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Fix sign of bounds check.

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This commit is contained in:
Thomas Harte 2024-12-02 15:27:03 -05:00
parent c0ce62ed2b
commit 09e2ef334b
1 changed files with 2 additions and 2 deletions
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4
Analyser/Static/Commodore/File.cpp
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@ -23,7 +23,7 @@ bool Analyser::Static::Commodore::File::is_basic() {
// ... null-terminated code ... // ... null-terminated code ...
// (with a next line address of 0000 indicating end of program) // (with a next line address of 0000 indicating end of program)
while(1) { while(1) {
if(size_t(line_address - starting_address) >= data.size() + 2) break; if(size_t(line_address - starting_address) >= data.size() - 2) break;
uint16_t next_line_address = data[line_address - starting_address]; uint16_t next_line_address = data[line_address - starting_address];
next_line_address |= data[line_address - starting_address + 1] << 8; next_line_address |= data[line_address - starting_address + 1] << 8;
@ -33,7 +33,7 @@ bool Analyser::Static::Commodore::File::is_basic() {
} }
if(next_line_address < line_address + 5) break; if(next_line_address < line_address + 5) break;
if(size_t(line_address - starting_address) >= data.size() + 5) break; if(size_t(line_address - starting_address) >= data.size() - 5) break;
uint16_t next_line_number = data[line_address - starting_address + 2]; uint16_t next_line_number = data[line_address - starting_address + 2];
next_line_number |= data[line_address - starting_address + 3] << 8; next_line_number |= data[line_address - starting_address + 3] << 8;