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-rw-r--r--gcc/testsuite/gcc.dg/utf-badconcat2.c15
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diff --git a/gcc/testsuite/gcc.dg/utf-badconcat2.c b/gcc/testsuite/gcc.dg/utf-badconcat2.c
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+++ b/gcc/testsuite/gcc.dg/utf-badconcat2.c
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+/* Test unsupported concatenation of UTF-8 string literals. */
+/* { dg-do compile } */
+/* { dg-options "-std=gnu99" } */
+
+void *s0 = u8"a" "b";
+void *s1 = "a" u8"b";
+void *s2 = u8"a" u8"b";
+void *s3 = u8"a" u"b"; /* { dg-error "non-standard concatenation" } */
+void *s4 = u"a" u8"b"; /* { dg-error "non-standard concatenation" } */
+void *s5 = u8"a" U"b"; /* { dg-error "non-standard concatenation" } */
+void *s6 = U"a" u8"b"; /* { dg-error "non-standard concatenation" } */
+void *s7 = u8"a" L"b"; /* { dg-error "non-standard concatenation" } */
+void *s8 = L"a" u8"b"; /* { dg-error "non-standard concatenation" } */
+
+int main () {}