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This release includes the following enhancements:

Release date: November 26, 2025

Enhanced Unit Testing and Code Coverage

  • The GoogleTest unit testing framework is now included in the C/C++test CT distribution. See Unit Testing with GoogleTest.
  • The code analysis engine has been enhanced to better support modern C/C++. 

MCP Server Extension for AI Agents

C/C++test CT now includes an MCP (Model Context Protocol) Server extension that enables seamless integration between C/C++test CT and AI agents or LLM-based coding assistants (such as GitHub Copilot). This MCP Server can be used within any LLM-enabled development environment that supports MCP integration, including VS Code and others. With this extension, an AI agent can interact directly with C/C++test CT, delivering context-aware guidance, analysis, and automation.

This feature allows you to use an AI coding assistant to:

  • Retrieve line coverage information for analyzed code.
  • Provide guidance and instructions for applying coverage suppressions to specific code sections.
  • Access information from the product user guide.

For details, see Configuring the MCP Server Extension for AI Agents.

Support for Compilers

The following compilers are now supported:

Compiler NameCompiler Identifier

Hexagon Clang Compiler v. 19

hexagon-clang_19

QNX GCC 12.x (ARM64)

qccarm_12-64

TI ARM Clang Compiler 3.2

tiarmclang_3_2

See Compilers.

Additional Updates

  • Java JRE 17-21 is now required.

Deprecated and Removed Support

Compilers to Be Deprecated

Support for the following compilers will be deprecated in future releases:

  • ARM Compiler 6.14
  • Clang C/C++ Compiler v 12.0 (x86_64)
  • Clang C/C++ Compiler v 15.0 (x86_64)
  • GNU GCC 8.x (x86, x86_64, arm/aarch32, aarch64/arm64)
  • GNU GCC 9.x (x86, x86_64, arm/aarch32, aarch64/arm64)
  • Hexagon Clang Compiler v. 8.6.x

Deprecated Compilers

Support for the following compilers is deprecated and will be removed in future releases:

  • GNU GCC 7.x
  • GNU GCC 7.x (x86_64)
  • TI ARM C/C++ Compiler v18.1
  • TI ARM C/C++ Compiler GNU GCC 7.x

  • Wind River Clang 8.0.x

Removed Support for Compilers

The following compilers are no longer supported:

  • ARM Compiler 5.0
  • ARM Compiler 6.9
  • Clang C/C++ Compiler v 10.0 (x86_64)
  • GNU GCC 6.x
  • GNU GCC 6.x (x86_64)
  • Hexagon Clang Compiler v. 8.4.x
  • QNX GCC 5.x
  • QNX GCC 5.x (ARM)
  • QNX GCC 5.x (ARM64)
  • QNX GCC 5.x (x86-64)

Resolved Bugs and FRs

Bug/FR ID

Description

CPP-55820

[compiler] Support for Hexagon 19

CPP-59036

[engine] error: more than one instance of overloaded function

CPP-59050

[compiler] Support for QNX GCC 12.x

CPP-59175

[engine] static assertion failed with "abi not configured"

CPP-59201

[engine] "static assertion failed" during instrumentation

CPP-59574

[engine] error: no instance of constructor "google::protobuf::internal::InternalMetadata::Container<google::protobuf::UnknownFieldSet>::Container" matches the argument list

CPP-59607

[engine] static analysis fails with invalid type conversion

CPP-59614

[engine] cwc exit code 3: "expression must have a constant value" with Hexagon

CPP-59616

[engine] error: a class or namespace qualified name is required

CPP-59634

[engine] Parse error for generated Google Protocol Buffers header

CPP-59638

[engine] error: the default constructor of "std::basic_format_arg<std::format_context>" cannot be referenced

CPP-59684

[coverage] Improve coverage instrumentation for C99 _Generic selection

CPP-59695

[engine] Parse error: function cannot be referenced - it is a deleted function

CPP-59742

[engine] error: the default constructor of "std::basic_format_arg<std::format_context>" cannot be referenced

CPP-59754

[engine] Class template is not compatible with template template parameter

CPP-59755

[engine] Program received signal 11 when instrumenting with cpptestcc

CPP-59761

[engine] Instrumentation fails once all template instantiations are provided

CPP-59777

[engine] parser performance problem during SCA

CPP-59789

[coverage] Inconsistent coverage statistics (HTML) after merging coverage from multiple runs with path mapping

CPP-59801

[engine] invalid alignment value specified by attribute - aligned(0x100000)

CPP-59809

[engine] Instrumentation compilation error: error C2653: ... is not a class or namespace name

CPP-60149

[engine] error: no instance of "toDicom" matches the argument list

CPP-60188

[compiler] Add/improve support for -Wc/-Wp option prefixes for QCC compiler

CPP-60191

[engine] error: more than one instance of overloaded function

CPP-60200

[engine] Missing support for __is_bitwise_cloneable

CPP-60207

[engine] error: class type not suitable for use with designators

CPP-60212

[engine] Instrumentation [xharness] crashes with signal 11

CPP-60242

[compiler] Dependencies for temporary files injected by cpptestcc into QNX qcc build

CPP-60282

[engine] instrumentation compilation error: conversion from AbstractProperty to char is ambiguous

CPP-60338

[engine] Class has no member "space_ship" parse errors

CPP-60374

[engine] internal error: assertion failed at: "lower_name.c", line 2703 in mangled_encoding_for_template_parameter

CPP-60391

[engine] parse error: no instance of constructor...

CPP-60400

[engine] Instrumentation compilation error: the value of '__CPTR_cui_4079667399_95697_12962959' is not usable in a constant expression

CPP-60402

[engine] error: constexpr constructor must initialize direct base class

CPP-60410

[compiler] qccarm_8-64 compiler still uses -lang-c even though it is deprecated

CPP-60476

[engine] Segmentation fault when running google tests with cpptestcc

CPP-60497

[coverage] error generating HTML report for .cov file with no function data

CPP-60520

[engine] EDG parser crash

CPP-60548

[engine] Parse error - incompatible declaration

CPP-60557

[engine] internal error: assertion failed at: "lower_name.c", line 2703 in mangled_encoding_for_template_parameter

CPP-60564

[engine] error: function cannot be referenced – it is a deleted function

CPP-60668

[coverage] Improve collecting coverage for C++ templates with std::enable_if in template parameters

CPP-60672

[engine] error: declaration is incompatible

CPP-60790

[engine] error: a constexpr function cannot have a nonliteral return type

CPP-60842

[coverage] Coverage not collected for lambda used to initialize field directly in class


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