gh-67565: Remove redundant C-contiguity checks (GH-105521)

Co-authored-by: Stefan Krah <skrah@bytereef.org>

4 files changed, 4 insertions, 44 deletions

diff --git a/Modules/_io/clinic/bufferedio.c.h b/Modules/_io/clinic/bufferedio.c.h
index 83c97ae..f6ac269 100644
--- a/Modules/_io/clinic/bufferedio.c.h
+++ b/Modules/_io/clinic/bufferedio.c.h
@@ -30,10 +30,6 @@ _io__BufferedIOBase_readinto(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("readinto", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io__BufferedIOBase_readinto_impl(self, &buffer);
 
 exit:
@@ -66,10 +62,6 @@ _io__BufferedIOBase_readinto1(PyObject *self, PyObject *arg)
         _PyArg_BadArgument("readinto1", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto1", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io__BufferedIOBase_readinto1_impl(self, &buffer);
 
 exit:
@@ -592,10 +584,6 @@ _io__Buffered_readinto(buffered *self, PyObject *arg)
         _PyArg_BadArgument("readinto", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io__Buffered_readinto_impl(self, &buffer);
 
 exit:
@@ -628,10 +616,6 @@ _io__Buffered_readinto1(buffered *self, PyObject *arg)
         _PyArg_BadArgument("readinto1", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto1", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io__Buffered_readinto1_impl(self, &buffer);
 
 exit:
@@ -945,10 +929,6 @@ _io_BufferedWriter_write(buffered *self, PyObject *arg)
     if (PyObject_GetBuffer(arg, &buffer, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("write", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io_BufferedWriter_write_impl(self, &buffer);
 
 exit:
@@ -1095,4 +1075,4 @@ skip_optional_pos:
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=b83f65fad0cd5fb6 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=090e70253e35fc22 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/bytesio.c.h b/Modules/_io/clinic/bytesio.c.h
index cf16335..37023e4 100644
--- a/Modules/_io/clinic/bytesio.c.h
+++ b/Modules/_io/clinic/bytesio.c.h
@@ -332,10 +332,6 @@ _io_BytesIO_readinto(bytesio *self, PyObject *arg)
         _PyArg_BadArgument("readinto", "argument", "read-write bytes-like object", arg);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument", "contiguous buffer", arg);
-        goto exit;
-    }
     return_value = _io_BytesIO_readinto_impl(self, &buffer);
 
 exit:
@@ -538,4 +534,4 @@ skip_optional_pos:
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=27333725edff70a0 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=2be0e05a8871b7e2 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/fileio.c.h b/Modules/_io/clinic/fileio.c.h
index 748bc9c..cf3ba28 100644
--- a/Modules/_io/clinic/fileio.c.h
+++ b/Modules/_io/clinic/fileio.c.h
@@ -249,10 +249,6 @@ _io_FileIO_readinto(fileio *self, PyTypeObject *cls, PyObject *const *args, Py_s
         _PyArg_BadArgument("readinto", "argument 1", "read-write bytes-like object", args[0]);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io_FileIO_readinto_impl(self, cls, &buffer);
 
 exit:
@@ -381,10 +377,6 @@ _io_FileIO_write(fileio *self, PyTypeObject *cls, PyObject *const *args, Py_ssiz
     if (PyObject_GetBuffer(args[0], &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&b, 'C')) {
-        _PyArg_BadArgument("write", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io_FileIO_write_impl(self, cls, &b);
 
 exit:
@@ -536,4 +528,4 @@ _io_FileIO_isatty(fileio *self, PyObject *Py_UNUSED(ignored))
 #ifndef _IO_FILEIO_TRUNCATE_METHODDEF
     #define _IO_FILEIO_TRUNCATE_METHODDEF
 #endif /* !defined(_IO_FILEIO_TRUNCATE_METHODDEF) */
-/*[clinic end generated code: output=10838003d15e7b3d input=a9049054013a1b77]*/
+/*[clinic end generated code: output=1c0f4a36f76b0c6a input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/winconsoleio.c.h b/Modules/_io/clinic/winconsoleio.c.h
index f40786a..6cab295 100644
--- a/Modules/_io/clinic/winconsoleio.c.h
+++ b/Modules/_io/clinic/winconsoleio.c.h
@@ -247,10 +247,6 @@ _io__WindowsConsoleIO_readinto(winconsoleio *self, PyTypeObject *cls, PyObject *
         _PyArg_BadArgument("readinto", "argument 1", "read-write bytes-like object", args[0]);
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&buffer, 'C')) {
-        _PyArg_BadArgument("readinto", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io__WindowsConsoleIO_readinto_impl(self, cls, &buffer);
 
 exit:
@@ -391,10 +387,6 @@ _io__WindowsConsoleIO_write(winconsoleio *self, PyTypeObject *cls, PyObject *con
     if (PyObject_GetBuffer(args[0], &b, PyBUF_SIMPLE) != 0) {
         goto exit;
     }
-    if (!PyBuffer_IsContiguous(&b, 'C')) {
-        _PyArg_BadArgument("write", "argument 1", "contiguous buffer", args[0]);
-        goto exit;
-    }
     return_value = _io__WindowsConsoleIO_write_impl(self, cls, &b);
 
 exit:
@@ -465,4 +457,4 @@ _io__WindowsConsoleIO_isatty(winconsoleio *self, PyObject *Py_UNUSED(ignored))
 #ifndef _IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF
     #define _IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF
 #endif /* !defined(_IO__WINDOWSCONSOLEIO_ISATTY_METHODDEF) */
-/*[clinic end generated code: output=2debef253fa1ab90 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=04108fc26b187386 input=a9049054013a1b77]*/