Christian Hesse pushed to branch main at Arch Linux / Packaging / Packages /
mysql-workbench
Commits:
93a9862f by Niels P at 2026-08-13T19:06:32+02:00
Add -fsigned-char on aarch64 (MySQL char signedness assumption)
MySQL source code assumes char is signed in multiple locations,
particularly in library/sql.parser/source/ctype-utf8.cpp where char
arrays are initialized with -1 values. On aarch64 where char is
unsigned by default, this causes narrowing conversion errors.
This is a long-standing upstream MySQL issue, acknowledged but unfixed:
- Bug #60910 (2011): 'Some MySQL source code assumes char is signed'
MySQL's own recommendation: 'When we added -fsigned-char, the
problems cleared up.'
- Bug #78950 (2015): 'narrowing conversion of -1 from int to char'
- Bug #87543 (2017): 'dd_sdi-t.cc assumes char to be signed' on AArch64
Adding -fsigned-char for aarch64 matches x86 behavior and is the
upstream-recommended workaround.
Tested on aarch64 (Graviton 4, GCC 16.3.0).
- - - - -
1 changed file:
- PKGBUILD
Changes:
=====================================
PKGBUILD
=====================================
@@ -165,6 +165,10 @@ build() {
echo "Install mysql-connector-c++..."
make DESTDIR="${srcdir}/install-bundle/" install
+ # MySQL source assumes char is signed (Bug #60910, #78950, #87543 —
unfixed since 2011).
+ # On aarch64, char is unsigned by default, causing narrowing conversion
errors in ctype-utf8.cpp.
+ CXXFLAGS+=" -fsigned-char"
+
# Build MySQL Workbench itself with bundled libs
mkdir "${srcdir}/mysql-workbench-community-${pkgver}-src-build"
cd "${srcdir}/mysql-workbench-community-${pkgver}-src-build"
View it on GitLab:
https://gitlab.archlinux.org/archlinux/packaging/packages/mysql-workbench/-/commit/93a9862ff01674cfc840a6f52127558751ad2c1e
--
View it on GitLab:
https://gitlab.archlinux.org/archlinux/packaging/packages/mysql-workbench/-/commit/93a9862ff01674cfc840a6f52127558751ad2c1e
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