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Switch sprintf to snprintf #3363

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Switch sprintf to snprintf #3363

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2 changes: 1 addition & 1 deletion faiss/impl/io.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -267,7 +267,7 @@ std::string fourcc_inv_printable(uint32_t x) {
str += c;
} else {
char buf[10];
sprintf(buf, "\\x%02x", c);
snprintf(buf, sizeof(buf), "\\x%02x", c);
str += buf;
}
}
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9 changes: 8 additions & 1 deletion faiss/utils/simdlib_neon.h
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Expand Up @@ -168,9 +168,16 @@ static inline std::string elements_to_string(const char* fmt, const S& simd) {
simd.store(bytes);
char res[1000], *ptr = res;
for (size_t i = 0; i < N; ++i) {
ptr += sprintf(ptr, fmt, bytes[i]);
int bytesWritten =
snprintf(ptr, sizeof(res) - (ptr - res), fmt, bytes[i]);
if (bytesWritten >= 0) {
ptr += bytesWritten;
} else {
break;
}
}
// strip last ,

ptr[-1] = 0;
return std::string(res);
}
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