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| author | Patric Stout <truebrain@openttd.org> | 2020-12-04 22:12:39 +0100 |
|---|---|---|
| committer | Patric Stout <github@truebrain.nl> | 2020-12-06 16:10:58 +0100 |
| commit | c98717cb4518d80ccccb2ae1677d0a394542f129 (patch) | |
| tree | a1c585edd2b1fa672de3fb4e88be8f8efb08f6c1 /src/rail_map.h | |
| parent | c558936ec3223f95677e182da1325717f8163ef6 (diff) | |
| download | openttd-c98717cb4518d80ccccb2ae1677d0a394542f129.tar.xz | |
Fix: do not add an offset to a nullptr
This is, by specs, undefined behaviour. See
https://reviews.llvm.org/D67122
In cases where this is done, optimizations done by LLVM can
generate code that causes crashes.
GetVariableAddress() had two (legit) ways this could happen:
- For SaveLoad set to global
- For SaveLoad set to SLE_VAR_NULL, where sld->address is always
a nullptr, and object could or could not be a nullptr.
Diffstat (limited to 'src/rail_map.h')
0 files changed, 0 insertions, 0 deletions