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runtime: make fatal failures unrecoverable

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Match the Go runtime by terminating for deadlocks, stack overflows,
runtime and GC invariants, invalid lock operations, and platform
initialization failures instead of routing them through panic/recover.

Keep language-level runtime errors and unsupported user operations
recoverable. Add crash coverage that verifies fatal errors bypass deferred
recover calls.
This commit is contained in:
Jake Bailey
2026-07-24 10:49:50 -07:00
committed by Ron Evans
parent 9105cce340
commit 16fc1ea2bb
41 changed files with 144 additions and 101 deletions
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src/internal/task/queue.go
+2 -2
View File
@@ -15,7 +15,7 @@ func (q *Queue) Push(t *Task) {
mask := lockAtomics()
if asserts && t.Next != nil {
unlockAtomics(mask)
panic("runtime: pushing a task to a queue with a non-nil Next pointer")
runtimeFatal("runtime: pushing a task to a queue with a non-nil Next pointer")
}
if q.tail != nil {
q.tail.Next = t
@@ -78,7 +78,7 @@ func (s *Stack) Push(t *Task) {
mask := lockAtomics()
if asserts && t.Next != nil {
unlockAtomics(mask)
panic("runtime: pushing a task to a stack with a non-nil Next pointer")
runtimeFatal("runtime: pushing a task to a stack with a non-nil Next pointer")
}
s.top, t.Next = t, s.top
unlockAtomics(mask)