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Add chibicc

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This program popped up on Hacker News recently. It's the only modern
compiler I've ever seen that doesn't have dependencies and is easily
modified. So I added all of the missing GNU extensions I like to use
which means it might be possible soon to build on non-Linux and have
third party not vendor gcc binaries.
This commit is contained in:
Justine Tunney 2020-12-05 12:20:41 -08:00
parent e44a0cf6f8
commit 8da931a7f6
298 changed files with 19493 additions and 11950 deletions
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30
examples/unbourne.c
View file

@ -141,7 +141,7 @@
#include "libc/sysv/consts/rlim.h"
#include "libc/sysv/consts/sig.h"
#include "libc/sysv/consts/w.h"
#include "third_party/dtoa/dtoa.h"
#include "third_party/gdtoa/gdtoa.h"
#include "third_party/musl/passwd.h"
#undef CEOF
@ -1602,7 +1602,7 @@ static inline void sigclearmask(void) {
* just do a longjmp to the exception handler. The type of exception is
* stored in the global variable "exception".
*/
noreturn static void exraise(int e) {
wontreturn static void exraise(int e) {
if (vforked) _exit(exitstatus);
INTOFF;
exception = e;
@ -1617,7 +1617,7 @@ noreturn static void exraise(int e) {
* are held using the INTOFF macro. (The test for iflag is just
* defensive programming.)
*/
noreturn static void onint(void) {
wontreturn static void onint(void) {
intpending = 0;
sigclearmask();
if (!(rootshell && iflag)) {
@ -1896,20 +1896,20 @@ printfesque(1) static void sh_warnx(const char *fmt, ...) {
* is not NULL then error prints an error message using printf style
* formatting. It then raises the error exception.
*/
noreturn static void exverror(int cond, const char *msg, va_list ap) {
wontreturn static void exverror(int cond, const char *msg, va_list ap) {
exvwarning(msg, ap);
flushall();
exraise(cond);
}
noreturn static void exerror(int cond, const char *msg, ...) {
wontreturn static void exerror(int cond, const char *msg, ...) {
va_list ap;
va_start(ap, msg);
exverror(cond, msg, ap);
va_end(ap);
}
noreturn static void sh_error(const char *msg, ...) {
wontreturn static void sh_error(const char *msg, ...) {
va_list ap;
exitstatus = 2;
va_start(ap, msg);
@ -1917,16 +1917,16 @@ noreturn static void sh_error(const char *msg, ...) {
va_end(ap);
}
noreturn static void badnum(const char *s) {
wontreturn static void badnum(const char *s) {
sh_error(illnum, s);
}
noreturn static void synerror(const char *msg) {
wontreturn static void synerror(const char *msg) {
errlinno = plinno;
sh_error("Syntax error: %s", msg);
}
noreturn static void yyerror(const char *s) {
wontreturn static void yyerror(const char *s) {
sh_error("arithmetic expression: %s: \"%s\"", s, arith_startbuf);
}
@ -1935,7 +1935,7 @@ noreturn static void yyerror(const char *s) {
* argument is the token that is expected, or -1 if more than one type
* of token can occur at this point.
*/
noreturn static void synexpect(int token) {
wontreturn static void synexpect(int token) {
char msg[64];
if (token >= 0) {
fmtstr(msg, 64, "%s unexpected (expecting %s)", tokname[lasttoken], tokname[token]);
@ -1945,7 +1945,7 @@ noreturn static void synexpect(int token) {
synerror(msg);
}
noreturn static void varunset(const char *end, const char *var_, const char *umsg, int varflags) {
wontreturn static void varunset(const char *end, const char *var_, const char *umsg, int varflags) {
const char *msg;
const char *tail;
tail = nullstr;
@ -2096,7 +2096,7 @@ static char *nodesavestr(s) char *s;
return rtn;
}
noreturn static void shellexec(char **, const char *, int);
wontreturn static void shellexec(char **, const char *, int);
static char **listvars(int, int, char ***);
static char *argstr(char *p, int flag);
static char *conv_escape(char *, int *);
@ -3175,7 +3175,7 @@ out:
return exitstatus;
}
noreturn static void evaltreenr(union node *n, int flags) {
wontreturn static void evaltreenr(union node *n, int flags) {
evaltree(n, flags);
abort();
}
@ -3876,7 +3876,7 @@ static int eprintlist(struct output *out, struct strlist *sp, int sep) {
* Exec a program. Never returns. If you change this routine, you may
* have to change the find_command routine as well.
*/
noreturn static void shellexec(char **argv, const char *path, int idx) {
wontreturn static void shellexec(char **argv, const char *path, int idx) {
char *cmdname;
int e;
char **envp;
@ -9316,7 +9316,7 @@ static void setinteractive(int on) {
/*
* Called to exit the shell.
*/
noreturn static void exitshell(void) {
wontreturn static void exitshell(void) {
struct jmploc loc;
char *p;
savestatus = exitstatus;