test cases: Add test ensuring that -include in gcc won't break pch

This is just forcing the usage of -include as c_args, even though this
particular case can happen easily when this is provided via a dependency
cflags.

We also ensure that both the headers are included by using locale
definitions.

1 files changed, 11 insertions, 0 deletions

diff --git a/test cases/common/13 pch/withIncludeFile/prog.c b/test cases/common/13 pch/withIncludeFile/prog.c
new file mode 100644
index 000000000..7a9a93c6a
--- /dev/null
+++ b/test cases/common/13 pch/withIncludeFile/prog.c
@@ -0,0 +1,11 @@
+// No includes here, they need to come from the PCH or explicit inclusion
+
+void func(void) {
+    fprintf(stdout, "This is a function that fails if stdio is not #included.\n");
+    setlocale(LC_ALL, ""); /* This will fail if locale.h is not included */
+}
+
+int main(void) {
+    return 0;
+}
+