

• Only the std::atomic class has been updated to reflect the constexpr requirements of the C++ standard. (Ref# J1467811)

Technical support

To obtain technical support for any QNX product, visit the Support area on our website (www.qnx.com). You'll find a wide range of support options, including community forums.