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14 lines
470 B
Diff
14 lines
470 B
Diff
diff --git a/lib/ngtcp2_ringbuf.c b/lib/ngtcp2_ringbuf.c
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index c381c23..73d9230 100644
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--- a/lib/ngtcp2_ringbuf.c
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+++ b/lib/ngtcp2_ringbuf.c
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@@ -32,7 +32,7 @@
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#include "ngtcp2_macro.h"
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#if defined(_MSC_VER) && !defined(__clang__) && \
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- (defined(_M_ARM) || defined(_M_ARM64))
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+ (defined(_M_ARM) || (defined(_M_ARM64) && _MSC_VER < 1941))
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static unsigned int __popcnt(unsigned int x) {
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unsigned int c = 0;
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for (; x; ++c) {
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