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Fix a mis-parse of NPY v2.0 and 3.0 headers #77

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Fix a mis-parse of NPY v2.0 and 3.0 headers #77

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3392473
Fix a mis-parse of NPY v2.0 and 3.0 headers
nmcclatchey Aug 17, 2020
4f8c6e4
Bugfix: `header` string was oversized
nmcclatchey Sep 3, 2025
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9 changes: 7 additions & 2 deletions cnpy.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -63,8 +63,13 @@ void cnpy::parse_npy_header(unsigned char* buffer,size_t& word_size, std::vector
//std::string magic_string(buffer,6);
uint8_t major_version = *reinterpret_cast<uint8_t*>(buffer+6);
uint8_t minor_version = *reinterpret_cast<uint8_t*>(buffer+7);
uint16_t header_len = *reinterpret_cast<uint16_t*>(buffer+8);
std::string header(reinterpret_cast<char*>(buffer+9),header_len);
bool extended_header = (major_version > 1);
uint32_t header_len;
if (extended_header)
header_len = *reinterpret_cast<uint32_t*>(buffer+8);
else
header_len = *reinterpret_cast<uint16_t*>(buffer+8);
std::string header(reinterpret_cast<char*>(buffer+(extended_header ? 12 : 10)),header_len);

size_t loc1, loc2;

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