.ERR1            Force Error during Pass 1                     MASM Directive

.ERR1

Forces a warning error during Pass 1 of the assembly provided the /D
command line switch has been used to generate a Pass 1 listing.

Notes:     This directive could be used within conditional-assembly
blocks or macros to see what is expanded.

The error message that is generated by this directive is
'Forced error - pass1', which is error number 87.

This directive has no effect if the /D command line
switch is not used.

This conditional error directive will only generate a
warning error, not a fatal error.

See also: .ERR
See also: .ERR2

.ERR1 Force Error during Pass 1