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/emacs/c.lang

@@ -130,7 +130,7 @@ Keywords={
 "warnifused",
 "attributeallocsize",
 "attributeallocalign",
-"dontdiscard",
+"__wur",
 "nointerpose",
 "returnsnonnull",
 "strftimeesque",

tool/emacs/cosmo-c-keywords.el

@@ -84,7 +84,7 @@
            "warnifused"
            "attributeallocsize"
            "attributeallocalign"
-           "dontdiscard"
+           "__wur"
            "nointerpose"
            "returnsnonnull"
            "strftimeesque"

tool/emacs/key.py

@@ -342,7 +342,7 @@ cosmo_kws = frozenset([
   "memcpyesque",
   "nocallback",
   "nodebuginfo",
-  "dontdiscard",
+  "__wur",
   "dontinline",
   "dontinstrument",
   "nointerpose",
@@ -401,7 +401,7 @@ cosmo_kws = frozenset([
   "memcpyesque",
   "nocallback",
   "nodebuginfo",
-  "dontdiscard",
+  "__wur",
   "dontinline",
   "noinstrument",
   "nointerpose",