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tcc doesn't handle string literals like u""

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This commit is contained in:
Krzosa Karol
2026-03-07 15:12:19 +01:00
parent 410ecf02ee
commit 3566408199
2 changed files with 210 additions and 65 deletions
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228
src/core/core_platform.c
View File

@@ -349,6 +349,19 @@ fn void os_core_init(void) {
tcx->perm = perm;
}
#elif PLATFORM_POSIX
#if defined(__linux__) && !defined(_GNU_SOURCE)
#define _GNU_SOURCE
#endif
#if !PLATFORM_EMSCRIPTEN
#include <execinfo.h>
#include <ucontext.h>
#endif
#include <unistd.h>
#include <dlfcn.h>
#include <string.h>
#include <stdarg.h>
#include <math.h>
#include <string.h>
#include <stdio.h>
@@ -356,14 +369,9 @@ fn void os_core_init(void) {
#include <time.h>
#include <sys/mman.h>
#include <signal.h>
#include <ucontext.h>
#include <unistd.h>
#include <dlfcn.h>
#if !PLATFORM_EMSCRIPTEN
#include <execinfo.h>
#include <backtrace.h>
#endif
fn void *os_vmem_reserve(usize size) {
void *result = mmap(0, size, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
return result == MAP_FAILED ? NULL : result;
@@ -399,56 +407,190 @@ fn f64 os_parse_float(char *str) {
return strtod(str, NULL);
}
gb struct backtrace_state *backtrace_state = NULL;
fn void os_core_backtrace_error_callback(void *data, const char *msg, int errnum) {
unused(data);
errorf("libbacktrace error: %s (errnum: %d)\n", msg, errnum);
}
fn int os_core_backtrace_print_callback(void *data, uintptr_t pc, const char *filename, int lineno, const char *function) {
unused(data);
unused(pc);
b32 printed = false;
if (filename != NULL) {
char buffer[512];
char *f = realpath(filename, buffer);
printf("%s:%d:1: ", f, lineno);
printed = true;
}
if (function != NULL) {
printf("%s", function);
printed = true;
}
if (printed) {
printf("\n");
}
return 0;
}
#if !PLATFORM_EMSCRIPTEN
fn void os_unix_crash_handler(int signal, siginfo_t* info, void* context) {
unused(context);
unused(signal);
unused(info);
backtrace_full(backtrace_state, 2, os_core_backtrace_print_callback, os_core_backtrace_error_callback, NULL);
typedef struct b_stacktrace_tag* b_stacktrace_handle;
b_stacktrace_handle b_stacktrace_get();
int b_stacktrace_depth(b_stacktrace_handle stacktrace);
char* b_stacktrace_to_string(b_stacktrace_handle stacktrace);
char* malloc_backtrace(void);
typedef struct print_buf {
char* buf;
int pos;
int size;
} print_buf;
static print_buf buf_init(void) {
print_buf ret = {
(char*) malloc(1024),
0,
1024
};
return ret;
}
static void buf_printf(print_buf* b, const char* fmt, ...) {
va_list args;
va_start(args, fmt);
const int len = vsnprintf(NULL, 0, fmt, args) + 1;
va_end(args);
const int new_end = b->pos + len;
if (new_end > b->size) {
while (new_end > b->size) b->size *= 2;
b->buf = (char*)realloc(b->buf, b->size);
}
va_start(args, fmt);
b->pos += vsnprintf(b->buf + b->pos, len, fmt, args);
va_end(args);
}
char* malloc_backtrace(void) {
b_stacktrace_handle h = b_stacktrace_get();
char* ret = b_stacktrace_to_string(h);
free(h);
return ret;
}
#define B_STACKTRACE_MAX_DEPTH 1024
typedef struct b_stacktrace {
void* trace[B_STACKTRACE_MAX_DEPTH];
int trace_size;
} b_stacktrace;
b_stacktrace_handle b_stacktrace_get(void) {
b_stacktrace* ret = (b_stacktrace*)malloc(sizeof(b_stacktrace));
ret->trace_size = backtrace(ret->trace, B_STACKTRACE_MAX_DEPTH);
return (b_stacktrace_handle)(ret);
}
int b_stacktrace_depth(b_stacktrace_handle h) {
const b_stacktrace* stacktrace = (b_stacktrace*)h;
return stacktrace->trace_size;
}
char* b_stacktrace_to_string(b_stacktrace_handle h) {
const b_stacktrace* stacktrace = (b_stacktrace*)h;
char** messages = backtrace_symbols(stacktrace->trace, stacktrace->trace_size);
print_buf out = buf_init();
int i;
int skip_count = 5;
for (i = 0; i < stacktrace->trace_size; ++i) {
void* tracei = stacktrace->trace[i];
char* msg = messages[i];
if (i < skip_count) {
continue;
}
/* calculate load offset */
Dl_info info;
dladdr(tracei, &info);
if (info.dli_fbase == (void*)0x400000) {
/* address from executable, so don't offset */
info.dli_fbase = NULL;
}
while (*msg && *msg != '(') ++msg;
*msg = 0;
{
char cmd[1024];
char line[2048];
FILE* fp;
snprintf(cmd, 1024, "addr2line -e %s -f -C -p %p 2>/dev/null", messages[i], (void*)((char*)tracei - (char*)info.dli_fbase));
fp = popen(cmd, "r");
if (!fp) {
buf_printf(&out, "Failed to generate trace further...\n");
break;
}
while (fgets(line, sizeof(line), fp)) {
buf_printf(&out, " ");
if (strstr(line, "?? ")) {
/* just output address if nothing can be found */
buf_printf(&out, "%p\n", tracei);
}
else {
int len = strlen(line);
char *at = strstr(line, " at ");
if (at) {
char *function = line;
int function_len = at - line;
char *file = at + 4;
int file_len = strlen(file) - 1;
buf_printf(&out, " %.*s %.*s (%s)\n", file_len, file, function_len, function, messages[i]);
} else {
buf_printf(&out, " %.*s (%s)\n", len - 1, line, messages[i]);
}
}
}
pclose(fp);
}
}
free(messages);
return out.buf;
}
void print_backtrace(void) {
char *backtrace = malloc_backtrace();
puts(backtrace);
free(backtrace);
}
const char *signal_to_string(int signal) {
switch (signal) {
case SIGINT: return "SIGINT";
case SIGILL: return "SIGILL";
case SIGABRT: return "SIGABRT";
case SIGFPE: return "SIGFPE";
case SIGSEGV: return "SIGSEGV";
case SIGTERM: return "SIGTERM";
case SIGHUP: return "SIGALRM";
case SIGQUIT: return "SIGQUIT";
case SIGTRAP: return "SIGTRAP";
case SIGKILL: return "SIGKILL";
case SIGPIPE: return "SIGPIPE";
case SIGALRM: return "SIGHUP";
case SIGPOLL: return "SIGPOLL";
default: return "";
}
}
void backtrace_handle_signal(int signal, siginfo_t* info, void* context) {
(void)context; // unused
printf("Stack trace (%s/%d):", signal_to_string(signal), signal);
if (signal == SIGSEGV) {
printf(" at addr: %p", info->si_addr);
}
puts("");
print_backtrace();
exit(1);
}
fn void os_unix_register_crash_handler() {
backtrace_state = backtrace_create_state(NULL, 1, os_core_backtrace_error_callback, NULL);
void setup_backtrace() {
struct sigaction sa;
sa.sa_sigaction = os_unix_crash_handler;
sa.sa_sigaction = backtrace_handle_signal;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART | SA_SIGINFO;
sigaction(SIGSEGV, &sa, NULL);
sigaction(SIGABRT, &sa, NULL);
sigaction(SIGFPE, &sa, NULL);
sigaction(SIGBUS, &sa, NULL);
sigaction(SIGILL, &sa, NULL);
sigaction(SIGFPE, &sa, NULL);
sigaction(SIGTRAP, &sa, NULL);
}
#endif
fn void os_core_small_init(ma_arena_t *arena) {
@@ -459,7 +601,7 @@ fn void os_core_small_init(ma_arena_t *arena) {
tcx->log.print_file_and_line = true;
tcx->log.log_proc = default_log_proc;
#if !PLATFORM_EMSCRIPTEN
os_unix_register_crash_handler();
setup_backtrace();
#endif
}

33
src/core/core_string16.c
View File

@@ -303,13 +303,13 @@ fn s16_t s16_chop_last_char(s16_t s, s16_t ch) {
return result;
}
fn s16_t s16_chop_last_slash(s16_t s) {
return s16_chop_last_char(s, s16("/"));
}
// fn s16_t s16_chop_last_slash(s16_t s) {
// return s16_chop_last_char(s, s16("/"));
// }
fn s16_t s16_chop_last_period(s16_t s) {
return s16_chop_last_char(s, s16("."));
}
// fn s16_t s16_chop_last_period(s16_t s) {
// return s16_chop_last_char(s, s16("."));
// }
fn s16_t s16_skip_to_last_char(s16_t s, s16_t ch) {
int64_t pos;
@@ -320,17 +320,17 @@ fn s16_t s16_skip_to_last_char(s16_t s, s16_t ch) {
return result;
}
fn s16_t s16_skip_to_last_slash(s16_t s) {
return s16_skip_to_last_char(s, s16("/"));
}
// fn s16_t s16_skip_to_last_slash(s16_t s) {
// return s16_skip_to_last_char(s, s16("/"));
// }
fn s16_t s16_skip_to_last_period(s16_t s) {
return s16_skip_to_last_char(s, s16("."));
}
// fn s16_t s16_skip_to_last_period(s16_t s) {
// return s16_skip_to_last_char(s, s16("."));
// }
fn s16_t s16_get_name_no_ext(s16_t s) {
return s16_skip_to_last_slash(s16_chop_last_period(s));
}
// fn s16_t s16_get_name_no_ext(s16_t s) {
// return s16_skip_to_last_slash(s16_chop_last_period(s));
// }
fn s16_t s16_to_lower_case(ma_arena_t *ma, s16_t s) {
s16_t copy = s16_copy(ma, s);
@@ -504,6 +504,7 @@ fn s16_t s16_copy_ex(alo_t ma, s16_t string) {
return result;
}
#if 0
fn_test void test_string16(void) {
ma_temp_t scratch = ma_begin_scratch();
@@ -617,3 +618,5 @@ fn_test void test_string16(void) {
ma_end_scratch(scratch);
}
#endif