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liberty: Fix handling of non-ascii characters

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Use an `unsigned char` buffer to ensure characters cast to an `int` are
in the range 0 <= c <= 255.
This commit is contained in:
Jannis Harder 2025-04-16 18:52:49 +02:00
parent ecf9c9f0cf
commit 5101b9fcba
2 changed files with 3 additions and 3 deletions
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2
passes/techmap/libparse.cc
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@ -75,7 +75,7 @@ bool LibertyInputStream::extend_buffer_once()
buffer.resize(buf_end + chunk_size);
}
size_t read_size = f.rdbuf()->sgetn(buffer.data() + buf_end, chunk_size);
size_t read_size = f.rdbuf()->sgetn((char *)buffer.data() + buf_end, chunk_size);
buf_end += read_size;
if (read_size < chunk_size)
eof = true;

4
passes/techmap/libparse.h
View file

@ -92,7 +92,7 @@ namespace Yosys
class LibertyInputStream {
std::istream &f;
std::vector<char> buffer;
std::vector<unsigned char> buffer;
size_t buf_pos = 0;
size_t buf_end = 0;
bool eof = false;
@ -107,7 +107,7 @@ namespace Yosys
LibertyInputStream(std::istream &f) : f(f) {}
size_t buffered_size() { return buf_end - buf_pos; }
const char *buffered_data() { return buffer.data() + buf_pos; }
const unsigned char *buffered_data() { return buffer.data() + buf_pos; }
int get() {
if (buf_pos == buf_end)