diff options
Diffstat (limited to 'cpp/src/sfntly/data/writable_font_data.cc')
| -rw-r--r-- | cpp/src/sfntly/data/writable_font_data.cc | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/cpp/src/sfntly/data/writable_font_data.cc b/cpp/src/sfntly/data/writable_font_data.cc index 7f6f72f..073e9df 100644 --- a/cpp/src/sfntly/data/writable_font_data.cc +++ b/cpp/src/sfntly/data/writable_font_data.cc @@ -16,6 +16,9 @@ #include "sfntly/data/writable_font_data.h" +#include <algorithm> +#include <limits> + #include "sfntly/data/memory_byte_array.h" #include "sfntly/data/growable_memory_byte_array.h" @@ -165,7 +168,9 @@ void WritableFontData::CopyFrom(InputStream* is) { CALLER_ATTACH FontData* WritableFontData::Slice(int32_t offset, int32_t length) { - if (offset < 0 || offset + length > Size()) { + if (offset < 0 || length < 0 || + offset > std::numeric_limits<int32_t>::max() - length || + offset + length > Size()) { #if !defined (SFNTLY_NO_EXCEPTION) throw IndexOutOfBoundsException( "Attempt to bind data outside of its limits"); @@ -177,7 +182,7 @@ CALLER_ATTACH FontData* WritableFontData::Slice(int32_t offset, } CALLER_ATTACH FontData* WritableFontData::Slice(int32_t offset) { - if (offset > Size()) { + if (offset < 0 || offset > Size()) { #if !defined (SFNTLY_NO_EXCEPTION) throw IndexOutOfBoundsException( "Attempt to bind data outside of its limits"); |