Compiler -w Flags

-w compiler flags are warning flags.

All -w compiler flags are provided in the form:

-Wwarning-name

To enable the flag, use: -W*warning-name*

Example:
>cobc -Wall sample.cbl
To disable the flag, use: -Wno-*warning-name*

Example:
>cobc -Wno-all sample.cbl

Warnings are evaluated in the command line order. For example, use the command: >cobc -Wall -Wno-archaic to enable all warnings but the archaic features.

Note

cobc -w when used with no warning flag has the effect of disabling all warnings.
Example: >cobc -w sample.cbl

The Warning Compiler flags are listed in the table below:

Compiler Flag	Description
`-w*`	Disables all warnings.
`-Wall`	Enables all warnings.
`-Warchaic`	Warns if archaic features are used.
`-Wbdb`	Warns about bdb license. (default).
`-Wcall-params`	Warns if non 01/77 items are used for `CALL` parameters (NOT set with Wall).
`-Wconstant`	Warns if inconsistent constant is used.
`-Wimplicit-define`	Warns of implicitly defined data items.
`-Winformation`	Warns information about 'not recommended' code. `-Winformation` is applied by default.
`-Wlinkage`	Warns of dangling `LINKAGE` items. (NOT set with `-Wall`).
`-Wobsolete`	Warns if obsolete features are used.
`-Wparentheses`	Warns of lack of parentheses around `AND` within `OR`.
`-Wredefinition`	Warns if incompatible redefinition of data items are used. `-Wredefinition` is defined by default.
v`-Wstrict-typing`	Warns of type mismatch strictly.
`-Wsuggestion`	Warns suggestions about 'not recommended' code. `-Wsuggestion` is applied by default.
`-Wterminator`	Warns of lack of scope terminator, such as `END-XXX`. (NOT set with `-Wall`).
`-Wtruncate`	Warns of possible field truncations. `-Wtruncate` is applied by default.
`-Wunreachable`	Warns of unreachable statements.