Make improvements

- Invent openatemp() API
- Invent O_UNLINK open flag
- Introduce getenv_secure() API
- Remove `git pull` from cosmocc
- Fix utimes() when path is NULL
- Fix mktemp() to never return NULL
- Fix utimensat() UTIME_OMIT on XNU
- Improve utimensat() code for RHEL5
- Turn `argv[0]` C:/ to /C/ on Windows
- Introduce tmpnam() and tmpnam_r() APIs
- Fix more const issues with internal APIs
- Permit utimes() on WIN32 in O_RDONLY mode
- Fix fdopendir() to check fd is a directory
- Fix recent crash regression in landlock make
- Fix futimens(AT_FDCWD, NULL) to return EBADF
- Use workaround so `make -j` doesn't fork bomb
- Rename dontdiscard to __wur (just like glibc)
- Fix st_size for WIN32 symlinks containing UTF-8
- Introduce stdio ext APIs needed by GNU coreutils
- Fix lstat() on WIN32 for symlinks to directories
- Move some constants from normalize.inc to limits.h
- Fix segv with memchr() and memcmp() overlapping page
- Implement POSIX fflush() behavior for reader streams
- Implement AT_SYMLINK_NOFOLLOW for utimensat() on WIN32
- Don't change read-only status of existing files on WIN32
- Correctly handle `0x[^[:xdigit:]]` case in strtol() functions

tool/decode/zip.c

@@ -48,12 +48,12 @@
  * @fileoverview Zip File Disassembler.
  */
 
-dontdiscard char *FormatDosDate(uint16_t dosdate) {
+static __wur char *FormatDosDate(uint16_t dosdate) {
   return xasprintf("%04u-%02u-%02u", ((dosdate >> 9) & 0b1111111) + 1980,
                    (dosdate >> 5) & 0b1111, dosdate & 0b11111);
 }
 
-dontdiscard char *FormatDosTime(uint16_t dostime) {
+static __wur char *FormatDosTime(uint16_t dostime) {
   return xasprintf("%02u:%02u:%02u", (dostime >> 11) & 0b11111,
                    (dostime >> 5) & 0b111111, (dostime << 1) & 0b111110);
 }