mirror of
https://github.com/mirkobrombin/raven.git
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Raymond Bennett
040ad4650b
A counted source maps into an exactly sized buffer without touching the character after it; a terminated one counts and writes its zero, and a buffer one short fails with ERROR_INSUFFICIENT_BUFFER, in the wide and ANSI forms. Assisted-by: Claude Code:claude-opus-5-5 AI-Scope: the test client and its registration (cherry picked from commit 4d918642f7b6282e83fb86783fca02212675ce75)
32 lines
1.5 KiB
C
32 lines
1.5 KiB
C
#include <windows.h>
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// LCMapString's lengths, as CPython's ntpath.normcase relies on them: a source given with its length maps to that many characters
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// and nothing is written after them (CPython sizes the buffer from the first call exactly); a source ended by a zero maps, counts
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// and writes the zero too, and a buffer without room for it fails with ERROR_INSUFFICIENT_BUFFER. Returns 0, or the number of the
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// check that failed.
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int raven_entry(void)
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{
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static WCHAR wide[8];
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static char narrow[8];
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if (LCMapStringEx(LOCALE_NAME_INVARIANT, LCMAP_LOWERCASE, L"ABC", 3, NULL, 0, NULL, NULL, 0) != 3)
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return 1;
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wide[3] = 0x7777;
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if (LCMapStringEx(LOCALE_NAME_INVARIANT, LCMAP_LOWERCASE, L"ABC", 3, wide, 3, NULL, NULL, 0) != 3 || wide[0] != L'a' ||
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wide[2] != L'c' || wide[3] != 0x7777)
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return 2;
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if (LCMapStringW(LOCALE_INVARIANT, LCMAP_UPPERCASE, L"abc", -1, NULL, 0) != 4)
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return 3;
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SetLastError(0);
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if (LCMapStringW(LOCALE_INVARIANT, LCMAP_UPPERCASE, L"abc", -1, wide, 3) != 0 || GetLastError() != ERROR_INSUFFICIENT_BUFFER)
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return 4;
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if (LCMapStringW(LOCALE_INVARIANT, LCMAP_UPPERCASE, L"abc", -1, wide, 4) != 4 || wide[0] != L'A' || wide[3] != 0)
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return 5;
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narrow[3] = 0x77;
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if (LCMapStringA(LOCALE_INVARIANT, LCMAP_UPPERCASE, "abc", 3, narrow, 3) != 3 || narrow[0] != 'A' || narrow[3] != 0x77)
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return 6;
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if (LCMapStringA(LOCALE_INVARIANT, LCMAP_UPPERCASE, "abc", -1, NULL, 0) != 4 ||
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LCMapStringA(LOCALE_INVARIANT, LCMAP_UPPERCASE, "abc", -1, narrow, 4) != 4 || narrow[3] != 0)
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return 7;
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return 0;
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}
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