Debugging with GT.M: Difference between revisions
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This is a list of past errors, separated by commas. | This is a list of past errors, separated by commas. | ||
Subsequent errors are added to the end of the list. | Subsequent errors are added to the end of the list. | ||
Example: | |||
GTM>w $ECODE | GTM>w $ECODE | ||
,M6,Z150373850, | ,M6,Z150373850, | ||
| Line 14: | Line 14: | ||
$ZSTATUS | $ZSTATUS | ||
This is detail about the most recent error. | This is detail about the most recent error. | ||
Example: | |||
GTM>w $ZSTATUS | GTM>w $ZSTATUS | ||
150373850,SubName+3^MyFunct,%GTM-E-UNDEF, Undefined local variable: Jxack | 150373850,SubName+3^MyFunct,%GTM-E-UNDEF, Undefined local variable: Jxack | ||
$ZMESSAGE(x) | |||
This will give a text message for a given error number. | |||
Example: To get details about the error number, 150373850, given above... | |||
GTM>w $ZMESSAGE(150373850) | |||
%GTM-E-UNDEF, Undefined local variable: !AD | |||
ZPRINT x (e.g. ZPRINT SubName+3^MyFunct) | |||
This will display the line that cause the program exception. | |||
The 'x' may be obtained from $ZSTATUS, or from $ZPOS (see below) | |||
$ZPOSITION (OR $ZPOS) | |||
Shows the current position of the current line of execution | |||
(or the last line exececuted in case of an error) | |||
ZWRITE | |||
Shows the entire variable table, displaying all defined variables. | |||
Revision as of 21:24, 23 March 2005
This information is from the GT.M Programmer's Manual. I'll just summarize a few points.
$ECODE
This is a list of past errors, separated by commas.
Subsequent errors are added to the end of the list.
Example:
GTM>w $ECODE
,M6,Z150373850,
Errors beginning with: "M" are standard errors
"U" are user errors
"Z" are GT.M errors
$ZSTATUS
This is detail about the most recent error.
Example:
GTM>w $ZSTATUS
150373850,SubName+3^MyFunct,%GTM-E-UNDEF, Undefined local variable: Jxack
$ZMESSAGE(x)
This will give a text message for a given error number.
Example: To get details about the error number, 150373850, given above...
GTM>w $ZMESSAGE(150373850)
%GTM-E-UNDEF, Undefined local variable: !AD
ZPRINT x (e.g. ZPRINT SubName+3^MyFunct) This will display the line that cause the program exception. The 'x' may be obtained from $ZSTATUS, or from $ZPOS (see below)
$ZPOSITION (OR $ZPOS) Shows the current position of the current line of execution (or the last line exececuted in case of an error)
ZWRITE Shows the entire variable table, displaying all defined variables.
