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package p type S struct { i interface { f([10736000000000]int) } }
compiling this results in:
$ go tool compile x.go panic: runtime error: makeslice: len out of range goroutine 1 [running]: cmd/compile/internal/gc.bvalloc(...) /Users/josh/go/tip/src/cmd/compile/internal/gc/bv.go:21 cmd/compile/internal/gc.livenessemit(0xc4200b8480, 0xc420300328, 0xc420300390) /Users/josh/go/tip/src/cmd/compile/internal/gc/plive.go:1254 +0x7c cmd/compile/internal/gc.liveness(0xc4202f84e0, 0xc420322140, 0x0) /Users/josh/go/tip/src/cmd/compile/internal/gc/plive.go:1302 +0x131 cmd/compile/internal/gc.genssa(0xc420322140, 0xc420086690) /Users/josh/go/tip/src/cmd/compile/internal/gc/ssa.go:4379 +0x1352 cmd/compile/internal/gc.compileSSA(0xc42038a000, 0x0) /Users/josh/go/tip/src/cmd/compile/internal/gc/pgen.go:242 +0x7e cmd/compile/internal/gc.compile(0xc42038a000) /Users/josh/go/tip/src/cmd/compile/internal/gc/pgen.go:219 +0x218 cmd/compile/internal/gc.funccompile(0xc42038a000) /Users/josh/go/tip/src/cmd/compile/internal/gc/dcl.go:1049 +0xb7 cmd/compile/internal/gc.genwrapper(0xc4203178c0, 0xc4202f5200, 0xc4203207e0, 0x0) /Users/josh/go/tip/src/cmd/compile/internal/gc/subr.go:1786 +0x73e cmd/compile/internal/gc.imethods(0xc4203178c0, 0xc420324a10, 0x10102dc, 0xc42031c498) /Users/josh/go/tip/src/cmd/compile/internal/gc/reflect.go:424 +0x318 cmd/compile/internal/gc.dtypesym(0xc4203178c0, 0xc4202efb60) /Users/josh/go/tip/src/cmd/compile/internal/gc/reflect.go:1189 +0x13d5 cmd/compile/internal/gc.dtypesym(0xc420317800, 0xc4202efd00) /Users/josh/go/tip/src/cmd/compile/internal/gc/reflect.go:1277 +0xe14 cmd/compile/internal/gc.dumpsignats() /Users/josh/go/tip/src/cmd/compile/internal/gc/reflect.go:1441 +0x3e7 cmd/compile/internal/gc.dumpobj1(0xc42001239c, 0x3, 0x3) /Users/josh/go/tip/src/cmd/compile/internal/gc/obj.go:141 +0x2af cmd/compile/internal/gc.dumpobj() /Users/josh/go/tip/src/cmd/compile/internal/gc/obj.go:51 +0x61 cmd/compile/internal/gc.Main(0x17756e8) /Users/josh/go/tip/src/cmd/compile/internal/gc/main.go:631 +0x24f7 main.main() /Users/josh/go/tip/src/cmd/compile/main.go:49 +0x89
Similar to #20529, although this also reproduces with 1.8. For code with a similar structure, see #20778.
Marking as unplanned, pending real code encountering this problem.
Found with go-fuzz.
The text was updated successfully, but these errors were encountered:
This no longer panics on tip:
$ go tool compile x.go <autogenerated>:1: stack frame too large (>1GB): 81909179 MB locals + 81909179 MB args
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compiling this results in:
Similar to #20529, although this also reproduces with 1.8. For code with a similar structure, see #20778.
Marking as unplanned, pending real code encountering this problem.
Found with go-fuzz.
The text was updated successfully, but these errors were encountered: