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error.c

#include "error.h"
#include <string.h>
#include <gc/gc.h>

void error_exit(error_t e, const char *msg, ...) {
      va_list ap;

      va_start(ap, msg);
      vfprintf(stderr, msg, ap);
      va_end(ap);

      exit(e);
}

void perror_exit(error_t e, const char *msg) {
      perror(msg);
      exit(e);
}

void *xmalloc(size_t l) {
      void *r = GC_malloc(l);
      if(!r)
            perror_exit(ERROR_SYSTEM, "GC_alloc");
      return r;
}

char *xstrdup(const char *s) {
      char * p = GC_strdup(s);
      if (!p)
            perror_exit(ERROR_SYSTEM, "GC_strdup");
      return p;
}

char *xstrndup(const char *s, int n) {
      char *p = GC_malloc_atomic(n + 1);
      if (!p)
            perror_exit(ERROR_SYSTEM, "gc_malloc_atomic");
      memcpy(p, s, n);
      p[n] = 0;
      return p;
}

char *xstrcat(const char *s1, const char *s2) {
      size_t s1len = strlen(s1);
      size_t s2len = strlen(s2);
      char *s = GC_malloc_atomic(s1len + s2len + 1);
      memcpy(s, s1, s1len);
      memcpy(s + s1len, s2, s2len);
      s[s1len + s2len] = 0;
      return s;
}

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