Refactor some code

examples/asantest.c

@@ -0,0 +1,16 @@
+#include <stdlib.h>
+
+__static_yoink("__die");
+__static_yoink("GetSymbolByAddr");
+__static_yoink("malloc_inspect_all");
+
+char *lol(int n) {
+  return malloc(n);
+}
+
+char *(*pLol)(int) = lol;
+
+int main(int argc, char *argv[]) {
+  char *s = pLol(4);
+  s[4] = 1;
+}

libc/calls/ntspawn.c

@@ -39,6 +39,7 @@
 #include "libc/nt/struct/startupinfo.h"
 #include "libc/nt/struct/startupinfoex.h"
 #include "libc/proc/ntspawn.h"
+#include "libc/stdalign.internal.h"
 #include "libc/str/str.h"
 #include "libc/sysv/errfuns.h"
 #ifdef __x86_64__
@@ -149,7 +150,7 @@ static textwindows int ntspawn2(struct NtSpawnArgs *a, struct SpawnBlock *sb) {
   // this code won't call malloc in practice
   bool32 ok;
   void *freeme = 0;
-  _Alignas(16) char memory[128];
+  alignas(16) char memory[128];
   size_t size = sizeof(memory);
   struct NtProcThreadAttributeList *alist = (void *)memory;
   uint32_t items = !!a->opt_hParentProcess + !!a->opt_lpExplicitHandleList;

libc/intrin/BUILD.mk

@@ -82,7 +82,16 @@ o//libc/intrin/memcmp.o					\
 o//libc/intrin/memset.o					\
 o//libc/intrin/memmove.o: private			\
 		CFLAGS +=				\
-			-O2 -finline -foptimize-sibling-calls
+			-O2				\
+			-finline			\
+			-foptimize-sibling-calls
+
+# make asan stack traces shorter
+o/$(MODE)/libc/intrin/asanthunk.o: private		\
+		CFLAGS +=				\
+			-Os				\
+			$(NO_MAGIC)			\
+			-foptimize-sibling-calls
 
 o/$(MODE)/libc/intrin/bzero.o				\
 o/$(MODE)/libc/intrin/memcmp.o				\

libc/intrin/strerror.c

@@ -18,9 +18,10 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/dce.h"
 #include "libc/fmt/magnumstrs.internal.h"
+#include "libc/stdalign.internal.h"
 #include "libc/str/str.h"
 
-_Alignas(1) static char strerror_buf[128];
+alignas(1) static char strerror_buf[128];
 
 /**
  * Returns string describing `err`.

libc/mem/tinymalloc.inc

@@ -16,6 +16,7 @@
 #include "libc/assert.h"
 #include "libc/errno.h"
 #include "libc/mem/mem.h"
+#include "libc/stdalign.internal.h"
 #include "libc/stdckdint.h"
 #include "libc/str/str.h"
 
@@ -29,7 +30,7 @@
 
 #ifndef MODE_DBG /* don't interfere with asan dlmalloc hooking */
 
-_Alignas(TINYMALLOC_MAX_ALIGN) static struct {
+alignas(TINYMALLOC_MAX_ALIGN) static struct {
   char memory[TINYMALLOC_MAX_BYTES];
   unsigned used, last, free;
 } heap;

libc/nexgen32e/kbase36.c

@@ -16,9 +16,10 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdalign.internal.h"
 #include "libc/str/tab.internal.h"
 
-_Alignas(uint8_t) const uint8_t kBase36[256] = {
+alignas(uint8_t) const uint8_t kBase36[256] = {
     ['0'] = 1,   //
     ['1'] = 2,   //
     ['2'] = 3,   //

libc/nexgen32e/ktolower.c

@@ -16,9 +16,10 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdalign.internal.h"
 #include "libc/str/tab.internal.h"
 
-_Alignas(uint8_t) const uint8_t kToLower[256] = {
+alignas(uint8_t) const uint8_t kToLower[256] = {
     0,   1,   2,   3,   4,   5,   6,    7,   8,    9,   10,  11,   12,  13,
     14,  15,  16,  17,  18,  19,  20,   21,  22,   23,  24,  25,   26,  27,
     28,  29,  30,  31,  ' ', '!', '\"', '#', '$',  '%', '&', '\'', '(', ')',

libc/nexgen32e/ktoupper.c

@@ -16,9 +16,10 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdalign.internal.h"
 #include "libc/str/tab.internal.h"
 
-_Alignas(uint8_t) const uint8_t kToUpper[256] = {
+alignas(uint8_t) const uint8_t kToUpper[256] = {
     0,   1,   2,   3,   4,   5,   6,    7,   8,    9,   10,  11,   12,  13,
     14,  15,  16,  17,  18,  19,  20,   21,  22,   23,  24,  25,   26,  27,
     28,  29,  30,  31,  ' ', '!', '\"', '#', '$',  '%', '&', '\'', '(', ')',

libc/runtime/clone.c

@@ -78,7 +78,7 @@
 #define LWP_SUSPENDED                     0x00000080
 
 struct CloneArgs {
-  _Alignas(16) union {
+  alignas(16) union {
     struct {
       int tid;
       int this;

libc/runtime/enable_tls.c

@@ -35,6 +35,7 @@
 #include "libc/runtime/internal.h"
 #include "libc/runtime/runtime.h"
 #include "libc/runtime/syslib.internal.h"
+#include "libc/stdalign.internal.h"
 #include "libc/str/locale.h"
 #include "libc/str/str.h"
 #include "libc/thread/posixthread.internal.h"
@@ -47,7 +48,7 @@
 extern unsigned char __tls_mov_nt_rax[];
 extern unsigned char __tls_add_nt_rax[];
 
-_Alignas(TLS_ALIGNMENT) static char __static_tls[6016];
+alignas(TLS_ALIGNMENT) static char __static_tls[6016];
 
 static unsigned long ParseMask(const char *str) {
   int c;

libc/str/khextoint.c

@@ -16,9 +16,10 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/stdalign.internal.h"
 #include "libc/str/tab.internal.h"
 
-_Alignas(int8_t) const int8_t kHexToInt[256] = {
+alignas(int8_t) const int8_t kHexToInt[256] = {
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  // 0x00
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  // 0x10
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  // 0x20