kou commented on PR #50033:
URL: https://github.com/apache/arrow/pull/50033#issuecomment-4537031844
Wow! Good catch!
How about just disabling mold on Ubuntu 24.04?
```diff
diff --git a/ci/docker/ubuntu-24.04-cpp.dockerfile
b/ci/docker/ubuntu-24.04-cpp.dockerfile
index 074301b472..2cfc8be6ff 100644
--- a/ci/docker/ubuntu-24.04-cpp.dockerfile
+++ b/ci/docker/ubuntu-24.04-cpp.dockerfile
@@ -176,6 +176,11 @@ RUN /arrow/ci/scripts/install_sccache.sh
unknown-linux-musl /usr/local/bin
# provided by the distribution:
# - Abseil is old and we require a version that has CRC32C
# - opentelemetry-cpp-dev is not packaged
+#
+# Don't use mold 2.30.0 on Ubuntu 24.04. It has a bug in section placement:
+# - https://github.com/rui314/mold/issues/1247
+# - https://github.com/apache/arrow/issues/49767
+# - https://github.com/apache/arrow/pull/50033
ENV absl_SOURCE=BUNDLED \
ARROW_ACERO=ON \
ARROW_AZURE=ON \
@@ -197,7 +202,7 @@ ENV absl_SOURCE=BUNDLED \
ARROW_SUBSTRAIT=ON \
ARROW_USE_ASAN=OFF \
ARROW_USE_CCACHE=ON \
- ARROW_USE_MOLD=ON \
+ ARROW_USE_MOLD=OFF \
ARROW_USE_UBSAN=OFF \
ARROW_WITH_BROTLI=ON \
ARROW_WITH_BZ2=ON \
```
(We may want to measure build times with/without mold. If mold reduces much
build time, we may want to install recent mold manually.)
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