[PATCH] gitlab-ci: Use -fno-sanitize=function in the clang-user job

[Richard Henderson <richard.henderson@linaro.org>]

With -fsanitize=undefined, which implies -fsanitize=function,
clang will add a "type signature" before functions.
It accesses funcptr-8 and funcptr-4 to do so.

The generated TCG prologue is directly on a page boundary,
so these accesses segfault.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---

Does anyone know why we're using --extra-cflags for the clang-user
and clang-system jobs, as opposed to --enable-sanitizers?  It
certainly seems like regular users who use the normal configure
flag are going to run into this as well.

Anyway, this is why the clang-user job is failing at the momemnt.
I can only assume that changes to our docker file, or upstream
distro updates have pulled in a new compiler version, because this
wasn't failing in this way last week.


r~

---
 .gitlab-ci.d/buildtest.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitlab-ci.d/buildtest.yml b/.gitlab-ci.d/buildtest.yml
index e3a0758bd9..aa32782405 100644
--- a/.gitlab-ci.d/buildtest.yml
+++ b/.gitlab-ci.d/buildtest.yml
@@ -444,6 +444,7 @@ clang-user:
     CONFIGURE_ARGS: --cc=clang --cxx=clang++ --disable-system
       --target-list-exclude=alpha-linux-user,microblazeel-linux-user,aarch64_be-linux-user,i386-linux-user,m68k-linux-user,mipsn32el-linux-user,xtensaeb-linux-user
       --extra-cflags=-fsanitize=undefined --extra-cflags=-fno-sanitize-recover=undefined
+      --extra-cflags=-fno-sanitize=function
     MAKE_CHECK_ARGS: check-unit check-tcg
 
 # Set LD_JOBS=1 because this requires LTO and ld consumes a large amount of memory.
-- 
2.43.0