From d98f46ce647846b0aa30b2e16a30fd4e152a1bf5 Mon Sep 17 00:00:00 2001 From: Carlos Maiolino Date: Thu, 10 Jul 2025 22:55:07 +0200 Subject: Add new code Signed-off-by: Carlos Maiolino --- CSAPP/chap1/hello_compilation_steps/hello.c | 7 + .../hello_compilation_steps/hello_asm_phase2.s | 26 + .../hello_post_preprocessor.i | 801 +++++++++++++++++++++ 3 files changed, 834 insertions(+) create mode 100644 CSAPP/chap1/hello_compilation_steps/hello.c create mode 100644 CSAPP/chap1/hello_compilation_steps/hello_asm_phase2.s create mode 100644 CSAPP/chap1/hello_compilation_steps/hello_post_preprocessor.i (limited to 'CSAPP/chap1/hello_compilation_steps') diff --git a/CSAPP/chap1/hello_compilation_steps/hello.c b/CSAPP/chap1/hello_compilation_steps/hello.c new file mode 100644 index 0000000..2581101 --- /dev/null +++ b/CSAPP/chap1/hello_compilation_steps/hello.c @@ -0,0 +1,7 @@ +#include + +int main(void) +{ + printf("Hello world\n"); + return 0; +} diff --git a/CSAPP/chap1/hello_compilation_steps/hello_asm_phase2.s b/CSAPP/chap1/hello_compilation_steps/hello_asm_phase2.s new file mode 100644 index 0000000..08014a3 --- /dev/null +++ b/CSAPP/chap1/hello_compilation_steps/hello_asm_phase2.s @@ -0,0 +1,26 @@ + .file "hello.c" + .section .rodata +.LC0: + .string "Hello world" + .text + .globl main + .type main, @function +main: +.LFB0: + .cfi_startproc + pushq %rbp + .cfi_def_cfa_offset 16 + .cfi_offset 6, -16 + movq %rsp, %rbp + .cfi_def_cfa_register 6 + movl $.LC0, %edi + call puts + movl $0, %eax + popq %rbp + .cfi_def_cfa 7, 8 + ret + .cfi_endproc +.LFE0: + .size main, .-main + .ident "GCC: (GNU) 7.2.1 20170915 (Red Hat 7.2.1-2)" + .section .note.GNU-stack,"",@progbits diff --git a/CSAPP/chap1/hello_compilation_steps/hello_post_preprocessor.i b/CSAPP/chap1/hello_compilation_steps/hello_post_preprocessor.i new file mode 100644 index 0000000..38966c9 --- /dev/null +++ b/CSAPP/chap1/hello_compilation_steps/hello_post_preprocessor.i @@ -0,0 +1,801 @@ +# 1 "./hello.c" +# 1 "" +# 1 "" +# 31 "" +# 1 "/usr/include/stdc-predef.h" 1 3 4 +# 32 "" 2 +# 1 "./hello.c" +# 1 "/usr/include/stdio.h" 1 3 4 +# 27 "/usr/include/stdio.h" 3 4 +# 1 "/usr/include/bits/libc-header-start.h" 1 3 4 +# 33 "/usr/include/bits/libc-header-start.h" 3 4 +# 1 "/usr/include/features.h" 1 3 4 +# 423 "/usr/include/features.h" 3 4 +# 1 "/usr/include/sys/cdefs.h" 1 3 4 +# 419 "/usr/include/sys/cdefs.h" 3 4 +# 1 "/usr/include/bits/wordsize.h" 1 3 4 +# 420 "/usr/include/sys/cdefs.h" 2 3 4 +# 1 "/usr/include/bits/long-double.h" 1 3 4 +# 421 "/usr/include/sys/cdefs.h" 2 3 4 +# 424 "/usr/include/features.h" 2 3 4 +# 447 "/usr/include/features.h" 3 4 +# 1 "/usr/include/gnu/stubs.h" 1 3 4 +# 10 "/usr/include/gnu/stubs.h" 3 4 +# 1 "/usr/include/gnu/stubs-64.h" 1 3 4 +# 11 "/usr/include/gnu/stubs.h" 2 3 4 +# 448 "/usr/include/features.h" 2 3 4 +# 34 "/usr/include/bits/libc-header-start.h" 2 3 4 +# 28 "/usr/include/stdio.h" 2 3 4 + + + + + +# 1 "/usr/lib/gcc/x86_64-redhat-linux/7/include/stddef.h" 1 3 4 +# 216 "/usr/lib/gcc/x86_64-redhat-linux/7/include/stddef.h" 3 4 + +# 216 "/usr/lib/gcc/x86_64-redhat-linux/7/include/stddef.h" 3 4 +typedef long unsigned int size_t; +# 34 "/usr/include/stdio.h" 2 3 4 + +# 1 "/usr/include/bits/types.h" 1 3 4 +# 27 "/usr/include/bits/types.h" 3 4 +# 1 "/usr/include/bits/wordsize.h" 1 3 4 +# 28 "/usr/include/bits/types.h" 2 3 4 + + +typedef unsigned char __u_char; +typedef unsigned short int __u_short; +typedef unsigned int __u_int; +typedef unsigned long int __u_long; + + +typedef signed char __int8_t; +typedef unsigned char __uint8_t; +typedef signed short int __int16_t; +typedef unsigned short int __uint16_t; +typedef signed int __int32_t; +typedef unsigned int __uint32_t; + +typedef signed long int __int64_t; +typedef unsigned long int __uint64_t; + + + + + + + +typedef long int __quad_t; +typedef unsigned long int __u_quad_t; + + + + + + + +typedef long int __intmax_t; +typedef unsigned long int __uintmax_t; +# 130 "/usr/include/bits/types.h" 3 4 +# 1 "/usr/include/bits/typesizes.h" 1 3 4 +# 131 "/usr/include/bits/types.h" 2 3 4 + + +typedef unsigned long int __dev_t; +typedef unsigned int __uid_t; +typedef unsigned int __gid_t; +typedef unsigned long int __ino_t; +typedef unsigned long int __ino64_t; +typedef unsigned int __mode_t; +typedef unsigned long int __nlink_t; +typedef long int __off_t; +typedef long int __off64_t; +typedef int __pid_t; +typedef struct { int __val[2]; } __fsid_t; +typedef long int __clock_t; +typedef unsigned long int __rlim_t; +typedef unsigned long int __rlim64_t; +typedef unsigned int __id_t; +typedef long int __time_t; +typedef unsigned int __useconds_t; +typedef long int __suseconds_t; + +typedef int __daddr_t; +typedef int __key_t; + + +typedef int __clockid_t; + + +typedef void * __timer_t; + + +typedef long int __blksize_t; + + + + +typedef long int __blkcnt_t; +typedef long int __blkcnt64_t; + + +typedef unsigned long int __fsblkcnt_t; +typedef unsigned long int __fsblkcnt64_t; + + +typedef unsigned long int __fsfilcnt_t; +typedef unsigned long int __fsfilcnt64_t; + + +typedef long int __fsword_t; + +typedef long int __ssize_t; + + +typedef long int __syscall_slong_t; + +typedef unsigned long int __syscall_ulong_t; + + + +typedef __off64_t __loff_t; +typedef __quad_t *__qaddr_t; +typedef char *__caddr_t; + + +typedef long int __intptr_t; + + +typedef unsigned int __socklen_t; + + + + +typedef int __sig_atomic_t; +# 36 "/usr/include/stdio.h" 2 3 4 +# 1 "/usr/include/bits/types/__FILE.h" 1 3 4 + + + +struct _IO_FILE; +typedef struct _IO_FILE __FILE; +# 37 "/usr/include/stdio.h" 2 3 4 +# 1 "/usr/include/bits/types/FILE.h" 1 3 4 + + + +struct _IO_FILE; + + +typedef struct _IO_FILE FILE; +# 38 "/usr/include/stdio.h" 2 3 4 + + + +# 1 "/usr/include/libio.h" 1 3 4 +# 31 "/usr/include/libio.h" 3 4 +# 1 "/usr/include/_G_config.h" 1 3 4 +# 15 "/usr/include/_G_config.h" 3 4 +# 1 "/usr/lib/gcc/x86_64-redhat-linux/7/include/stddef.h" 1 3 4 +# 16 "/usr/include/_G_config.h" 2 3 4 + +# 1 "/usr/include/bits/types/__mbstate_t.h" 1 3 4 +# 13 "/usr/include/bits/types/__mbstate_t.h" 3 4 +typedef struct +{ + int __count; + union + { + unsigned int __wch; + char __wchb[4]; + } __value; +} __mbstate_t; +# 18 "/usr/include/_G_config.h" 2 3 4 + + + + +typedef struct +{ + __off_t __pos; + __mbstate_t __state; +} _G_fpos_t; +typedef struct +{ + __off64_t __pos; + __mbstate_t __state; +} _G_fpos64_t; +# 32 "/usr/include/libio.h" 2 3 4 +# 49 "/usr/include/libio.h" 3 4 +# 1 "/usr/lib/gcc/x86_64-redhat-linux/7/include/stdarg.h" 1 3 4 +# 40 "/usr/lib/gcc/x86_64-redhat-linux/7/include/stdarg.h" 3 4 +typedef __builtin_va_list __gnuc_va_list; +# 50 "/usr/include/libio.h" 2 3 4 +# 145 "/usr/include/libio.h" 3 4 +struct _IO_jump_t; struct _IO_FILE; + + + + +typedef void _IO_lock_t; + + + + + +struct _IO_marker { + struct _IO_marker *_next; + struct _IO_FILE *_sbuf; + + + + int _pos; +# 173 "/usr/include/libio.h" 3 4 +}; + + +enum __codecvt_result +{ + __codecvt_ok, + __codecvt_partial, + __codecvt_error, + __codecvt_noconv +}; +# 241 "/usr/include/libio.h" 3 4 +struct _IO_FILE { + int _flags; + + + + + char* _IO_read_ptr; + char* _IO_read_end; + char* _IO_read_base; + char* _IO_write_base; + char* _IO_write_ptr; + char* _IO_write_end; + char* _IO_buf_base; + char* _IO_buf_end; + + char *_IO_save_base; + char *_IO_backup_base; + char *_IO_save_end; + + struct _IO_marker *_markers; + + struct _IO_FILE *_chain; + + int _fileno; + + + + int _flags2; + + __off_t _old_offset; + + + + unsigned short _cur_column; + signed char _vtable_offset; + char _shortbuf[1]; + + + + _IO_lock_t *_lock; +# 289 "/usr/include/libio.h" 3 4 + __off64_t _offset; + + + + + + + + void *__pad1; + void *__pad2; + void *__pad3; + void *__pad4; + + size_t __pad5; + int _mode; + + char _unused2[15 * sizeof (int) - 4 * sizeof (void *) - sizeof (size_t)]; + +}; + + +typedef struct _IO_FILE _IO_FILE; + + +struct _IO_FILE_plus; + +extern struct _IO_FILE_plus _IO_2_1_stdin_; +extern struct _IO_FILE_plus _IO_2_1_stdout_; +extern struct _IO_FILE_plus _IO_2_1_stderr_; +# 333 "/usr/include/libio.h" 3 4 +typedef __ssize_t __io_read_fn (void *__cookie, char *__buf, size_t __nbytes); + + + + + + + +typedef __ssize_t __io_write_fn (void *__cookie, const char *__buf, + size_t __n); + + + + + + + +typedef int __io_seek_fn (void *__cookie, __off64_t *__pos, int __w); + + +typedef int __io_close_fn (void *__cookie); +# 385 "/usr/include/libio.h" 3 4 +extern int __underflow (_IO_FILE *); +extern int __uflow (_IO_FILE *); +extern int __overflow (_IO_FILE *, int); +# 429 "/usr/include/libio.h" 3 4 +extern int _IO_getc (_IO_FILE *__fp); +extern int _IO_putc (int __c, _IO_FILE *__fp); +extern int _IO_feof (_IO_FILE *__fp) __attribute__ ((__nothrow__ , __leaf__)); +extern int _IO_ferror (_IO_FILE *__fp) __attribute__ ((__nothrow__ , __leaf__)); + +extern int _IO_peekc_locked (_IO_FILE *__fp); + + + + + +extern void _IO_flockfile (_IO_FILE *) __attribute__ ((__nothrow__ , __leaf__)); +extern void _IO_funlockfile (_IO_FILE *) __attribute__ ((__nothrow__ , __leaf__)); +extern int _IO_ftrylockfile (_IO_FILE *) __attribute__ ((__nothrow__ , __leaf__)); +# 458 "/usr/include/libio.h" 3 4 +extern int _IO_vfscanf (_IO_FILE * __restrict, const char * __restrict, + __gnuc_va_list, int *__restrict); +extern int _IO_vfprintf (_IO_FILE *__restrict, const char *__restrict, + __gnuc_va_list); +extern __ssize_t _IO_padn (_IO_FILE *, int, __ssize_t); +extern size_t _IO_sgetn (_IO_FILE *, void *, size_t); + +extern __off64_t _IO_seekoff (_IO_FILE *, __off64_t, int, int); +extern __off64_t _IO_seekpos (_IO_FILE *, __off64_t, int); + +extern void _IO_free_backup_area (_IO_FILE *) __attribute__ ((__nothrow__ , __leaf__)); +# 42 "/usr/include/stdio.h" 2 3 4 + + + + +typedef __gnuc_va_list va_list; +# 57 "/usr/include/stdio.h" 3 4 +typedef __off_t off_t; +# 71 "/usr/include/stdio.h" 3 4 +typedef __ssize_t ssize_t; + + + + + + +typedef _G_fpos_t fpos_t; +# 131 "/usr/include/stdio.h" 3 4 +# 1 "/usr/include/bits/stdio_lim.h" 1 3 4 +# 132 "/usr/include/stdio.h" 2 3 4 + + + +extern struct _IO_FILE *stdin; +extern struct _IO_FILE *stdout; +extern struct _IO_FILE *stderr; + + + + + + +extern int remove (const char *__filename) __attribute__ ((__nothrow__ , __leaf__)); + +extern int rename (const char *__old, const char *__new) __attribute__ ((__nothrow__ , __leaf__)); + + + +extern int renameat (int __oldfd, const char *__old, int __newfd, + const char *__new) __attribute__ ((__nothrow__ , __leaf__)); + + + + + + + +extern FILE *tmpfile (void) ; +# 173 "/usr/include/stdio.h" 3 4 +extern char *tmpnam (char *__s) __attribute__ ((__nothrow__ , __leaf__)) ; + + + + +extern char *tmpnam_r (char *__s) __attribute__ ((__nothrow__ , __leaf__)) ; +# 190 "/usr/include/stdio.h" 3 4 +extern char *tempnam (const char *__dir, const char *__pfx) + __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__malloc__)) ; + + + + + + + +extern int fclose (FILE *__stream); + + + + +extern int fflush (FILE *__stream); +# 213 "/usr/include/stdio.h" 3 4 +extern int fflush_unlocked (FILE *__stream); +# 232 "/usr/include/stdio.h" 3 4 +extern FILE *fopen (const char *__restrict __filename, + const char *__restrict __modes) ; + + + + +extern FILE *freopen (const char *__restrict __filename, + const char *__restrict __modes, + FILE *__restrict __stream) ; +# 265 "/usr/include/stdio.h" 3 4 +extern FILE *fdopen (int __fd, const char *__modes) __attribute__ ((__nothrow__ , __leaf__)) ; +# 278 "/usr/include/stdio.h" 3 4 +extern FILE *fmemopen (void *__s, size_t __len, const char *__modes) + __attribute__ ((__nothrow__ , __leaf__)) ; + + + + +extern FILE *open_memstream (char **__bufloc, size_t *__sizeloc) __attribute__ ((__nothrow__ , __leaf__)) ; + + + + + +extern void setbuf (FILE *__restrict __stream, char *__restrict __buf) __attribute__ ((__nothrow__ , __leaf__)); + + + +extern int setvbuf (FILE *__restrict __stream, char *__restrict __buf, + int __modes, size_t __n) __attribute__ ((__nothrow__ , __leaf__)); + + + + +extern void setbuffer (FILE *__restrict __stream, char *__restrict __buf, + size_t __size) __attribute__ ((__nothrow__ , __leaf__)); + + +extern void setlinebuf (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)); + + + + + + + +extern int fprintf (FILE *__restrict __stream, + const char *__restrict __format, ...); + + + + +extern int printf (const char *__restrict __format, ...); + +extern int sprintf (char *__restrict __s, + const char *__restrict __format, ...) __attribute__ ((__nothrow__)); + + + + + +extern int vfprintf (FILE *__restrict __s, const char *__restrict __format, + __gnuc_va_list __arg); + + + + +extern int vprintf (const char *__restrict __format, __gnuc_va_list __arg); + +extern int vsprintf (char *__restrict __s, const char *__restrict __format, + __gnuc_va_list __arg) __attribute__ ((__nothrow__)); + + + +extern int snprintf (char *__restrict __s, size_t __maxlen, + const char *__restrict __format, ...) + __attribute__ ((__nothrow__)) __attribute__ ((__format__ (__printf__, 3, 4))); + +extern int vsnprintf (char *__restrict __s, size_t __maxlen, + const char *__restrict __format, __gnuc_va_list __arg) + __attribute__ ((__nothrow__)) __attribute__ ((__format__ (__printf__, 3, 0))); +# 365 "/usr/include/stdio.h" 3 4 +extern int vdprintf (int __fd, const char *__restrict __fmt, + __gnuc_va_list __arg) + __attribute__ ((__format__ (__printf__, 2, 0))); +extern int dprintf (int __fd, const char *__restrict __fmt, ...) + __attribute__ ((__format__ (__printf__, 2, 3))); + + + + + + + +extern int fscanf (FILE *__restrict __stream, + const char *__restrict __format, ...) ; + + + + +extern int scanf (const char *__restrict __format, ...) ; + +extern int sscanf (const char *__restrict __s, + const char *__restrict __format, ...) __attribute__ ((__nothrow__ , __leaf__)); +# 395 "/usr/include/stdio.h" 3 4 +extern int fscanf (FILE *__restrict __stream, const char *__restrict __format, ...) __asm__ ("" "__isoc99_fscanf") + + ; +extern int scanf (const char *__restrict __format, ...) __asm__ ("" "__isoc99_scanf") + ; +extern int sscanf (const char *__restrict __s, const char *__restrict __format, ...) __asm__ ("" "__isoc99_sscanf") __attribute__ ((__nothrow__ , __leaf__)) + + ; +# 420 "/usr/include/stdio.h" 3 4 +extern int vfscanf (FILE *__restrict __s, const char *__restrict __format, + __gnuc_va_list __arg) + __attribute__ ((__format__ (__scanf__, 2, 0))) ; + + + + + +extern int vscanf (const char *__restrict __format, __gnuc_va_list __arg) + __attribute__ ((__format__ (__scanf__, 1, 0))) ; + + +extern int vsscanf (const char *__restrict __s, + const char *__restrict __format, __gnuc_va_list __arg) + __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__format__ (__scanf__, 2, 0))); +# 443 "/usr/include/stdio.h" 3 4 +extern int vfscanf (FILE *__restrict __s, const char *__restrict __format, __gnuc_va_list __arg) __asm__ ("" "__isoc99_vfscanf") + + + + __attribute__ ((__format__ (__scanf__, 2, 0))) ; +extern int vscanf (const char *__restrict __format, __gnuc_va_list __arg) __asm__ ("" "__isoc99_vscanf") + + __attribute__ ((__format__ (__scanf__, 1, 0))) ; +extern int vsscanf (const char *__restrict __s, const char *__restrict __format, __gnuc_va_list __arg) __asm__ ("" "__isoc99_vsscanf") __attribute__ ((__nothrow__ , __leaf__)) + + + + __attribute__ ((__format__ (__scanf__, 2, 0))); +# 477 "/usr/include/stdio.h" 3 4 +extern int fgetc (FILE *__stream); +extern int getc (FILE *__stream); + + + + + +extern int getchar (void); +# 495 "/usr/include/stdio.h" 3 4 +extern int getc_unlocked (FILE *__stream); +extern int getchar_unlocked (void); +# 506 "/usr/include/stdio.h" 3 4 +extern int fgetc_unlocked (FILE *__stream); +# 517 "/usr/include/stdio.h" 3 4 +extern int fputc (int __c, FILE *__stream); +extern int putc (int __c, FILE *__stream); + + + + + +extern int putchar (int __c); +# 537 "/usr/include/stdio.h" 3 4 +extern int fputc_unlocked (int __c, FILE *__stream); + + + + + + + +extern int putc_unlocked (int __c, FILE *__stream); +extern int putchar_unlocked (int __c); + + + + + + +extern int getw (FILE *__stream); + + +extern int putw (int __w, FILE *__stream); + + + + + + + +extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream) + ; +# 603 "/usr/include/stdio.h" 3 4 +extern __ssize_t __getdelim (char **__restrict __lineptr, + size_t *__restrict __n, int __delimiter, + FILE *__restrict __stream) ; +extern __ssize_t getdelim (char **__restrict __lineptr, + size_t *__restrict __n, int __delimiter, + FILE *__restrict __stream) ; + + + + + + + +extern __ssize_t getline (char **__restrict __lineptr, + size_t *__restrict __n, + FILE *__restrict __stream) ; + + + + + + + +extern int fputs (const char *__restrict __s, FILE *__restrict __stream); + + + + + +extern int puts (const char *__s); + + + + + + +extern int ungetc (int __c, FILE *__stream); + + + + + + +extern size_t fread (void *__restrict __ptr, size_t __size, + size_t __n, FILE *__restrict __stream) ; + + + + +extern size_t fwrite (const void *__restrict __ptr, size_t __size, + size_t __n, FILE *__restrict __s); +# 673 "/usr/include/stdio.h" 3 4 +extern size_t fread_unlocked (void *__restrict __ptr, size_t __size, + size_t __n, FILE *__restrict __stream) ; +extern size_t fwrite_unlocked (const void *__restrict __ptr, size_t __size, + size_t __n, FILE *__restrict __stream); + + + + + + + +extern int fseek (FILE *__stream, long int __off, int __whence); + + + + +extern long int ftell (FILE *__stream) ; + + + + +extern void rewind (FILE *__stream); +# 707 "/usr/include/stdio.h" 3 4 +extern int fseeko (FILE *__stream, __off_t __off, int __whence); + + + + +extern __off_t ftello (FILE *__stream) ; +# 731 "/usr/include/stdio.h" 3 4 +extern int fgetpos (FILE *__restrict __stream, fpos_t *__restrict __pos); + + + + +extern int fsetpos (FILE *__stream, const fpos_t *__pos); +# 757 "/usr/include/stdio.h" 3 4 +extern void clearerr (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)); + +extern int feof (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)) ; + +extern int ferror (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)) ; + + + +extern void clearerr_unlocked (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)); +extern int feof_unlocked (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)) ; +extern int ferror_unlocked (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)) ; + + + + + + + +extern void perror (const char *__s); + + + + + +# 1 "/usr/include/bits/sys_errlist.h" 1 3 4 +# 26 "/usr/include/bits/sys_errlist.h" 3 4 +extern int sys_nerr; +extern const char *const sys_errlist[]; +# 782 "/usr/include/stdio.h" 2 3 4 + + + + +extern int fileno (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)) ; + + + + +extern int fileno_unlocked (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)) ; +# 800 "/usr/include/stdio.h" 3 4 +extern FILE *popen (const char *__command, const char *__modes) ; + + + + + +extern int pclose (FILE *__stream); + + + + + +extern char *ctermid (char *__s) __attribute__ ((__nothrow__ , __leaf__)); +# 840 "/usr/include/stdio.h" 3 4 +extern void flockfile (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)); + + + +extern int ftrylockfile (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)) ; + + +extern void funlockfile (FILE *__stream) __attribute__ ((__nothrow__ , __leaf__)); +# 868 "/usr/include/stdio.h" 3 4 + +# 2 "./hello.c" 2 + + +# 3 "./hello.c" +int main(void) +{ + printf("Hello world\n"); + return 0; +} -- cgit v1.2.3