fzero-initialized-in-bss, Qzero-initialized-in-bss

Determines whether the compiler places in the DATA section any variables explicitly initialized with zeros.

Syntax

Linux and macOS:

-fzero-initialized-in-bss

-fno-zero-initialized-in-bss

Windows:

/Qzero-initialized-in-bss

/Qzero-initialized-in-bss-

Arguments

None

Default

-fno-zero-initialized-in-bss
or/Qzero-initialized-in-bss -

Variables explicitly initialized with zeros are placed in the BSS section. This can save space in the resulting code.

Description

This option determines whether the compiler places in the DATA section any variables explicitly initialized with zeros.

If option -fno-zero-initialized-in-bss (Linux* and OS X*) or /Qzero-initialized-in-bss- (Windows*) is specified, the compiler places in the DATA section any variables that are initialized to zero.

IDE Equivalent

Visual Studio: None

Eclipse: None

Xcode: Data > Place Zero-Initialized Variables in .bss

Alternate Options

None