Add better panic message in getSRTInfo (Trac #1973)

diff --git a/compiler/codeGen/CgUtils.hs b/compiler/codeGen/CgUtils.hs
index 886a36a..13add6c 100644 (file)
--- a/compiler/codeGen/CgUtils.hs
+++ b/compiler/codeGen/CgUtils.hs
@@ -994,6 +994,7 @@ getSRTInfo = do
     -- TODO: Should we panic in this case?
     -- Someone obviously thinks there should be an SRT
     NoSRT -> return NoC_SRT
+    SRTEntries {} -> panic "getSRTInfo: SRTEntries.  Perhaps you forgot to run SimplStg?"
     SRT off len bmp
       | len > hALF_WORD_SIZE_IN_BITS || bmp == [fromIntegral srt_escape]
       -> do id <- newUnique