CCP interacts poorly with -Wuninitialized in some cases by assuming a value
which stops us warning about it (false negatives). Inform users about this
infamous interaction.
gcc/ChangeLog:
PR tree-optimization/18501
* doc/invoke.texi (-Wuninitialized): Mention interaction with CCP.
---
We give some 'more effective' notes like this for -ftree-vrp. What do you think?
gcc/doc/invoke.texi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index f93fe43733dc..5b02d2deafe7 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -8337,6 +8337,8 @@ struct A @{
@};
@end smallexample
+This option is more effective when @option{-fno-tree-ccp} is active.
+
@opindex Winvalid-memory-model
@opindex Wno-invalid-memory-model
@item -Wno-invalid-memory-model
--
2.51.0
