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Diffstat (limited to 'src/cmd/compile/doc.go')
| -rw-r--r-- | src/cmd/compile/doc.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/cmd/compile/doc.go b/src/cmd/compile/doc.go index f76f402f38..81e6189a26 100644 --- a/src/cmd/compile/doc.go +++ b/src/cmd/compile/doc.go @@ -253,6 +253,9 @@ The //go:nosplit directive must be followed by a function declaration. It specifies that the function must omit its usual stack overflow check. This is most commonly used by low-level runtime code invoked at times when it is unsafe for the calling goroutine to be preempted. +Using this directive outside of low-level runtime code is not safe, +because it permits the nosplit function to overwrite the end of stack, +leading to memory corruption and arbitrary program failure. # Linkname Directive |