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-rw-r--r--gcc/c/c-decl.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/c/c-decl.c b/gcc/c/c-decl.c
index e30876c..6e7c589 100644
--- a/gcc/c/c-decl.c
+++ b/gcc/c/c-decl.c
@@ -9564,6 +9564,9 @@ declspecs_add_type (location_t loc, struct c_declspecs *specs,
}
return specs;
case RID_BOOL:
+ if (!flag_isoc99 && !in_system_header_at (loc))
+ pedwarn (loc, OPT_Wpedantic,
+ "ISO C90 does not support boolean types");
if (specs->long_p)
error_at (loc,
("both %<long%> and %<_Bool%> in "