Use test in pipe_tasks's testProcessCcd.py to fix the hdu handling

The BackgroundList code needs a serious rewrite!
lsst · Apr 4, 2017 · 934d455 · 934d455
1 parent 806b744
commit 934d455
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/python/lsst/afw/math/backgroundList.py b/python/lsst/afw/math/backgroundList.py
@@ -152,7 +152,12 @@ def readFits(fileName, hdu=0, flags=0):
 
         self = BackgroundList()
 
-        hdu -= 1  # we want to start at 0 (post RFC-304), but are about to increment
+        INT_MIN = -(1 << 31)
+        if hdu == INT_MIN:
+            hdu = -1
+        else:
+            hdu -= 1  # we want to start at 0 (post RFC-304), but are about to increment
+
         while True:
             hdu += 1