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src/libsecp256k1/rng.h: fix C467 warning on MSVC compilers.

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This commit is contained in:
Henrik Hautakoski 2023-05-31 10:48:52 +02:00
parent e0d0bcb0cb
commit 7e9bd41a83
1 changed files with 5 additions and 0 deletions
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5
src/libsecp256k1/rng.h
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@ -42,12 +42,17 @@
static int fill_random(unsigned char* data, size_t size) {
#if defined(_WIN32)
/* Disable C4267 Warning (dataloss when casting variable to smaller size) temporarily */
#pragma warning( push )
#pragma warning( disable: 4267 )
NTSTATUS res = BCryptGenRandom(NULL, data, size, BCRYPT_USE_SYSTEM_PREFERRED_RNG);
#pragma warning( pop )
if (res != STATUS_SUCCESS || size > ULONG_MAX) {
return 0;
} else {
return 1;
}
#elif defined(__linux__) || defined(__FreeBSD__)
/* If `getrandom(2)` is not available you should fallback to /dev/urandom */
ssize_t res = getrandom(data, size, 0);