.ERR/.ERR1/.ERR2 (Force Assembly Error Condition)

The .ERR, .ERR1, and .ERR2 directives cause errors at the points at which they occur in the source file.

Syntax

.ERR
   or
.ERR1
   or
.ERR2

Remarks

The .ERR directive causes an error regardless of the pass. .ERR1 causes an error on the first pass only. .ERR2 causes an error on the second pass only. If you use the -Lp:1 option to request a first pass listing, the .ERR1 error message appears on the screen and in the listing file. Like other error conditions occurring during pass one, the error generated by .ERR1 does not cause the assembly to fail.

Example

This example ensures that you define either the DOS or the OS2 symbol. If you define neither, the assembler assembles the nested ELSE condition and produces an error message. The .ERR directive causes an error on each pass.

IFDEF DOS
      .
      .
      .
ELSE
      IFDEF OS2
         .
         .
         .
      ELSE
         .ERR
      ENDIF
ENDIF

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