Opened 17 years ago

Last modified 12 years ago

#240 reopened Defect

Check return codes everywhere

Reported by: elfring Owned by: davea
Priority: Minor Milestone: Undetermined
Component: Client - Build Version:
Keywords: Cc:

Description

Some checks for return codes are missing.

Examples:
Would you like to add more error handling for return values from "malloc" like in the function "read_ppm_file" and from "fwrite" in the function "copy_stream"?

Change History (9)

comment:1 Changed 17 years ago by Ageless

Component: UndeterminedClient - Build
Owner: set to romw

comment:2 Changed 17 years ago by Ageless

Owner: changed from romw to davea

comment:3 Changed 17 years ago by davea

Priority: MajorMinor

I added a few. Not feasible to do them all right now.

comment:4 Changed 17 years ago by davea

Resolution: fixed
Status: newclosed

comment:5 Changed 17 years ago by elfring

Resolution: fixed
Status: closedreopened

I suggest to avoid unchecked function calls.
Would you like to detect every error situation as early as possible?

There are still some ignored error codes from functions like fread.
(By the way: Is it a bug that there is no break instruction at the end of "case '3':"? Is the fall-through really intended?)

comment:6 Changed 17 years ago by Nicolas

Fall-throughs on switch blocks should always be noticed with a //fallthrough comment in place of the break;.

Also, it's clear it's not feasible to check error codes on every function call. That's why handling were invented. BOINC should really start using them...

comment:7 Changed 17 years ago by Nicolas

Oops, the link on my previous comment is broken. I meant: That's whyexceptions were invented.

comment:8 Changed 17 years ago by elfring

Each return value should be checked to see if an exception object should be thrown. Are there any situations where the reaction "exit(errno)" or "abort()" would be more appropriate?

Would you like to reduce the efforts for error code checking by an exception class hierarchy?

comment:9 Changed 15 years ago by romw

Milestone: 6.6Undetermined
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