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authorChristian Krinitsin <mail@krinitsin.com>2025-06-01 21:35:14 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-06-01 21:35:14 +0200
commit3e4c5a6261770bced301b5e74233e7866166ea5b (patch)
tree9379fddaba693ef8a045da06efee8529baa5f6f4 /results/scraper/gitlab/issues_text/target_missing/host_s390
parente5634e2806195bee44407853c4bf8776f7abfa4f (diff)
downloademulator-bug-study-3e4c5a6261770bced301b5e74233e7866166ea5b.tar.gz
emulator-bug-study-3e4c5a6261770bced301b5e74233e7866166ea5b.zip
clean up repository
Diffstat (limited to 'results/scraper/gitlab/issues_text/target_missing/host_s390')
-rw-r--r--results/scraper/gitlab/issues_text/target_missing/host_s390/accel_missing/193424
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diff --git a/results/scraper/gitlab/issues_text/target_missing/host_s390/accel_missing/1934 b/results/scraper/gitlab/issues_text/target_missing/host_s390/accel_missing/1934
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+++ b/results/scraper/gitlab/issues_text/target_missing/host_s390/accel_missing/1934
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+Build failure on s390x with Clang 17 due to int128 alignment used in `__sync_` operations
+Description of problem:
+We experienced this downstream, but filing this here since the code still seems to be the same in git.
+
+https://reviews.llvm.org/D143813 introduced this warning since, according to the description, `__int128`
+needs to be 8-byte aligned on s390 but the code in `host/include/generic/host/atomic128-ldst.h` unconditionally uses 16-byte alignment.
+
+The output is:
+
+```
+In file included from ../accel/tcg/cputlb.c:32:
+In file included from /builddir/build/BUILD/qemu-8.1.0/include/exec/helper-proto-common.h:10:
+In file included from /builddir/build/BUILD/qemu-8.1.0/include/qemu/atomic128.h:62:
+/builddir/build/BUILD/qemu-8.1.0/host/include/generic/host/atomic128-ldst.h:68:15: error: __sync builtin operation MUST have natural alignment (consider using __atomic). [-Werror,-Wsync-alignment]
+ 68 | } while (!__sync_bool_compare_and_swap_16(ptr_align, old, new.i));
+ | ^
+In file included from ../accel/tcg/cputlb.c:32:
+In file included from /builddir/build/BUILD/qemu-8.1.0/include/exec/helper-proto-common.h:10:
+In file included from /builddir/build/BUILD/qemu-8.1.0/include/qemu/atomic128.h:61:
+/builddir/build/BUILD/qemu-8.1.0/host/include/generic/host/atomic128-cas.h:36:11: error: __sync builtin operation MUST have natural alignment (consider using __atomic). [-Werror,-Wsync-alignment]
+ 36 | r.i = __sync_val_compare_and_swap_16(ptr_align, c.i, n.i);
+ | ^
+2 errors generated.
+```