1 files changed, 6 insertions, 2 deletions
diff --git a/PROBLEMS b/PROBLEMS
index ee400593e..f679c3a37 100644
--- a/PROBLEMS
+++ b/PROBLEMS
@@ -613,8 +613,12 @@ Compilation Problems
     y.tab.c: In function `int yyparse()':
     y.tab.c: `size_t' undeclared in namespace `std'
 
-This is a bug in bison 1.32.  Don't use this version.  1.28 or 1.33 works
-fine.  Alternatively, use yacc or byacc.
+* bison reports conflicts (either on stderr or in the `pic.output'
+  file) while processing `pic.y', and the produced pic binary doesn't
+  work at all.
+
+You need bison version 1.875b or greater.  Alternatively, use yacc or
+byacc.
 
 ----------------------------------------------------------------------