digitalmars.D.bugs - [Issue 19601] New: Running -profile=gc when no gc is logged leaves
- d-bugmail puremagic.com (30/30) Jan 21 2019 https://issues.dlang.org/show_bug.cgi?id=19601
https://issues.dlang.org/show_bug.cgi?id=19601 Issue ID: 19601 Summary: Running -profile=gc when no gc is logged leaves old misleading file contents Product: D Version: D2 Hardware: All OS: All Status: NEW Severity: minor Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: john.burton jbmail.com Rather minor issue but might be easy to fix if it's agreed it's a bug and worth the effort. Using the following option on dmd :- -profile=gc When the resulting executable file is run it logs GC operations to the file profilegc.log However if no GC operations occurs during the run, then any previous contents of that file is left unchanged which is misleading as the file does not accurately reflect the result of the profiling (which should be an empty file) This caused me a small amount of confusion when I was trying to eliminate the gc operations from some inner loop code and was trying to understand the results once I'd managed to eliminate all the GC operations. I would expect that it you've requested a gc profile and there is nothing for the log that an empty file is produces or some indication that there is no GC (or even the file is removed). --
Jan 21 2019