Package: rust-leptonica-sys
The autopkgtests for rust-leptonica-sys are failing on i386 due to a bindgen
layout test failure. Doing some digging it seems the type involved is a
system type and appears to be built-in to gcc/clang rather than defined
in a header.
This issue has been around for a while, but the new version of bindgen
changed the way layout tests work. This means that while with the old
bindgen this only caused an autopkgtest failure in rust-leptonica-sys,
with the new version it also causes autopkgtest failures in the reverse
dependencies of rust-leptonica-sys. This is blocking the migration of
the new version of bindgen to testing.
I've filed a bug report about this with bindgen, but in the meantime
it seems the most sensible thing to do is to blocklist the type in
question. I've attatched a patch for leptonica-sys that does that
and I have tested that with this patch applied I can successfully
run the autopkgtests for rust-leptonica-sys, rust-leptonica-plumbing,
rust-tesseract-sys and rust-tesseract-plumbing.
diff -Nru rust-leptonica-sys-0.4.8/debian/changelog
rust-leptonica-sys-0.4.8/debian/changelog
--- rust-leptonica-sys-0.4.8/debian/changelog 2024-11-23 13:34:05.000000000
+0000
+++ rust-leptonica-sys-0.4.8/debian/changelog 2024-11-26 02:40:08.000000000
+0000
@@ -1,3 +1,11 @@
+rust-leptonica-sys (0.4.8-3.1) UNRELEASED; urgency=medium
+
+ * Non-maintainer upload.
+ * Blocklist type max_align_t, it causes bindgen layout
+ test failures and is not used by leptonica.
+
+ -- Peter Michael Green <plugw...@debian.org> Tue, 26 Nov 2024 02:40:08 +0000
+
rust-leptonica-sys (0.4.8-3) unstable; urgency=medium
* autopkgtest-depend on dh-rust (not dh-cargo)
diff -Nru
rust-leptonica-sys-0.4.8/debian/patches/1002_blocklist_max_align_t.patch
rust-leptonica-sys-0.4.8/debian/patches/1002_blocklist_max_align_t.patch
--- rust-leptonica-sys-0.4.8/debian/patches/1002_blocklist_max_align_t.patch
1970-01-01 00:00:00.000000000 +0000
+++ rust-leptonica-sys-0.4.8/debian/patches/1002_blocklist_max_align_t.patch
2024-11-26 02:37:12.000000000 +0000
@@ -0,0 +1,19 @@
+Description: blacklist max_align_t
+ max_align_t seems to be a built-in type in clang that is not handled
+ correctly by bindgen, leading to failure in bindgen layout tests.
+
+ This type does not appear to be used by leptonica, so we just tell
+ bingen to blocklist it.
+Author: Peter Michael Green <plugw...@debian.org>
+
+--- rust-leptonica-sys-0.4.8.orig/build.rs
++++ rust-leptonica-sys-0.4.8/build.rs
+@@ -84,6 +84,8 @@ fn main() {
+ bindings = bindings.clang_arg(format!("-I{}", include_path));
+ }
+
++ bindings = bindings.blocklist_type("max_align_t");
++
+ let bindings = bindings
+ .parse_callbacks(Box::new(bindgen::CargoCallbacks))
+ .generate()
diff -Nru rust-leptonica-sys-0.4.8/debian/patches/series
rust-leptonica-sys-0.4.8/debian/patches/series
--- rust-leptonica-sys-0.4.8/debian/patches/series 2023-09-05
04:46:14.000000000 +0000
+++ rust-leptonica-sys-0.4.8/debian/patches/series 2024-11-26
02:37:21.000000000 +0000
@@ -1,2 +1,3 @@
1001_bindgen.patch
2002_no_windows.patch
+1002_blocklist_max_align_t.patch
