1 files changed, 8 insertions, 0 deletions
diff --git a/tccgen.c b/tccgen.c
index 36a1879..9339b5f 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -452,6 +452,14 @@ ST_FUNC void vswap(void)
 {
     SValue tmp;
 
+    /* cannot let cpu flags if other instruction are generated. Also
+       avoid leaving VT_JMP anywhere except on the top of the stack
+       because it would complicate the code generator. */
+    if (vtop >= vstack) {
+        int v = vtop->r & VT_VALMASK;
+        if (v == VT_CMP || (v & ~1) == VT_JMP)
+            gv(RC_INT);
+    }
     tmp = vtop[0];
     vtop[0] = vtop[-1];
     vtop[-1] = tmp;