Commita93a663

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[3.7]bpo-33363: raise SyntaxError for async for/with outside async functions (GH-6616). (GH-6619)

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+25

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Lines changed: 16 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -362,7 +362,22 @@ async def bar(): pass`
`362`	`362`	`"""def foo():`
`363`	`363`	`async def bar():`
`364`	`364`	`pass\nawait a`
`365`		`- """]`
	`365`	`+ """,`
	`366`	`+"""def foo():`
	`367`	`+ async for i in arange(2):`
	`368`	`+ pass`
	`369`	`+ """,`
	`370`	`+"""def foo():`
	`371`	`+ async with resource:`
	`372`	`+ pass`
	`373`	`+ """,`
	`374`	`+"""async with resource:`
	`375`	`+ pass`
	`376`	`+ """,`
	`377`	`+"""async for i in arange(2):`
	`378`	`+ pass`
	`379`	`+ """,`
	`380`	`+ ]`
`366`	`381`
`367`	`382`	`forcodeinsamples:`
`368`	`383`	`withself.subTest(code=code),self.assertRaises(SyntaxError):`

Lines changed: 2 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+Raise a SyntaxError for ``async with`` and ``async for`` statements outside
	`2`	`+of async functions.`

Lines changed: 7 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -2339,6 +2339,10 @@ compiler_async_for(struct compiler *c, stmt_ty s)`
`2339`	`2339`	`basicblocktry,except,end,after_try,*try_cleanup,`
`2340`	`2340`	`*after_loop_else;`
`2341`	`2341`
	`2342`	`+if (c->u->u_scope_type!=COMPILER_SCOPE_ASYNC_FUNCTION) {`
	`2343`	`+returncompiler_error(c,"'async for' outside async function");`
	`2344`	`+ }`
	`2345`	`+`
`2342`	`2346`	`PyObject*stop_aiter_error=_PyUnicode_FromId(&PyId_StopAsyncIteration);`
`2343`	`2347`	`if (stop_aiter_error==NULL) {`
`2344`	`2348`	`return0;`
`@@ -4204,6 +4208,9 @@ compiler_async_with(struct compiler *c, stmt_ty s, int pos)`
`4204`	`4208`	`withitem_tyitem=asdl_seq_GET(s->v.AsyncWith.items,pos);`
`4205`	`4209`
`4206`	`4210`	`assert(s->kind==AsyncWith_kind);`
	`4211`	`+if (c->u->u_scope_type!=COMPILER_SCOPE_ASYNC_FUNCTION) {`
	`4212`	`+returncompiler_error(c,"'async with' outside async function");`
	`4213`	`+ }`
`4207`	`4214`
`4208`	`4215`	`block=compiler_new_block(c);`
`4209`	`4216`	`finally=compiler_new_block(c);`

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