System.SysUtils.EAccessViolation

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Delphi

EAccessViolation = class(EExternal);

C++

class PASCALIMPLEMENTATION EAccessViolation : public EExternal

Properties

Type	Visibility	Source	Unit	Parent
class	public	System.SysUtils.pas System.SysUtils.hpp	System.SysUtils	System.SysUtils

Description

EAccessViolation is the exception class for invalid memory access errors.

EAccessViolation is raised when an application:

• Dereferences a nil (Delphi) or NULL (C++) pointer.
• Writes to memory reserved for executable code.
• Attempts to access a memory address for which there is no virtual memory allocated to the application.

Run-time exception information is saved in fields provided by EExternal.

Note: Applications should not raise EAccessViolation directly, but should instead rely on the run time to raise this exception.

See Also

• EExternal

• EOutOfMemory

• EOutOfResources