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-rw-r--r--gcc/testsuite/gcc.dg/cpp/warn-trigraphs-1.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/warn-trigraphs-1.c b/gcc/testsuite/gcc.dg/cpp/warn-trigraphs-1.c
new file mode 100644
index 000000000..4f3779df2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cpp/warn-trigraphs-1.c
@@ -0,0 +1,4 @@
+// { dg-do preprocess }
+// { dg-options "-std=gnu99 -fdiagnostics-show-option -trigraphs -Wtrigraphs" }
+
+??= // { dg-warning "trigraph \\?\\?= converted to # .-Wtrigraphs." }