diff options
Diffstat (limited to 'runtime/loc2c-runtime.h')
| -rw-r--r-- | runtime/loc2c-runtime.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/runtime/loc2c-runtime.h b/runtime/loc2c-runtime.h index 4674e399..7ea1b1e4 100644 --- a/runtime/loc2c-runtime.h +++ b/runtime/loc2c-runtime.h @@ -623,8 +623,26 @@ for (_len = (maxbytes), _addr = (uintptr_t)(addr); \ _len > 1 && (_c = deref (1, _addr)) != '\0'; \ --_len, ++_addr) \ - *_d++ = _c; \ - *_d = '\0'; \ + if (_d) \ + *_d++ = _c; \ + if (_d) \ + *_d = '\0'; \ + (dst); \ + }) + +#define deref_buffer(dst, addr, numbytes) \ + ({ \ + uintptr_t _addr; \ + size_t _len; \ + unsigned char _c; \ + char *_d = (dst); \ + for (_len = (numbytes), _addr = (uintptr_t)(addr); \ + _len >= 1; \ + --_len, ++_addr) { \ + _c = deref (1, _addr); \ + if (_d) \ + *_d++ = _c; \ + } \ (dst); \ }) |