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Usage Warning Options:
arg-alias [yes]: scalar argument same as another is modified
arg-array-alias [yes]: argument in same array as another is modified
arg-common-alias [yes]: scalar argument same as common variable, either is modified
arg-common-array-alias [yes]: array argument same as common variable, either is modified
arg-const-modified [yes]: constant or expression argument is modified
arg-unused [yes]: dummy argument declared but not used
com-block-unused [yes]: whole common block declared but not used
com-block-volatile [yes]: common block may lose definition if volatile
com-var-set-unused [yes]: common variable set but not used
com-var-uninitialized [yes]: common variable used but not set
com-var-unused [yes]: common variable declared but not used
do-index-modified [yes]: active DO index variable modified
ext-multiply-defined [yes]: external multiply defined
ext-declared-only [yes]: name declared EXTERNAL but not defined or used
ext-undefined [yes]: external declared or used but not defined (= -external)
ext-unused [yes]: external defined but not used
label-undefined [yes]: label used but undefined
label-unused [yes]: label defined but unused
var-set-unused [no]: local variable set but not used
var-uninitialized [no]: local variable used before set
var-unused [no]: local variable declared but not used
Prefix option name with no- to turn off option
If no options given, equivalent to -usage=all
Special keywords:
help: Print this list
all: Set all options
none: Clear all options
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