Make improvements

- Introduce portable sched_getcpu() api
- Support GCC's __target_clones__ feature
- Make fma() go faster on x86 in default mode
- Remove some asan checks from core libraries
- WinMain() now ensures $HOME and $USER are defined

test/libc/calls/madvise_test.c

@@ -20,6 +20,7 @@
 #include "libc/dce.h"
 #include "libc/errno.h"
 #include "libc/runtime/runtime.h"
+#include "libc/sysv/consts/auxv.h"
 #include "libc/sysv/consts/madv.h"
 #include "libc/sysv/consts/map.h"
 #include "libc/sysv/consts/o.h"
@@ -63,7 +64,9 @@ TEST(madvise, subPages) {
   char *p;
   ASSERT_NE(MAP_FAILED, (p = mmap(0, FRAMESIZE, PROT_READ | PROT_WRITE,
                                   MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)));
-  ASSERT_SYS(0, 0, madvise(p + 4096, FRAMESIZE - 4096, MADV_WILLNEED));
+  ASSERT_SYS(0, 0,
+             madvise(p + getauxval(AT_PAGESZ), FRAMESIZE - getauxval(AT_PAGESZ),
+                     MADV_WILLNEED));
   ASSERT_SYS(0, 0, munmap(p, FRAMESIZE));
 }
 

test/libc/intrin/kprintf_test.c

@@ -20,13 +20,13 @@
 #include "libc/calls/calls.h"
 #include "libc/dce.h"
 #include "libc/errno.h"
-#include "libc/serialize.h"
 #include "libc/limits.h"
 #include "libc/log/libfatal.internal.h"
 #include "libc/macros.internal.h"
 #include "libc/runtime/memtrack.internal.h"
 #include "libc/runtime/runtime.h"
 #include "libc/runtime/symbols.internal.h"
+#include "libc/serialize.h"
 #include "libc/stdio/rand.h"
 #include "libc/stdio/stdio.h"
 #include "libc/str/str.h"

test/libc/nexgen32e/gclongjmp_test.c

@@ -96,6 +96,10 @@ TEST(gc, torture) {
   for (i = 0; i < n; ++i) EXPECT_SYS(0, 0, pthread_join(t[i], 0));
 }
 
+#if defined(__GNUC__) && __GNUC__ >= 12
+#pragma GCC diagnostic ignored "-Winfinite-recursion"
+#endif
+
 void crawl2(jmp_buf jb, const char *path) {
   if (!strcmp(path, "/") || !strcmp(path, ".")) gclongjmp(jb, 1);
   crawl2(jb, gc(xdirname(path)));

test/libc/runtime/tls_test.c

@@ -31,6 +31,8 @@ _Thread_local long y[1] = {40};
 _Alignas(A) _Thread_local long a;
 
 dontubsan void *Worker(void *arg) {
+  ASSERT_EQ(A, _Alignof(a));
+  ASSERT_EQ(0, (uintptr_t)&a & (_Alignof(a) - 1));
   ASSERT_EQ(42, x + y[0] + z);
   ASSERT_EQ(0, (intptr_t)&a & (A - 1));
   if (IsAsan()) {
@@ -41,6 +43,7 @@ dontubsan void *Worker(void *arg) {
 
 TEST(tls, test) {
   ASSERT_EQ(A, _Alignof(a));
+  ASSERT_EQ(0, (uintptr_t)&a & (_Alignof(a) - 1));
   ASSERT_EQ(0, sizeof(struct CosmoTib) % A);
   ASSERT_EQ(0, (intptr_t)__get_tls() & (A - 1));
   EXPECT_EQ(2, z);

test/libc/runtime/zipos_test.c

@@ -21,7 +21,6 @@
 #include "libc/errno.h"
 #include "libc/limits.h"
 #include "libc/mem/gc.h"
-#include "libc/mem/gc.h"
 #include "libc/mem/mem.h"
 #include "libc/runtime/runtime.h"
 #include "libc/runtime/zipos.internal.h"

test/libc/x/xstrcat_test.c

@@ -35,6 +35,10 @@ TEST(xstrcat, pointerAbuse) {
   EXPECT_STREQ("hi there\n", gc(xstrcat("hi", ' ', "there", '\n')));
 }
 
+#if defined(__GNUC__) && __GNUC__ >= 12
+#pragma GCC diagnostic ignored "-Wuse-after-free"
+#endif
+
 int hard_static(void) {
   char *b, *p;
   p = b = malloc(16);