6 files changed, 70 insertions, 0 deletions
diff --git a/gcc/testsuite/c-c++-common/cpp/normalize-3.c b/gcc/testsuite/c-c++-common/cpp/normalize-3.c
new file mode 100644
index 000000000..ae0184cfb
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/cpp/normalize-3.c
@@ -0,0 +1,35 @@
+/* { dg-do preprocess } */
+/* { dg-options "-std=c99 -fextended-identifiers -Wnormalized=id" { target c } } */
+/* { dg-options "-fextended-identifiers -Wnormalized=id" { target c++ } } */
+
+\u00AA
+\u00B7
+\u0F43  /* { dg-warning "not in NFC" } */
+a\u05B8\u05B9\u05B9\u05BBb
+ a\u05BB\u05B9\u05B8\u05B9b  /* { dg-warning "not in NFC" } */
+\u09CB
+\u09C7\u09BE /* { dg-warning "not in NFC" } */
+\u0B4B
+\u0B47\u0B3E /* { dg-warning "not in NFC" } */
+\u0BCA
+\u0BC6\u0BBE /* { dg-warning "not in NFC" } */
+\u0BCB
+\u0BC7\u0BBE /* { dg-warning "not in NFC" } */
+\u0CCA
+\u0CC6\u0CC2 /* { dg-warning "not in NFC" } */
+\u0D4A
+\u0D46\u0D3E /* { dg-warning "not in NFC" } */
+\u0D4B
+\u0D47\u0D3E /* { dg-warning "not in NFC" } */
+
+K
+\u212A
+
+\u03AC
+\u1F71 /* { dg-warning "not in NFC" } */
+
+\uAC00
+\u1100\u1161
+\uAC01
+\u1100\u1161\u11A8
+\uAC00\u11A8
diff --git a/gcc/testsuite/c-c++-common/cpp/pr45457.c b/gcc/testsuite/c-c++-common/cpp/pr45457.c
new file mode 100644
index 000000000..14879cd79
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/cpp/pr45457.c
@@ -0,0 +1,18 @@
+/* PR preprocessor/45457 */
+/* { dg-do compile } */
+
+const char *a =
+#ifdef __DBL_DENORM_MIN__                                                                                                                         
+"a"
+#endif                                                                                                                                            
+#if defined(__DBL_EPSILON__)
+"b"
+#endif
+#ifndef __DBL_MAX__
+"c"
+#endif
+#if !defined(__DBL_MIN__)
+"d"
+#endif
+;
+double b = __DBL_DENORM_MIN__ + __DBL_EPSILON__ + __DBL_MAX__ + __DBL_MIN__;
diff --git a/gcc/testsuite/c-c++-common/cpp/warning-directive-1.c b/gcc/testsuite/c-c++-common/cpp/warning-directive-1.c
new file mode 100644
index 000000000..e23d240c2
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/cpp/warning-directive-1.c
@@ -0,0 +1,4 @@
+// { dg-do preprocess }
+// { dg-options "-std=gnu99 -fdiagnostics-show-option" { target c } }
+// { dg-options "-fdiagnostics-show-option" { target c++ } }
+#warning "Printed"  // { dg-warning "\"Printed\" .-Wcpp." }
diff --git a/gcc/testsuite/c-c++-common/cpp/warning-directive-2.c b/gcc/testsuite/c-c++-common/cpp/warning-directive-2.c
new file mode 100644
index 000000000..65edd7bb9
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/cpp/warning-directive-2.c
@@ -0,0 +1,5 @@
+// { dg-do preprocess }
+// { dg-options "-std=gnu99 -fdiagnostics-show-option -Werror=cpp" { target c } }
+// { dg-options "-fdiagnostics-show-option -Werror=cpp" { target c++ } }
+/* { dg-message "some warnings being treated as errors" "" {target "*-*-*"} 0 } */
+#warning "Printed"  // { dg-error "\"Printed\" .-Werror=cpp." }
diff --git a/gcc/testsuite/c-c++-common/cpp/warning-directive-3.c b/gcc/testsuite/c-c++-common/cpp/warning-directive-3.c
new file mode 100644
index 000000000..0c50a318d
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/cpp/warning-directive-3.c
@@ -0,0 +1,4 @@
+// { dg-do preprocess }
+// { dg-options "-std=gnu99 -fdiagnostics-show-option -Werror -Wno-error=cpp" { target c } }
+// { dg-options "-fdiagnostics-show-option -Werror -Wno-error=cpp" { target c++ } }
+#warning "Printed"  // { dg-warning "\"Printed\" .-Wcpp." }
diff --git a/gcc/testsuite/c-c++-common/cpp/warning-directive-4.c b/gcc/testsuite/c-c++-common/cpp/warning-directive-4.c
new file mode 100644
index 000000000..23069f8ad
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/cpp/warning-directive-4.c
@@ -0,0 +1,4 @@
+// { dg-do preprocess }
+// { dg-options "-std=gnu99 -fdiagnostics-show-option -Wno-cpp" { target c } }
+// { dg-options "-fdiagnostics-show-option -Wno-cpp" { target c++ } }
+#warning "Not printed"  // { dg-bogus "." }