[3.13] GH-135171: Fix generator expressions one last time (hopefully) (GH-135225)

[markshannon]

• Issue: Generator expression behavior changed in 3.13.4 - it does not throw exception anymore #135171

[vstinner]

WASI CI failed: test_email.test_group_quoted_backslashes_in_name() failed with call stack exhausted:

Details

test_group_quoted_backslashes_in_name (test.test_email.test_headerregistry.TestAddressHeader.test_group_quoted_backslashes_in_name) ... Error: failed to run main module `python.wasm` Caused by: 0: failed to invoke command default 1: error while executing at wasm backtrace: 0: python.wasm!_PyEval_EvalFrameDefault 1: 0x29b6d9 - python.wasm!_PyEval_Vector 2: 0xcc8da - python.wasm!_PyFunction_Vectorcall 3: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 4: 0xcc865 - python.wasm!PyObject_CallOneArg 5: 0xdddf0 - python.wasm!property_descr_get 6: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 7: 0x14c99e - python.wasm!PyObject_GenericGetAttr 8: 0x14d5af - python.wasm!PyObject_GetAttr 9: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 10: 0xf269c - python.wasm!gen_send_ex2 11: 0xf2363 - python.wasm!gen_iternext 12: 0x9f498 - python.wasm!PyIter_Next 13: 0x26de55 - python.wasm!builtin_sum 14: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 15: 0x29b6d9 - python.wasm!_PyEval_Vector 16: 0xcc8da - python.wasm!_PyFunction_Vectorcall 17: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 18: 0xcc865 - python.wasm!PyObject_CallOneArg 19: 0xdddf0 - python.wasm!property_descr_get 20: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 21: 0x14c99e - python.wasm!PyObject_GenericGetAttr 22: 0x14d5af - python.wasm!PyObject_GetAttr 23: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 24: 0xf269c - python.wasm!gen_send_ex2 25: 0xf2363 - python.wasm!gen_iternext 26: 0x9f498 - python.wasm!PyIter_Next 27: 0x26de55 - python.wasm!builtin_sum 28: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 29: 0x29b6d9 - python.wasm!_PyEval_Vector 30: 0xcc8da - python.wasm!_PyFunction_Vectorcall 31: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 32: 0xcc865 - python.wasm!PyObject_CallOneArg 33: 0xdddf0 - python.wasm!property_descr_get 34: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 35: 0x14c99e - python.wasm!PyObject_GenericGetAttr 36: 0x14d5af - python.wasm!PyObject_GetAttr 37: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 38: 0xf269c - python.wasm!gen_send_ex2 39: 0xf2363 - python.wasm!gen_iternext 40: 0x9f498 - python.wasm!PyIter_Next 41: 0x26de55 - python.wasm!builtin_sum 42: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 43: 0x29b6d9 - python.wasm!_PyEval_Vector 44: 0xcc8da - python.wasm!_PyFunction_Vectorcall 45: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 46: 0xcc865 - python.wasm!PyObject_CallOneArg 47: 0xdddf0 - python.wasm!property_descr_get 48: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 49: 0x14c99e - python.wasm!PyObject_GenericGetAttr 50: 0x14d5af - python.wasm!PyObject_GetAttr 51: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 52: 0xf269c - python.wasm!gen_send_ex2 53: 0xf2363 - python.wasm!gen_iternext 54: 0x9f498 - python.wasm!PyIter_Next 55: 0x26de55 - python.wasm!builtin_sum 56: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 57: 0x29b6d9 - python.wasm!_PyEval_Vector 58: 0xcc8da - python.wasm!_PyFunction_Vectorcall 59: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 60: 0xcc865 - python.wasm!PyObject_CallOneArg 61: 0xdddf0 - python.wasm!property_descr_get 62: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 63: 0x14c99e - python.wasm!PyObject_GenericGetAttr 64: 0x14d5af - python.wasm!PyObject_GetAttr 65: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 66: 0xf269c - python.wasm!gen_send_ex2 67: 0xf2363 - python.wasm!gen_iternext 68: 0x9f498 - python.wasm!PyIter_Next 69: 0x26de55 - python.wasm!builtin_sum 70: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 71: 0x29b6d9 - python.wasm!_PyEval_Vector 72: 0xcc8da - python.wasm!_PyFunction_Vectorcall 73: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 74: 0xcc865 - python.wasm!PyObject_CallOneArg 75: 0xdddf0 - python.wasm!property_descr_get 76: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 77: 0x14c99e - python.wasm!PyObject_GenericGetAttr 78: 0x14d5af - python.wasm!PyObject_GetAttr 79: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 80: 0xf269c - python.wasm!gen_send_ex2 81: 0xf2363 - python.wasm!gen_iternext 82: 0x9f498 - python.wasm!PyIter_Next 83: 0x26de55 - python.wasm!builtin_sum 84: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 85: 0x29b6d9 - python.wasm!_PyEval_Vector 86: 0xcc8da - python.wasm!_PyFunction_Vectorcall 87: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 88: 0xcc865 - python.wasm!PyObject_CallOneArg 89: 0xdddf0 - python.wasm!property_descr_get 90: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 91: 0x14c99e - python.wasm!PyObject_GenericGetAttr 92: 0x14d5af - python.wasm!PyObject_GetAttr 93: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 94: 0xf269c - python.wasm!gen_send_ex2 95: 0xf2363 - python.wasm!gen_iternext 96: 0x9f498 - python.wasm!PyIter_Next 97: 0x26de55 - python.wasm!builtin_sum 98: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 99: 0x29b6d9 - python.wasm!_PyEval_Vector 100: 0xcc8da - python.wasm!_PyFunction_Vectorcall 101: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 102: 0xcc865 - python.wasm!PyObject_CallOneArg 103: 0xdddf0 - python.wasm!property_descr_get 104: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 105: 0x14c99e - python.wasm!PyObject_GenericGetAttr 106: 0x14d5af - python.wasm!PyObject_GetAttr 107: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 108: 0xf269c - python.wasm!gen_send_ex2 109: 0xf2363 - python.wasm!gen_iternext 110: 0x9f498 - python.wasm!PyIter_Next 111: 0x26de55 - python.wasm!builtin_sum 112: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 113: 0x29b6d9 - python.wasm!_PyEval_Vector 114: 0xcc8da - python.wasm!_PyFunction_Vectorcall 115: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 116: 0xcc865 - python.wasm!PyObject_CallOneArg 117: 0xdddf0 - python.wasm!property_descr_get 118: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 119: 0x14c99e - python.wasm!PyObject_GenericGetAttr 120: 0x14d5af - python.wasm!PyObject_GetAttr 121: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 122: 0xf269c - python.wasm!gen_send_ex2 123: 0xf2363 - python.wasm!gen_iternext 124: 0x9f498 - python.wasm!PyIter_Next 125: 0x26de55 - python.wasm!builtin_sum 126: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 127: 0x29b6d9 - python.wasm!_PyEval_Vector 128: 0xcc8da - python.wasm!_PyFunction_Vectorcall 129: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 130: 0xcc865 - python.wasm!PyObject_CallOneArg 131: 0xdddf0 - python.wasm!property_descr_get 132: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 133: 0x14c99e - python.wasm!PyObject_GenericGetAttr 134: 0x14d5af - python.wasm!PyObject_GetAttr 135: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 136: 0xf269c - python.wasm!gen_send_ex2 137: 0xf2363 - python.wasm!gen_iternext 138: 0x9f498 - python.wasm!PyIter_Next 139: 0x26de55 - python.wasm!builtin_sum 140: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 141: 0x29b6d9 - python.wasm!_PyEval_Vector 142: 0xcc8da - python.wasm!_PyFunction_Vectorcall 143: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 144: 0xcc865 - python.wasm!PyObject_CallOneArg 145: 0xdddf0 - python.wasm!property_descr_get 146: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 147: 0x14c99e - python.wasm!PyObject_GenericGetAttr 148: 0x14d5af - python.wasm!PyObject_GetAttr 149: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 150: 0xf269c - python.wasm!gen_send_ex2 151: 0xf2363 - python.wasm!gen_iternext 152: 0x9f498 - python.wasm!PyIter_Next 153: 0x26de55 - python.wasm!builtin_sum 154: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 155: 0x29b6d9 - python.wasm!_PyEval_Vector 156: 0xcc8da - python.wasm!_PyFunction_Vectorcall 157: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 158: 0xcc865 - python.wasm!PyObject_CallOneArg 159: 0xdddf0 - python.wasm!property_descr_get 160: 0x14cab8 - python.wasm!_PyObject_GenericGetAttrWithDict 161: 0x14c99e - python.wasm!PyObject_GenericGetAttr 162: 0x14d5af - python.wasm!PyObject_GetAttr 163: 0x293376 - python.wasm!_PyEval_EvalFrameDefault 164: 0xf269c - python.wasm!gen_send_ex2 165: 0xf2363 - python.wasm!gen_iternext 166: 0x9f498 - python.wasm!PyIter_Next 167: 0x26de55 - python.wasm!builtin_sum 168: 0x277886 - python.wasm!_PyEval_EvalFrameDefault 169: 0x29b6d9 - python.wasm!_PyEval_Vector 170: 0xcc8da - python.wasm!_PyFunction_Vectorcall 171: 0xcb946 - python.wasm!_PyObject_VectorcallDictTstate 172: 0xcca94 - python.wasm!_PyObject_Call_Prepend 173: 0x196c46 - python.wasm!slot_tp_new 174: 0x18baa4 - python.wasm!type_call 175: 0xcb773 - python.wasm!_PyObject_MakeTpCall 176: 0xcb467 - python.wasm!_PyObject_VectorcallTstate 177: 0xcc5da - python.wasm!PyObject_Vectorcall 178: 0x2796fa - python.wasm!_PyEval_EvalFrameDefault 179: 0x29b6d9 - python.wasm!_PyEval_Vector 180: 0xcc8da - python.wasm!_PyFunction_Vectorcall 181: 0xcb946 - python.wasm!_PyObject_VectorcallDictTstate 182: 0xcca94 - python.wasm!_PyObject_Call_Prepend 183: 0x195b2a - python.wasm!slot_tp_call 184: 0xcb773 - python.wasm!_PyObject_MakeTpCall 185: 0xcb467 - python.wasm!_PyObject_VectorcallTstate 186: 0xcc5da - python.wasm!PyObject_Vectorcall 187: 0x2796fa - python.wasm!_PyEval_EvalFrameDefault 188: 0x29b6d9 - python.wasm!_PyEval_Vector 189: 0xcc8da - python.wasm!_PyFunction_Vectorcall 190: 0xcead0 - python.wasm!_PyObject_VectorcallTstate 191: 0xce92b - python.wasm!method_vectorcall 192: 0xcc4d4 - python.wasm!_PyVectorcall_Call 193: 0xcc68d - python.wasm!_PyObject_Call 194: 0xcc7ef - python.wasm!PyObject_Call 195: 0x297b57 - python.wasm!_PyEval_EvalFrameDefault 196: 0x29b6d9 - python.wasm!_PyEval_Vector 197: 0xcc8da - python.wasm!_PyFunction_Vectorcall 198: 0xcead0 - python.wasm!_PyObject_VectorcallTstate 199: 0xce92b - python.wasm!method_vectorcall 200: 0xcc4d4 - python.wasm!_PyVectorcall_Call 201: 0xcc68d - python.wasm!_PyObject_Call 202: 0xcc7ef - python.wasm!PyObject_Call 203: 0x297b57 - python.wasm!_PyEval_EvalFrameDefault 204: 0x29b6d9 - python.wasm!_PyEval_Vector 205: 0xcc8da - python.wasm!_PyFunction_Vectorcall 206: 0xcb946 - python.wasm!_PyObject_VectorcallDictTstate 207: 0xcca94 - python.wasm!_PyObject_Call_Prepend 208: 0x195b2a - python.wasm!slot_tp_call 209: 0xcb773 - python.wasm!_PyObject_MakeTpCall 210: 0xcb467 - python.wasm!_PyObject_VectorcallTstate 211: 0xcc5da - python.wasm!PyObject_Vectorcall 212: 0x2796fa - python.wasm!_PyEval_EvalFrameDefault 213: 0x29b6d9 - python.wasm!_PyEval_Vector 214: 0xcc8da - python.wasm!_PyFunction_Vectorcall 215: 0xcead0 - python.wasm!_PyObject_VectorcallTstate 216: 0xce92b - python.wasm!method_vectorcall 217: 0xcc4d4 - python.wasm!_PyVectorcall_Call 218: 0xcc68d - python.wasm!_PyObject_Call 219: 0xcc7ef - python.wasm!PyObject_Call 220: 0x297b57 - python.wasm!_PyEval_EvalFrameDefault 221: 0x29b6d9 - python.wasm!_PyEval_Vector 222: 0xcc8da - python.wasm!_PyFunction_Vectorcall 223: 0xcb946 - python.wasm!_PyObject_VectorcallDictTstate 224: 0xcca94 - python.wasm!_PyObject_Call_Prepend 225: 0x195b2a - python.wasm!slot_tp_call 226: 0xcb773 - python.wasm!_PyObject_MakeTpCall 227: 0xcb467 - python.wasm!_PyObject_VectorcallTstate 228: 0xcc5da - python.wasm!PyObject_Vectorcall 229: 0x2796fa - python.wasm!_PyEval_EvalFrameDefault 230: 0x29b6d9 - python.wasm!_PyEval_Vector 231: 0xcc8da - python.wasm!_PyFunction_Vectorcall 232: 0xcead0 - python.wasm!_PyObject_VectorcallTstate 233: 0xce92b - python.wasm!method_vectorcall 234: 0xcc4d4 - python.wasm!_PyVectorcall_Call 235: 0xcc68d - python.wasm!_PyObject_Call 236: 0xcc7ef - python.wasm!PyObject_Call 237: 0x297b57 - python.wasm!_PyEval_EvalFrameDefault 238: 0x29b6d9 - python.wasm!_PyEval_Vector 239: 0xcc8da - python.wasm!_PyFunction_Vectorcall 240: 0xcb946 - python.wasm!_PyObject_VectorcallDictTstate 241: 0xcca94 - python.wasm!_PyObject_Call_Prepend 242: 0x195b2a - python.wasm!slot_tp_call 243: 0xcb773 - python.wasm!_PyObject_MakeTpCall 244: 0xcb467 - python.wasm!_PyObject_VectorcallTstate 245: 0xcc5da - python.wasm!PyObject_Vectorcall 246: 0x2796fa - python.wasm!_PyEval_EvalFrameDefault 247: 0x29b6d9 - python.wasm!_PyEval_Vector 248: 0xcc8da - python.wasm!_PyFunction_Vectorcall 249: 0xcead0 - python.wasm!_PyObject_VectorcallTstate 250: 0xce92b - python.wasm!method_vectorcall 251: 0xcc4d4 - python.wasm!_PyVectorcall_Call 252: 0xcc68d - python.wasm!_PyObject_Call 253: 0xcc7ef - python.wasm!PyObject_Call 254: 0x297b57 - python.wasm!_PyEval_EvalFrameDefault 255: 0x29b6d9 - python.wasm!_PyEval_Vector 256: 0xcc8da - python.wasm!_PyFunction_Vectorcall 257: 0xcb946 - python.wasm!_PyObject_VectorcallDictTstate 258: 0xcca94 - python.wasm!_PyObject_Call_Prepend 259: 0x195b2a - python.wasm!slot_tp_call 260: 0xcb773 - python.wasm!_PyObject_MakeTpCall 261: 0xcb467 - python.wasm!_PyObject_VectorcallTstate 262: 0xcc5da - python.wasm!PyObject_Vectorcall 263: 0x2796fa - python.wasm!_PyEval_EvalFrameDefault 264: 0x29b6d9 - python.wasm!_PyEval_Vector 265: 0xcc8da - python.wasm!_PyFunction_Vectorcall 266: 0xcead0 - python.wasm!_PyObject_VectorcallTstate 267: 0xce92b - python.wasm!method_vectorcall 268: 0xcc4d4 - python.wasm!_PyVectorcall_Call 269: 0xcc68d - python.wasm!_PyObject_Call 270: 0xcc7ef - python.wasm!PyObject_Call 271: 0x297b57 - python.wasm!_PyEval_EvalFrameDefault 272: 0x29b6d9 - python.wasm!_PyEval_Vector 273: 0xcc8da - python.wasm!_PyFunction_Vectorcall 274: 0xcb946 - python.wasm!_PyObject_VectorcallDictTstate 275: 0xcca94 - python.wasm!_PyObject_Call_Prepend 276: 0x195b2a - python.wasm!slot_tp_call 277: 0xcb773 - python.wasm!_PyObject_MakeTpCall 278: 0xcb467 - python.wasm!_PyObject_VectorcallTstate 279: 0xcc5da - python.wasm!PyObject_Vectorcall 280: 0x2990cd - python.wasm!_PyEval_EvalFrameDefault 281: 0x26f792 - python.wasm!PyEval_EvalCode 282: 0x26a49e - python.wasm!builtin_exec 283: 0x145837 - python.wasm!cfunction_vectorcall_FASTCALL_KEYWORDS 284: 0xcb47d - python.wasm!_PyObject_VectorcallTstate 285: 0xcc5da - python.wasm!PyObject_Vectorcall 286: 0x2990cd - python.wasm!_PyEval_EvalFrameDefault 287: 0x29b6d9 - python.wasm!_PyEval_Vector 288: 0xcc8da - python.wasm!_PyFunction_Vectorcall 289: 0xcc4d4 - python.wasm!_PyVectorcall_Call 290: 0xcc68d - python.wasm!_PyObject_Call 291: 0xcc7ef - python.wasm!PyObject_Call 292: 0x36b177 - python.wasm!pymain_run_module 293: 0x36aaf7 - python.wasm!Py_RunMain 294: 0x36c1ed - python.wasm!pymain_main 295: 0x36c296 - python.wasm!Py_BytesMain 296: 0x5e7f - python.wasm!main 297: 0x560359 - python.wasm!__main_void 298: 0x5e58 - python.wasm!_start note: using the `WASMTIME_BACKTRACE_DETAILS=1` environment variable may show more debugging information 2: wasm trap: call stack exhausted 

[Yhg1s]

Even with this change, bytecode produced still differs between 3.13.3 and 3.13 head. (Without, I might add, the bytecode magic changing, which is both correct and incorrect: the bytecode produced shouldn't differ if the bytecode is the same, and the bytecode isn't allowed to change in bug fix releases.) So this is definitely not enough to fix the problems in 3.13.4.

[gpshead]

closing in favor of the revert that happened.