René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Compiler warnings in main / 3.11","articleBody":"# Bug report\r\n\r\nI'm getting several compiler warnings when compiling on Linux X86_64, wasm32-emscripten, and wasm32-wasi.\r\n\r\n# Your environment\r\n\r\n- x86_64-pc-linux-gnu with gcc\r\n- wasm32-emscripten with clang\r\n- wasm32-wasi with clang\r\n\r\n# warnings\r\n\r\n```\r\nObjects/typeobject.c:6805:34: warning: comparison of integers of different signs: 'Py_ssize_t' (aka 'long') and 'unsigned long' [-Wsign-compare]\r\n    else if (type-\u003etp_dictoffset \u003c sizeof(PyObject)) {\r\n```\r\nFix: cast sizeof to Py_ssize_t\r\n\r\n```\r\nObjects/typeobject.c:74:1: warning: unused function 'static_builtin_index_is_set' [-Wunused-function]\r\nstatic_builtin_index_is_set(PyTypeObject *self)\r\n^\r\n```\r\nFix: don't define the function if NDEBUG is set.\r\n\r\n```\r\nModules/_testcapi/heaptype.c:280:23: warning: unused variable 'class_ht' [-Wunused-variable]\r\n    PyHeapTypeObject *class_ht = (PyHeapTypeObject *)class;\r\nModules/_testcapi/heaptype.c:279:19: warning: unused variable 'class_tp' [-Wunused-variable]\r\n    PyTypeObject *class_tp = (PyTypeObject *)class;\r\n```\r\nFix: unset NDEBUG **before** including ``assert.h``.\r\n\r\n```\r\nPython/ceval_gil.h:136:13: warning: unused function 'recreate_gil' [-Wunused-function]\r\nstatic void recreate_gil(struct _gil_runtime_state *gil)\r\n```\r\nFix: only define function ifdef HAVE_FORK\r\n\r\n```\r\nPython/pytime.c:297:10: warning: implicit conversion from 'long long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conversion]\r\n    if (!_Py_InIntegralTypeRange(time_t, intpart)) {\r\n         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\r\nInclude/internal/pycore_pymath.h:72:45: note: expanded from macro '_Py_InIntegralTypeRange'\r\n    (_Py_IntegralTypeMin(type) \u003c= v \u0026\u0026 v \u003c= _Py_IntegralTypeMax(type))\r\n                                         ~~ ^~~~~~~~~~~~~~~~~~~~~~~~~\r\nInclude/internal/pycore_pymath.h:61:88: note: expanded from macro '_Py_IntegralTypeMax'\r\n    (_Py_IS_TYPE_SIGNED(type) ? (((((type)1 \u003c\u003c (sizeof(type)*CHAR_BIT - 2)) - 1) \u003c\u003c 1) + 1) : ~(type)0)\r\n```\r\nThe warning is coming from clang from WASI-SDK.\r\n\r\n```\r\nModules/expat/xmlparse.c:3107:9: warning: code will never be executed [-Wunreachable-code]\r\n        parser-\u003em_characterDataHandler(parser-\u003em_handlerArg, parser-\u003em_dataBuf,\r\n        ^~~~~~\r\nModules/expat/xmlparse.c:3106:16: note: silence by adding parentheses to mark code as explicitly dead\r\n      else if (0 \u0026\u0026 parser-\u003em_characterDataHandler)\r\n               ^\r\n               /* DISABLES CODE */ ( )\r\nModules/expat/xmlparse.c:4050:9: warning: code will never be executed [-Wunreachable-code]\r\n        parser-\u003em_characterDataHandler(parser-\u003em_handlerArg, parser-\u003em_dataBuf,\r\n        ^~~~~~\r\nModules/expat/xmlparse.c:4049:16: note: silence by adding parentheses to mark code as explicitly dead\r\n      else if (0 \u0026\u0026 parser-\u003em_characterDataHandler)\r\n               ^\r\n               /* DISABLES CODE */ ( )\r\nModules/expat/xmlparse.c:7681:11: warning: format specifies type 'int' but the argument has type 'ptrdiff_t' (aka 'long') [-Wformat]\r\n          bytesMore, (account == XML_ACCOUNT_DIRECT) ? \"DIR\" : \"EXP\",\r\n          ^~~~~~~~~\r\n3 warnings generated.\r\n```\r\nThe warnings are coming from clang from WASI-SDK. These look like issues in upstream expat code.","author":{"url":"https://github.com/tiran","@type":"Person","name":"tiran"},"datePublished":"2022-08-16T06:24:42.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/96017/cpython/issues/96017"}