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authorPaolo Bonzini <pbonzini@redhat.com>2019-02-04 16:40:18 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2019-02-05 16:50:21 +0100
commit5ed76a4c63db9295c6c5d67895925810050d4a46 (patch)
treef5f95ef0d7804f1a93c6817e6853790cc82be3e2 /include
parent568534986486e619258c6ff36b4029372624238a (diff)
queue: fix QTAILQ_FOREACH_REVERSE_SAFE
The iteration was stopping as soon as prev_var was set to NULL, and therefore it skipped the first element. Fortunately, or unfortunately, we have only one use of QTAILQ_FOREACH_REVERSE_SAFE. Thus this only showed up as incorrect register preferences on the very first translation block that was compiled. Reported-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Emilio G. Cota <cota@braap.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/qemu/queue.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/qemu/queue.h b/include/qemu/queue.h
index 1f8e219412..0379bd8fdb 100644
--- a/include/qemu/queue.h
+++ b/include/qemu/queue.h
@@ -439,7 +439,7 @@ union { \
#define QTAILQ_FOREACH_REVERSE_SAFE(var, head, field, prev_var) \
for ((var) = QTAILQ_LAST(head); \
- (var) && ((prev_var) = QTAILQ_PREV(var, field)); \
+ (var) && ((prev_var) = QTAILQ_PREV(var, field), 1); \
(var) = (prev_var))
/*