pdn: check for zero area

gadfort · gadfort · commit f517bc49ef84 · 2025-10-12T11:30:06.000-04:00
Signed-off-by: Peter Gadfort &lt;peter.gadfort@gmail.com&gt;
diff --git a/src/pdn/src/grid.cpp b/src/pdn/src/grid.cpp
@@ -1749,6 +1749,12 @@ void InstanceGrid::checkSetup() const
                 inst_->getName());
           }
         }
+
+        if (total_pin_area == 0) {
+          // should not occur, implies all blocked pins have 0 area
+          continue;
+        }
+
         const float pct
             = 100 * static_cast<float>(total_overlap) / total_pin_area;
         getLogger()->warn(utl::PDN,

Original file line number	Diff line number	Diff line change
`@@ -1749,6 +1749,12 @@ void InstanceGrid::checkSetup() const`
`1749`	`1749`	`inst_->getName());`
`1750`	`1750`	`}`
`1751`	`1751`	`}`
	`1752`	`+`
	`1753`	`+ if (total_pin_area == 0) {`
	`1754`	`+ // should not occur, implies all blocked pins have 0 area`
	`1755`	`+ continue;`
	`1756`	`+ }`
	`1757`	`+`
`1752`	`1758`	`const float pct`
`1753`	`1759`	`= 100 * static_cast<float>(total_overlap) / total_pin_area;`
`1754`	`1760`	`getLogger()->warn(utl::PDN,`