https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66066
kugan at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kugan at gcc dot gnu.org
--- Comment #5 from kugan at gcc dot gnu.org ---
I ran into this today when I created a cross compiler for aarch64-linux-gnu. It
also happens with arm. As Richard Biener suggested, -pedantic helps. How about
this:
diff --git a/gcc/c/c-typeck.c b/gcc/c/c-typeck.c
index 3fcb7c2..d5d82fd 100644
--- a/gcc/c/c-typeck.c
+++ b/gcc/c/c-typeck.c
@@ -10702,7 +10702,7 @@ build_binary_op (location_t location, enum tree_code
code,
{
/* Don't reject a left shift of a negative value in a context
where a constant expression is needed in C90. */
- if (flag_isoc99)
+ if (flag_isoc99 && pedantic)
int_const = false;
if (c_inhibit_evaluation_warnings == 0)
warning_at (location, OPT_Wshift_negative_value,
