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GeezerVison is showing github.com — cpython/Programs/python.c at 3.6 · python/cpython

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python.c

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/* Minimal main program -- everything is loaded from the library */
#include "Python.h"
#include <locale.h>
#ifdef __FreeBSD__
#include <fenv.h>
#endif
#ifdef MS_WINDOWS
int
wmain(int argc, wchar_t **argv)
{
return Py_Main(argc, argv);
}
#else
int
main(int argc, char **argv)
{
wchar_t **argv_copy;
/* We need a second copy, as Python might modify the first one. */
wchar_t **argv_copy2;
int i, res;
char *oldloc;
/* Force malloc() allocator to bootstrap Python */
(void)_PyMem_SetupAllocators("malloc");
argv_copy = (wchar_t **)PyMem_RawMalloc(sizeof(wchar_t*) * (argc+1));
argv_copy2 = (wchar_t **)PyMem_RawMalloc(sizeof(wchar_t*) * (argc+1));
if (!argv_copy || !argv_copy2) {
fprintf(stderr, "out of memory\n");
return 1;
}
/* 754 requires that FP exceptions run in "no stop" mode by default,
* and until C vendors implement C99's ways to control FP exceptions,
* Python requires non-stop mode. Alas, some platforms enable FP
* exceptions by default. Here we disable them.
*/
#ifdef __FreeBSD__
fedisableexcept(FE_OVERFLOW);
#endif
oldloc = _PyMem_RawStrdup(setlocale(LC_ALL, NULL));
if (!oldloc) {
fprintf(stderr, "out of memory\n");
return 1;
}
setlocale(LC_ALL, "");
for (i = 0; i < argc; i++) {
argv_copy[i] = Py_DecodeLocale(argv[i], NULL);
if (!argv_copy[i]) {
PyMem_RawFree(oldloc);
fprintf(stderr, "Fatal Python error: "
"unable to decode the command line argument #%i\n",
i + 1);
return 1;
}
argv_copy2[i] = argv_copy[i];
}
argv_copy2[argc] = argv_copy[argc] = NULL;
setlocale(LC_ALL, oldloc);
PyMem_RawFree(oldloc);
res = Py_Main(argc, argv_copy);
/* Force again malloc() allocator to release memory blocks allocated
before Py_Main() */
(void)_PyMem_SetupAllocators("malloc");
for (i = 0; i < argc; i++) {
PyMem_RawFree(argv_copy2[i]);
}
PyMem_RawFree(argv_copy);
PyMem_RawFree(argv_copy2);
return res;
}
#endif
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