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Implement more security stuff

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- Support deterministic stacks on OpenBSD
- Support OpenBSD system call origin verification
- Fix overrun by one in chibicc string token allocator
- Get all chibicc tests passing under Address Sanitizer
This commit is contained in:
Justine Tunney 2021-02-02 20:21:06 -08:00
parent cbfd4ccd1e
commit c843243322
56 changed files with 376 additions and 245 deletions
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18
libc/log/startfatal.c
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@ -17,9 +17,11 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/fmt/itoa.h"
#include "libc/log/color.internal.h"
#include "libc/log/internal.h"
#include "libc/runtime/runtime.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/fileno.h"
/**
@ -29,6 +31,18 @@
* @see __start_fatal_ndebug()
*/
relegated void __start_fatal(const char *file, int line) {
dprintf(STDERR_FILENO, "%s%s%s%s:%s:%d:%s%s: ", CLS, RED, "error", BLUE1,
file, line, program_invocation_short_name, RESET);
char s[16 + 16 + 16 + 16 + PATH_MAX + 16 + NAME_MAX + 16], *p;
p = stpcpy(s, CLS);
p = stpcpy(p, RED);
p = stpcpy(p, "error");
p = stpcpy(p, BLUE1);
p = stpcpy(p, ":");
p = stpcpy(p, file);
p = stpcpy(p, ":");
p += int64toarray_radix10(line, p);
p = stpcpy(p, ":");
p = stpcpy(p, program_invocation_short_name);
p = stpcpy(p, RESET);
p = stpcpy(p, ": ");
write(2, s, p - s);
}