c4817f5d4f
The Go spec requires If a deferred function value evaluates to nil, execution panics when the function is invoked, not when the "defer" statement is executed. On Wasm and AIX, currently we actually emit a nil check at the point of defer statement, which will make it panic too early. This CL fixes this. Also, on Wasm, now the nil function will be passed through deferreturn to jmpdefer, which does an explicit nil check and calls sigpanic if it is nil. This sigpanic, being called from assembly, is ABI0. So change the assembler backend to also handle sigpanic in ABI0. Fixes #34926. Updates #8047. Change-Id: I28489a571cee36d2aef041f917b8cfdc31d557d4 Reviewed-on: https://go-review.googlesource.com/c/go/+/201297 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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