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authorIlya Leoshkevich <iii@linux.ibm.com>2021-04-16 17:49:39 +0200
committerCornelia Huck <cohuck@redhat.com>2021-05-20 14:19:30 +0200
commit0b00b0c1e05b34904635cf1b5cfdd945d1a8475e (patch)
treec942c111acb61154762dab3c0084d4532a591031
parentf689befde664f917510e842660a69961faf8ba7b (diff)
downloadqemu-0b00b0c1e05b34904635cf1b5cfdd945d1a8475e.zip
accel/tcg: Assert that tb->size != 0 after translation
If arch-specific code generates a translation block of size 0, tb_gen_code() may generate a spurious exception. Add an assertion in order to catch such situations early. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Message-Id: <20210416154939.32404-5-iii@linux.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
-rw-r--r--accel/tcg/translate-all.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c
index fbf8fc630b..640ff6e3e7 100644
--- a/accel/tcg/translate-all.c
+++ b/accel/tcg/translate-all.c
@@ -1912,6 +1912,7 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
tcg_ctx->cpu = env_cpu(env);
gen_intermediate_code(cpu, tb, max_insns);
+ assert(tb->size != 0);
tcg_ctx->cpu = NULL;
max_insns = tb->icount;