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bpo-38506: Fix the Windows py.exe launcher's misordering of 3.10 (GH-18307)

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Zackery Spytz 2020-11-16 14:32:35 -07:00 committed by GitHub
parent c26d5916d6
commit f62dad16b8
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2 changed files with 17 additions and 5 deletions
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2
Misc/NEWS.d/next/Windows/2020-11-15-23-01-14.bpo-38506.hhdnuP.rst Normal file
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@ -0,0 +1,2 @@
The Windows launcher now properly handles Python 3.10 when listing installed
Python versions.

20
PC/launcher.c
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@ -425,11 +425,21 @@ compare_pythons(const void * p1, const void * p2)
INSTALLED_PYTHON * ip1 = (INSTALLED_PYTHON *) p1;
INSTALLED_PYTHON * ip2 = (INSTALLED_PYTHON *) p2;
/* note reverse sorting on version */
int result = wcscmp(ip2->version, ip1->version);
if (result == 0)
result = ip2->bits - ip1->bits; /* 64 before 32 */
return result;
int result = CompareStringW(LOCALE_INVARIANT, SORT_DIGITSASNUMBERS,
ip2->version, -1, ip1->version, -1);
switch (result) {
case 0:
error(0, L"CompareStringW failed");
return 0;
case CSTR_LESS_THAN:
return -1;
case CSTR_EQUAL:
return ip2->bits - ip1->bits; /* 64 before 32 */
case CSTR_GREATER_THAN:
return 1;
default:
return 0; // This should never be reached.
}
}
static void