# Enabling Debugging Features

[configuration.debug_features]

The following macros control certain debugging features. In general, it is useful to compile with these features on for development code, and off for production code, because the features may decrease performance. The table below summarizes the macros and their default values. A value of 1 enables the corresponding feature; a value of 0 disables the feature.

Debugging Macros
Macro | Default Value | Feature
--- | --- | ---

`TBB_USE_DEBUG`

- Windows* OS: 1 if `_DEBUG` is defined, 0, otherwise.

- All other systems: 0.

Default value for all other macros in this table.

`TBB_USE_ASSERT` | `TBB_USE_DEBUG` | Enable internal assertion checking. Can significantly slow down performance.
`TBB_USE_PROFILING_TOOLS` | `TBB_USE_DEBUG` | Enable full support for analysis tools.

## TBB_USE_ASSERT Macro

The `TBB_USE_ASSERT` macro controls whether error checking is enabled in the header files. Define `TBB_USE_ASSERT` as `1` to enable error checking.

If an error is detected, the library prints an error message on `stderr` and calls the standard C routine `abort`. To stop a program when internal error checking detects a failure, place a breakpoint on `oneapi::tbb::assertion_failure`.

## TBB_USE_PROFILING_TOOLS Macro

The `TBB_USE_PROFILING_TOOLS` macro controls support for Intel® Inspector XE, Intel® VTune™ Amplifier XE and Intel® Advisor.

Define `TBB_USE_PROFILING_TOOLS` as `1` to enable full support for these tools. Leave `TBB_USE_PROFILING_TOOLS` undefined or equal to zero to enable top performance in release builds, at the expense of turning off some support for tools.