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runtime/pprof: update example comment to check error on Close

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Programs should always check the error return of Close for a file opened
for writing. Update the example code in the comment to mention this.

Change-Id: I2ff6866ff1fe23b47c54268ac8e182210cc876c5
Reviewed-on: https://go-review.googlesource.com/c/go/+/202137
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Ian Lance Taylor 2019-10-18 23:16:16 -07:00
parent 04e80fb2c9
commit 6cbd737c8e
1 changed files with 2 additions and 2 deletions
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4
src/runtime/pprof/pprof.go
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@ -28,7 +28,7 @@
// if err != nil {
// log.Fatal("could not create CPU profile: ", err)
// }
// defer f.Close()
// defer f.Close() // error handling omitted for example
// if err := pprof.StartCPUProfile(f); err != nil {
// log.Fatal("could not start CPU profile: ", err)
// }
@ -42,7 +42,7 @@
// if err != nil {
// log.Fatal("could not create memory profile: ", err)
// }
// defer f.Close()
// defer f.Close() // error handling omitted for example
// runtime.GC() // get up-to-date statistics
// if err := pprof.WriteHeapProfile(f); err != nil {
// log.Fatal("could not write memory profile: ", err)