Make improvements

- You can now run `make -j8 toolchain` on Windows
- You can now run `make -j` on MacOS ARM64 and BSD OSes
- You can now use our Emacs dev environment on MacOS/Windows
- Fix bug where the x16 register was being corrupted by --ftrace
- The programs under build/bootstrap/ are updated as fat binaries
- The Makefile now explains how to download cosmocc-0.0.12 toolchain
- The build scripts under bin/ now support "cosmo" branded toolchains
- stat() now goes faster on Windows (shaves 100ms off `make` latency)
- Code cleanup and added review on the Windows signal checking code
- posix_spawnattr_setrlimit() now works around MacOS ARM64 bugs
- Landlock Make now favors posix_spawn() on non-Linux/OpenBSD
- posix_spawn() now has better --strace logging on Windows
- fstatat() can now avoid EACCES in more cases on Windows
- fchmod() can now change the readonly bit on Windows
This commit is contained in:
Justine Tunney 2023-10-14 20:57:15 -07:00
parent 06c6baaf50
commit c9fecf3a55
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
109 changed files with 1188 additions and 454 deletions

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@ -495,3 +495,16 @@ TEST(open, mereOpen_doesntTouch) {
EXPECT_EQ(0, timespec_cmp(st.st_mtim, birth));
EXPECT_EQ(0, timespec_cmp(st.st_atim, birth));
}
TEST(open, canTruncateExistingFile) {
struct stat st;
ASSERT_SYS(0, 0, xbarf("foo", "hello", -1));
ASSERT_SYS(0, 0, stat("foo", &st));
ASSERT_EQ(5, st.st_size);
ASSERT_SYS(0, 3, open("foo", O_RDWR | O_TRUNC));
ASSERT_SYS(0, 0, fstat(3, &st));
ASSERT_EQ(0, st.st_size);
ASSERT_SYS(0, 0, close(3));
ASSERT_SYS(0, 0, stat("foo", &st));
ASSERT_EQ(0, st.st_size);
}