fasynchronous-unwind-tables

Determines whether unwind information is precise at an instruction boundary or at a call boundary.

Syntax

Linux:

-fasynchronous-unwind-tables

-fno-asynchronous-unwind-tables

Windows:

None

Arguments

None

Default

Intel® 64 architecture: -fasynchronous-unwind-tables

The unwind table generated is precise at an instruction boundary, enabling accurate unwinding at any instruction.

IA-32 architecture (Linux* only): -fno-asynchronous-unwind-tables

The unwind table generated is precise at call boundaries only.

Description

This option determines whether unwind information is precise at an instruction boundary or at a call boundary. The compiler generates an unwind table in DWARF2 or DWARF3 format, depending on which format is supported on your system.

If -fno-asynchronous-unwind-tables is specified, the unwind table is precise at call boundaries only. In this case, the compiler will avoid creating unwind tables for routines such as the following:

  • A C++ routine that does not declare objects with destructors and does not contain calls to routines that might throw an exception.

  • A C/C++ or Fortran routine compiled without -fexceptions.

  • A C/C++ or Fortran routine compiled with -fexceptions that does not contain calls to routines that might throw an exception.

IDE Equivalent

None

Alternate Options

None

See Also

Para obtener información más completa sobre las optimizaciones del compilador, consulte nuestro Aviso de optimización.