diff options
| -rw-r--r-- | src/libstore/build.cc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/libstore/build.cc b/src/libstore/build.cc index 60b0a531f..d2a270259 100644 --- a/src/libstore/build.cc +++ b/src/libstore/build.cc @@ -3835,6 +3835,9 @@ void Worker::waitForInput() int fdMax = 0; for (auto & i : children) { for (auto & j : i.fds) { + if (j >= FD_SETSIZE) { + throw BuildError("reached FD_SETSIZE limit"); + } FD_SET(j, &fds); if (j >= fdMax) fdMax = j + 1; } |