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-rw-r--r--src/ports/SkMutex_pthread.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/ports/SkMutex_pthread.h b/src/ports/SkMutex_pthread.h
index 1904140c4c..662e549f12 100644
--- a/src/ports/SkMutex_pthread.h
+++ b/src/ports/SkMutex_pthread.h
@@ -19,6 +19,7 @@
// a corresponding static finalizer).
struct SkBaseMutex {
void acquire() {
+ SkASSERT(fOwner != pthread_self()); // SkMutex is not re-entrant
pthread_mutex_lock(&fMutex);
SkDEBUGCODE(fOwner = pthread_self();)
}