From: Jakub Jelinek <jakub@redhat.com>
Date: Sun, 3 Aug 2025 16:32:19 +0000 (+0200)
Subject: c++: Add stringification testcase for CWG1709 [PR120778]
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=625d5776f9cd0b09512d7b5e403737ad944f33d3;p=thirdparty%2Fgcc.git

c++: Add stringification testcase for CWG1709 [PR120778]

The CWG1709 just codifies existing GCC (and clang) behavior, so this
just adds a testcase for that.

2025-08-03  Jakub Jelinek  <jakub@redhat.com>

	PR preprocessor/120778
	* g++.dg/DRs/dr1709.C: New test.
---

diff --git a/gcc/testsuite/g++.dg/DRs/dr1709.C b/gcc/testsuite/g++.dg/DRs/dr1709.C
new file mode 100644
index 00000000000..d3854d8da1a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/DRs/dr1709.C
@@ -0,0 +1,18 @@
+// DR 1709 - Stringizing raw string literals containing newline
+// { dg-do run { target c++26 } }
+
+#define A(a) #a
+const char *a = A(a\f\\b"c");
+const char *b = A(R"abc(a\b
+
+)abc");
+
+int
+main ()
+{
+  if (a[1] != '\f' || a[2] != '\\' || a[4] != '"' || a[6] != '"')
+    __builtin_abort ();
+  if (b[1] != '"' || b[7] != '\\' || b[9] != '\n' || b[10] != '\n'
+      || b[11] != ')' || b[15] != '"')
+    __builtin_abort ();
+}