Add some builtin headers from Clang

CMakeLists.txt

@@ -71,3 +71,4 @@ add_subdirectory(src/arch)
 add_subdirectory(src/ast)
 add_subdirectory(src)
 add_subdirectory(tests)
+add_subdirectory(resources)

resources/CMakeLists.txt

+add_library(resources headers.c)
+
+function(embed_headers output)
+  file(WRITE ${output} "")
+  file(GLOB headers *.h)
+  foreach(header ${headers})
+    get_filename_component(filename ${header} NAME)
+    string(MAKE_C_IDENTIFIER ${filename} varname)
+    file(READ ${header} contents)
+    file(APPEND ${output} "const char ${varname}[] = R\"CONTENTS(${contents})CONTENTS\";\nconst unsigned ${varname}_len = sizeof(${varname});\n")
+  endforeach()
+endfunction()
+
+embed_headers(${CMAKE_BINARY_DIR}/resources/headers.c)

resources/__stddef_max_align_t.h

+/*===---- __stddef_max_align_t.h - Definition of max_align_t for modules ---===
+ *
+ * Copyright (c) 2014 Chandler Carruth
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *===-----------------------------------------------------------------------===
+ */
+
+#ifndef __CLANG_MAX_ALIGN_T_DEFINED
+#define __CLANG_MAX_ALIGN_T_DEFINED
+
+#if defined(_MSC_VER)
+typedef double max_align_t;
+#elif defined(__APPLE__)
+typedef long double max_align_t;
+#else
+// Define 'max_align_t' to match the GCC definition.
+typedef struct {
+  long long __clang_max_align_nonce1
+      __attribute__((__aligned__(__alignof__(long long))));
+  long double __clang_max_align_nonce2
+      __attribute__((__aligned__(__alignof__(long double))));
+} max_align_t;
+#endif
+
+#endif

resources/float.h

+/*===---- float.h - Characteristics of floating point types ----------------===
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *===-----------------------------------------------------------------------===
+ */
+
+#ifndef __FLOAT_H
+#define __FLOAT_H
+
+/* If we're on MinGW, fall back to the system's float.h, which might have
+ * additional definitions provided for Windows.
+ * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx
+ *
+ * Also fall back on Darwin to allow additional definitions and
+ * implementation-defined values.
+ */
+#if (defined(__APPLE__) || (defined(__MINGW32__) || defined(_MSC_VER))) && \
+    __STDC_HOSTED__ && __has_include_next(<float.h>)
+
+/* Prior to Apple's 10.7 SDK, float.h SDK header used to apply an extra level
+ * of #include_next<float.h> to keep Metrowerks compilers happy. Avoid this
+ * extra indirection.
+ */
+#ifdef __APPLE__
+#define _FLOAT_H_
+#endif
+
+#  include_next <float.h>
+
+/* Undefine anything that we'll be redefining below. */
+#  undef FLT_EVAL_METHOD
+#  undef FLT_ROUNDS
+#  undef FLT_RADIX
+#  undef FLT_MANT_DIG
+#  undef DBL_MANT_DIG
+#  undef LDBL_MANT_DIG
+#  if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__)
+#    undef DECIMAL_DIG
+#  endif
+#  undef FLT_DIG
+#  undef DBL_DIG
+#  undef LDBL_DIG
+#  undef FLT_MIN_EXP
+#  undef DBL_MIN_EXP
+#  undef LDBL_MIN_EXP
+#  undef FLT_MIN_10_EXP
+#  undef DBL_MIN_10_EXP
+#  undef LDBL_MIN_10_EXP
+#  undef FLT_MAX_EXP
+#  undef DBL_MAX_EXP
+#  undef LDBL_MAX_EXP
+#  undef FLT_MAX_10_EXP
+#  undef DBL_MAX_10_EXP
+#  undef LDBL_MAX_10_EXP
+#  undef FLT_MAX
+#  undef DBL_MAX
+#  undef LDBL_MAX
+#  undef FLT_EPSILON
+#  undef DBL_EPSILON
+#  undef LDBL_EPSILON
+#  undef FLT_MIN
+#  undef DBL_MIN
+#  undef LDBL_MIN
+#  if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__)
+#    undef FLT_TRUE_MIN
+#    undef DBL_TRUE_MIN
+#    undef LDBL_TRUE_MIN
+#    undef FLT_DECIMAL_DIG
+#    undef DBL_DECIMAL_DIG
+#    undef LDBL_DECIMAL_DIG
+#  endif
+#endif
+
+/* Characteristics of floating point types, C99 5.2.4.2.2 */
+
+#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
+#define FLT_ROUNDS (__builtin_flt_rounds())
+#define FLT_RADIX __FLT_RADIX__
+
+#define FLT_MANT_DIG __FLT_MANT_DIG__
+#define DBL_MANT_DIG __DBL_MANT_DIG__
+#define LDBL_MANT_DIG __LDBL_MANT_DIG__
+
+#if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__)
+#  define DECIMAL_DIG __DECIMAL_DIG__
+#endif
+
+#define FLT_DIG __FLT_DIG__
+#define DBL_DIG __DBL_DIG__
+#define LDBL_DIG __LDBL_DIG__
+
+#define FLT_MIN_EXP __FLT_MIN_EXP__
+#define DBL_MIN_EXP __DBL_MIN_EXP__
+#define LDBL_MIN_EXP __LDBL_MIN_EXP__
+
+#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__
+#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__
+#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__
+
+#define FLT_MAX_EXP __FLT_MAX_EXP__
+#define DBL_MAX_EXP __DBL_MAX_EXP__
+#define LDBL_MAX_EXP __LDBL_MAX_EXP__
+
+#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__
+#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__
+#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__
+
+#define FLT_MAX __FLT_MAX__
+#define DBL_MAX __DBL_MAX__
+#define LDBL_MAX __LDBL_MAX__
+
+#define FLT_EPSILON __FLT_EPSILON__
+#define DBL_EPSILON __DBL_EPSILON__
+#define LDBL_EPSILON __LDBL_EPSILON__
+
+#define FLT_MIN __FLT_MIN__
+#define DBL_MIN __DBL_MIN__
+#define LDBL_MIN __LDBL_MIN__
+
+#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__)
+#  define FLT_TRUE_MIN __FLT_DENORM_MIN__
+#  define DBL_TRUE_MIN __DBL_DENORM_MIN__
+#  define LDBL_TRUE_MIN __LDBL_DENORM_MIN__
+#  define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__
+#  define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__
+#  define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__
+#endif
+
+#ifdef __STDC_WANT_IEC_60559_TYPES_EXT__
+#  define FLT16_MANT_DIG    __FLT16_MANT_DIG__
+#  define FLT16_DECIMAL_DIG __FLT16_DECIMAL_DIG__
+#  define FLT16_DIG         __FLT16_DIG__
+#  define FLT16_MIN_EXP     __FLT16_MIN_EXP__
+#  define FLT16_MIN_10_EXP  __FLT16_MIN_10_EXP__
+#  define FLT16_MAX_EXP     __FLT16_MAX_EXP__
+#  define FLT16_MAX_10_EXP  __FLT16_MAX_10_EXP__
+#  define FLT16_MAX         __FLT16_MAX__
+#  define FLT16_EPSILON     __FLT16_EPSILON__
+#  define FLT16_MIN         __FLT16_MIN__
+#  define FLT16_TRUE_MIN    __FLT16_TRUE_MIN__
+#endif /* __STDC_WANT_IEC_60559_TYPES_EXT__ */
+
+#endif /* __FLOAT_H */

resources/limits.h

+/*===---- limits.h - Standard header for integer sizes --------------------===*\
+ *
+ * Copyright (c) 2009 Chris Lattner
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+\*===----------------------------------------------------------------------===*/
+
+#ifndef __CLANG_LIMITS_H
+#define __CLANG_LIMITS_H
+
+/* The system's limits.h may, in turn, try to #include_next GCC's limits.h.
+   Avert this #include_next madness. */
+#if defined __GNUC__ && !defined _GCC_LIMITS_H_
+#define _GCC_LIMITS_H_
+#endif
+
+/* System headers include a number of constants from POSIX in <limits.h>.
+   Include it if we're hosted. */
+#if __STDC_HOSTED__ && __has_include_next(<limits.h>)
+#include_next <limits.h>
+#endif
+
+/* Many system headers try to "help us out" by defining these.  No really, we
+   know how big each datatype is. */
+#undef  SCHAR_MIN
+#undef  SCHAR_MAX
+#undef  UCHAR_MAX
+#undef  SHRT_MIN
+#undef  SHRT_MAX
+#undef  USHRT_MAX
+#undef  INT_MIN
+#undef  INT_MAX
+#undef  UINT_MAX
+#undef  LONG_MIN
+#undef  LONG_MAX
+#undef  ULONG_MAX
+
+#undef  CHAR_BIT
+#undef  CHAR_MIN
+#undef  CHAR_MAX
+
+/* C90/99 5.2.4.2.1 */
+#define SCHAR_MAX __SCHAR_MAX__
+#define SHRT_MAX  __SHRT_MAX__
+#define INT_MAX   __INT_MAX__
+#define LONG_MAX  __LONG_MAX__
+
+#define SCHAR_MIN (-__SCHAR_MAX__-1)
+#define SHRT_MIN  (-__SHRT_MAX__ -1)
+#define INT_MIN   (-__INT_MAX__  -1)
+#define LONG_MIN  (-__LONG_MAX__ -1L)
+
+#define UCHAR_MAX (__SCHAR_MAX__*2  +1)
+#define USHRT_MAX (__SHRT_MAX__ *2  +1)
+#define UINT_MAX  (__INT_MAX__  *2U +1U)
+#define ULONG_MAX (__LONG_MAX__ *2UL+1UL)
+
+#ifndef MB_LEN_MAX
+#define MB_LEN_MAX 1
+#endif
+
+#define CHAR_BIT  __CHAR_BIT__
+
+#ifdef __CHAR_UNSIGNED__  /* -funsigned-char */
+#define CHAR_MIN 0
+#define CHAR_MAX UCHAR_MAX
+#else
+#define CHAR_MIN SCHAR_MIN
+#define CHAR_MAX __SCHAR_MAX__
+#endif
+
+/* C99 5.2.4.2.1: Added long long.
+   C++11 18.3.3.2: same contents as the Standard C Library header <limits.h>.
+ */
+#if __STDC_VERSION__ >= 199901L || __cplusplus >= 201103L
+
+#undef  LLONG_MIN
+#undef  LLONG_MAX
+#undef  ULLONG_MAX
+
+#define LLONG_MAX  __LONG_LONG_MAX__
+#define LLONG_MIN  (-__LONG_LONG_MAX__-1LL)
+#define ULLONG_MAX (__LONG_LONG_MAX__*2ULL+1ULL)
+#endif
+
+/* LONG_LONG_MIN/LONG_LONG_MAX/ULONG_LONG_MAX are a GNU extension.  It's too bad
+   that we don't have something like #pragma poison that could be used to
+   deprecate a macro - the code should just use LLONG_MAX and friends.
+ */
+#if defined(__GNU_LIBRARY__) ? defined(__USE_GNU) : !defined(__STRICT_ANSI__)
+
+#undef   LONG_LONG_MIN
+#undef   LONG_LONG_MAX
+#undef   ULONG_LONG_MAX
+
+#define LONG_LONG_MAX  __LONG_LONG_MAX__
+#define LONG_LONG_MIN  (-__LONG_LONG_MAX__-1LL)
+#define ULONG_LONG_MAX (__LONG_LONG_MAX__*2ULL+1ULL)
+#endif
+
+#endif /* __CLANG_LIMITS_H */

resources/stdarg.h

+/*===---- stdarg.h - Variable argument handling ----------------------------===
+ *
+ * Copyright (c) 2008 Eli Friedman
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *===-----------------------------------------------------------------------===
+ */
+
+#ifndef __STDARG_H
+#define __STDARG_H
+
+#ifndef _VA_LIST
+typedef __builtin_va_list va_list;
+#define _VA_LIST
+#endif
+#define va_start(ap, param) __builtin_va_start(ap, param)
+#define va_end(ap)          __builtin_va_end(ap)
+#define va_arg(ap, type)    __builtin_va_arg(ap, type)
+
+/* GCC always defines __va_copy, but does not define va_copy unless in c99 mode
+ * or -ansi is not specified, since it was not part of C90.
+ */
+#define __va_copy(d,s) __builtin_va_copy(d,s)
+
+#if __STDC_VERSION__ >= 199901L || __cplusplus >= 201103L || !defined(__STRICT_ANSI__)
+#define va_copy(dest, src)  __builtin_va_copy(dest, src)
+#endif
+
+#ifndef __GNUC_VA_LIST
+#define __GNUC_VA_LIST 1
+typedef __builtin_va_list __gnuc_va_list;
+#endif
+
+#endif /* __STDARG_H */

resources/stddef.h

+/*===---- stddef.h - Basic type definitions --------------------------------===
+ *
+ * Copyright (c) 2008 Eli Friedman
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *===-----------------------------------------------------------------------===
+ */
+
+#if !defined(__STDDEF_H) || defined(__need_ptrdiff_t) ||                       \
+    defined(__need_size_t) || defined(__need_wchar_t) ||                       \
+    defined(__need_NULL) || defined(__need_wint_t)
+
+#if !defined(__need_ptrdiff_t) && !defined(__need_size_t) &&                   \
+    !defined(__need_wchar_t) && !defined(__need_NULL) &&                       \
+    !defined(__need_wint_t)
+/* Always define miscellaneous pieces when modules are available. */
+#if !__has_feature(modules)
+#define __STDDEF_H
+#endif
+#define __need_ptrdiff_t
+#define __need_size_t
+#define __need_wchar_t
+#define __need_NULL
+#define __need_STDDEF_H_misc
+/* __need_wint_t is intentionally not defined here. */
+#endif
+
+#if defined(__need_ptrdiff_t)
+#if !defined(_PTRDIFF_T) || __has_feature(modules)
+/* Always define ptrdiff_t when modules are available. */
+#if !__has_feature(modules)
+#define _PTRDIFF_T
+#endif
+typedef __PTRDIFF_TYPE__ ptrdiff_t;
+#endif
+#undef __need_ptrdiff_t
+#endif /* defined(__need_ptrdiff_t) */
+
+#if defined(__need_size_t)
+#if !defined(_SIZE_T) || __has_feature(modules)
+/* Always define size_t when modules are available. */
+#if !__has_feature(modules)
+#define _SIZE_T
+#endif
+typedef __SIZE_TYPE__ size_t;
+#endif
+#undef __need_size_t
+#endif /*defined(__need_size_t) */
+
+#if defined(__need_STDDEF_H_misc)
+/* ISO9899:2011 7.20 (C11 Annex K): Define rsize_t if __STDC_WANT_LIB_EXT1__ is
+ * enabled. */
+#if (defined(__STDC_WANT_LIB_EXT1__) && __STDC_WANT_LIB_EXT1__ >= 1 && \
+     !defined(_RSIZE_T)) || __has_feature(modules)
+/* Always define rsize_t when modules are available. */
+#if !__has_feature(modules)
+#define _RSIZE_T
+#endif
+typedef __SIZE_TYPE__ rsize_t;
+#endif
+#endif /* defined(__need_STDDEF_H_misc) */
+
+#if defined(__need_wchar_t)
+#ifndef __cplusplus
+/* Always define wchar_t when modules are available. */
+#if !defined(_WCHAR_T) || __has_feature(modules)
+#if !__has_feature(modules)
+#define _WCHAR_T
+#if defined(_MSC_EXTENSIONS)
+#define _WCHAR_T_DEFINED
+#endif
+#endif
+typedef __WCHAR_TYPE__ wchar_t;
+#endif
+#endif
+#undef __need_wchar_t
+#endif /* defined(__need_wchar_t) */
+
+#if defined(__need_NULL)
+#undef NULL
+#ifdef __cplusplus
+#  if !defined(__MINGW32__) && !defined(_MSC_VER)
+#    define NULL __null
+#  else
+#    define NULL 0
+#  endif
+#else
+#  define NULL ((void*)0)
+#endif
+#ifdef __cplusplus
+#if defined(_MSC_EXTENSIONS) && defined(_NATIVE_NULLPTR_SUPPORTED)
+namespace std { typedef decltype(nullptr) nullptr_t; }
+using ::std::nullptr_t;
+#endif
+#endif
+#undef __need_NULL
+#endif /* defined(__need_NULL) */
+
+#if defined(__need_STDDEF_H_misc)
+#if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L
+#include "__stddef_max_align_t.h"
+#endif
+#define offsetof(t, d) __builtin_offsetof(t, d)
+#undef __need_STDDEF_H_misc
+#endif  /* defined(__need_STDDEF_H_misc) */
+
+/* Some C libraries expect to see a wint_t here. Others (notably MinGW) will use
+__WINT_TYPE__ directly; accommodate both by requiring __need_wint_t */
+#if defined(__need_wint_t)
+/* Always define wint_t when modules are available. */
+#if !defined(_WINT_T) || __has_feature(modules)
+#if !__has_feature(modules)
+#define _WINT_T
+#endif
+typedef __WINT_TYPE__ wint_t;
+#endif
+#undef __need_wint_t
+#endif /* __need_wint_t */
+
+#endif

src/CMakeLists.txt

@@ -11,7 +11,7 @@ add_executable(bpftrace
   types.cpp
 )
 
-target_link_libraries(bpftrace arch ast parser)
+target_link_libraries(bpftrace arch ast parser resources)
 
 ExternalProject_Get_Property(bcc source_dir binary_dir)
 target_include_directories(bpftrace PUBLIC ${source_dir}/src/cc)

src/clang_parser.cpp

@@ -7,6 +7,19 @@
 #include "clang_parser.h"
 #include "types.h"
 
+extern "C" const char __stddef_max_align_t_h[];
+extern "C" const unsigned __stddef_max_align_t_h_len;
+extern "C" const char float_h[];
+extern "C" const unsigned float_h_len;
+extern "C" const char limits_h[];
+extern "C" const unsigned limits_h_len;
+extern "C" const char stdarg_h[];
+extern "C" const unsigned stdarg_h_len;
+extern "C" const char stddef_h[];
+extern "C" const unsigned stddef_h_len;
+extern "C" const char stdint_h[];
+extern "C" const unsigned stdint_h_len;
+
 namespace bpftrace {
 
 static std::string get_clang_string(CXString string)
@@ -39,6 +52,8 @@ static SizedType get_sized_type(CXType clang_type)
     case CXType_UInt:
     case CXType_Long:
     case CXType_ULong:
+    case CXType_LongLong:
+    case CXType_ULongLong:
       return SizedType(Type::integer, size);
     case CXType_Record:
       return SizedType(Type::cast, size, typestr);
@@ -72,7 +87,10 @@ static SizedType get_sized_type(CXType clang_type)
       // TODO add support for arrays
       return SizedType(Type::none, 0);
     }
+    case CXType_LongDouble:
+      return SizedType(Type::none, 0);
     default:
+      // TODO just return Type::none?
       auto unknown_type = get_clang_string(clang_getTypeKindSpelling(clang_type.kind));
       std::cerr << "Error: unknown clang CXType '" << unknown_type << "'" << std::endl;
       abort();
@@ -81,31 +99,65 @@ static SizedType get_sized_type(CXType clang_type)
 
 void ClangParser::parse(ast::Program *program, StructMap &structs)
 {
-  CXUnsavedFile input_file
+  auto input = program->c_definitions;
+  if (input.size() == 0)
+    return; // We occasionally get crashes in libclang otherwise
+
+  CXUnsavedFile unsaved_files[] =
   {
-    .Filename = "definitions.h",
-    .Contents = program->c_definitions.c_str(),
-    .Length = program->c_definitions.size(),
+    {
+      .Filename = "definitions.h",
+      .Contents = input.c_str(),
+      .Length = input.size(),
+    },
+    {
+      .Filename = "/bpftrace/include/__stddef_max_align_t.h",
+      .Contents = __stddef_max_align_t_h,
+      .Length = __stddef_max_align_t_h_len,
+    },
+    {
+      .Filename = "/bpftrace/include/float.h",
+      .Contents = float_h,
+      .Length = float_h_len,
+    },
+    {
+      .Filename = "/bpftrace/include/limits.h",
+      .Contents = limits_h,
+      .Length = limits_h_len,
+    },
+    {
+      .Filename = "/bpftrace/include/stdarg.h",
+      .Contents = stdarg_h,
+      .Length = stdarg_h_len,
+    },
+    {
+      .Filename = "/bpftrace/include/stddef.h",
+      .Contents = stddef_h,
+      .Length = stddef_h_len,
+    },
+    {
+      .Filename = "/bpftrace/include/stdint.h",
+      .Contents = stdint_h,
+      .Length = stdint_h_len,
+    },
   };
 
-  if (input_file.Length == 0)
-    return; // We occasionally get crashes in libclang otherwise
-
   CXIndex index = clang_createIndex(0, 0);
   CXTranslationUnit translation_unit;
+  const char * const args[] = {
+    "-I/bpftrace/include"
+  };
   CXErrorCode error = clang_parseTranslationUnit2(
       index,
       "definitions.h",
-      NULL,
-      0,
-      &input_file,
-      1,
+      args, 1,
+      unsaved_files, 7,
       CXTranslationUnit_None,
       &translation_unit);
   if (error)
   {
     std::cerr << "Clang error while parsing C definitions: " << error << std::endl;
-    std::cerr << "Input (" << input_file.Length << "): " << input_file.Contents << std::endl;
+    std::cerr << "Input (" << input.size() << "): " << input << std::endl;
   }
 
   CXCursor cursor = clang_getTranslationUnitCursor(translation_unit);

tests/CMakeLists.txt

@@ -21,7 +21,7 @@ add_executable(bpftrace_test
   ${CMAKE_SOURCE_DIR}/src/types.cpp
 )
 
-target_link_libraries(bpftrace_test arch ast parser)
+target_link_libraries(bpftrace_test arch ast parser resources)
 
 ExternalProject_Get_Property(bcc source_dir binary_dir)
 target_include_directories(bpftrace_test PUBLIC ${source_dir}/src/cc)

tests/clang_parser.cpp

@@ -188,6 +188,33 @@ TEST(clang_parser, nested_struct_anon)
   EXPECT_EQ(structs["Foo"].fields["bar"].offset, 0);
 }
 
+TEST(clang_parser, builtin_headers)
+{
+  // size_t is definied in stddef.h
+  StructMap structs;
+  parse("#include <stddef.h>\nstruct Foo { size_t x, y, z; }", structs);
+
+  ASSERT_EQ(structs.count("Foo"), 1);
+
+  EXPECT_EQ(structs["Foo"].size, 24);
+  ASSERT_EQ(structs["Foo"].fields.size(), 3);
+  ASSERT_EQ(structs["Foo"].fields.count("x"), 1);
+  ASSERT_EQ(structs["Foo"].fields.count("y"), 1);
+  ASSERT_EQ(structs["Foo"].fields.count("z"), 1);
+
+  EXPECT_EQ(structs["Foo"].fields["x"].type.type, Type::integer);
+  EXPECT_EQ(structs["Foo"].fields["x"].type.size, 8);
+  EXPECT_EQ(structs["Foo"].fields["x"].offset, 0);
+
+  EXPECT_EQ(structs["Foo"].fields["y"].type.type, Type::integer);
+  EXPECT_EQ(structs["Foo"].fields["y"].type.size, 8);
+  EXPECT_EQ(structs["Foo"].fields["y"].offset, 8);
+
+  EXPECT_EQ(structs["Foo"].fields["z"].type.type, Type::integer);
+  EXPECT_EQ(structs["Foo"].fields["z"].type.size, 8);
+  EXPECT_EQ(structs["Foo"].fields["z"].offset, 16);
+}
+
 } // namespace clang_parser
 } // namespace test
 } // namespace bpftrace