Test parsing of C standard library

Author: robertoraggi

tests/unit_tests/parser/c_stdlib.c

@@ -0,0 +1,52 @@
+// RUN: %cxx -toolchain wasm32 -verify -xc -U__cplusplus -D__STDC_VERSION__=202311L %s
+
+#include <assert.h>
+#include <complex.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fenv.h>
+#include <float.h>
+#include <inttypes.h>
+#include <iso646.h>
+#include <limits.h>
+#include <locale.h>
+#include <math.h>
+
+#ifndef __wasi__
+#include <setjmp.h>
+#include <signal.h>
+#endif
+
+#include <stdalign.h>
+#include <stdarg.h>
+#include <stdatomic.h>
+
+#if __has_include(<stdbit.h>)
+#include <stdbit.h>
+#endif
+#include <stdbool.h>
+
+#if __has_include(<stdckdint.h>)
+#include <stdckdint.h>
+#endif
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdnoreturn.h>
+#include <string.h>
+#include <tgmath.h>
+
+#if __has_include(<threads.h>)
+#include <threads.h>
+#endif
+
+#include <time.h>
+
+#if __has_include(<uchar.h>)
+#include <uchar.h>
+#endif
+
+#include <wchar.h>
+#include <wctype.h>