Linux in a Nutshell, Fifth Edition

gdb | 179

Linux

Commands

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-Wreturn-type

Warn about functions defined without return types or with

improper return types.

-Wshadow

Warn when a local variable shadows another local variable.

-Wstrict-prototypes

Insist that argument types be specified in function declara-

tions and definitions.

-Wswitch

Warn about switches that skip the index for one of their

enumerated types.

-Wtraditional

Warn when encountering code that produces different results

in ANSI C and traditional C.

-Wtrigraphs

Warn when encountering trigraphs.

-Wuninitialized

Warn when encountering uninitialized automatic variables.

-Wundef

Warn when encountering a nonmacro identifier in an #if

directive.

-Wunknown-pragmas

Warn when encountering a #pragma directive not under-

stood by gcc.

-Wunused

Warn about unused variables, functions, labels, and

parameters.

Pragma directives

#pragma interface [header-file]

Used in header files to force object files to provide definition

information via references instead of including it locally in

each file. C++-specific.

#pragma implementation [header-file]

Used in main input files to force generation of full output from

header-file (or, if it is not specified, from the header file with

the same basename as the file containing the pragma direc-

tive). This information will be globally visible. Normally the

specified ...