Reduce memory needed by ASAN morgue

libc/intrin/asan.c

@@ -594,7 +594,10 @@ static void __asan_deallocate(char *p, long kind) {
       WRITE64BE(p + c - 8, kind);
       __asan_poison((uintptr_t)p, c - 8, kind);
       if (weaken(dlfree)) {
-        weaken(dlfree)(__asan_morgue_add(p));
+        if (c <= FRAMESIZE) {
+          p = __asan_morgue_add(p);
+        }
+        weaken(dlfree)(p);
       }
     } else {
       __asan_report_heap_fault(p, n);

libc/stdio/setvbuf.c

@@ -24,7 +24,7 @@
  *
  * @param mode may be _IOFBF, _IOLBF, or _IONBF
  * @param buf may optionally be non-NULL to set the stream's underlying
- *     buffer, which the stream will own, but won't free, otherwise the
+ *     buffer which the caller still owns and won't free, otherwise the
  *     existing buffer is used
  * @param size is ignored if buf is NULL
  * @return 0 on success or -1 on error

third_party/dlmalloc/dlmalloc.c

@@ -1,6 +1,7 @@
 #include "libc/bits/initializer.internal.h"
 #include "libc/bits/safemacros.internal.h"
 #include "libc/bits/weaken.h"
+#include "libc/calls/calls.h"
 #include "libc/calls/internal.h"
 #include "libc/calls/struct/sysinfo.h"
 #include "libc/dce.h"
@@ -26,6 +27,8 @@ STATIC_YOINK("_init_dlmalloc");
 hidden struct MallocState g_dlmalloc[1];
 hidden struct MallocParams g_mparams;
 
+#define MALLOC_BIGTRACE 0
+
 /**
  * Acquires more system memory for dlmalloc.
  *
@@ -37,6 +40,19 @@ hidden struct MallocParams g_mparams;
  */
 static void *dlmalloc_requires_more_vespene_gas(size_t size) {
   char *p;
+#if MALLOC_BIGTRACE
+  struct MallocStats res = dlmalloc_stats(g_dlmalloc);
+  (dprintf)(2, "\n");
+  (dprintf)(2, "DLMALLOC REQUIRES MORE VESPENE GAS\n");
+  (dprintf)(2, "request          = %',10zu\n", size);
+  (dprintf)(2, "max system bytes = %',10zu\n", res.maxfp);
+  (dprintf)(2, "system bytes     = %',10zu\n", res.fp);
+  (dprintf)(2, "in use bytes     = %',10zu\n", res.used);
+  if (weaken(PrintBacktraceUsingSymbols) && weaken(GetSymbolTable)) {
+    weaken(PrintBacktraceUsingSymbols)(2, __builtin_frame_address(0),
+                                       weaken(GetSymbolTable)());
+  }
+#endif
   if ((p = mapanon(size)) != MAP_FAILED) {
     if (weaken(__asan_poison)) {
       weaken(__asan_poison)((uintptr_t)p, size, kAsanHeapFree);

third_party/dlmalloc/dlmalloc.internal.h

@@ -684,7 +684,7 @@ def bad(i):
   while i < len(lines):
     if lines[i].startswith(('BIRTH', 'DEATH')):
       break
-    print lines[i]
+    print(lines[i])
     i += 1
 for i, line in enumerate(lines):
   i += 1
@@ -694,22 +694,22 @@ for i, line in enumerate(lines):
     b = int(x[1], 16)
     if b in d:
       if d[b] < 0:
-        print "OH NO", i, d[b]
+        print("OH NO", i, d[b])
       else:
         d[b] = -d[b]
     else:
-      print "wut", i
+      print("wut", i)
   elif x[0] == 'BIRTH':
     b = int(x[1], 16)
     if b in d:
       if d[b] > 0:
-        print "bad malloc", i, d[b]
+        print("bad malloc", i, d[b])
       d[b] = i
     else:
       d[b] = i
 for k,v in d.items():
   if v > 0:
-    print "unfreed", v
+    print("unfreed", v)
     bad(v)
 */
 #define MALLOC_TRACE 0
@@ -959,7 +959,7 @@ extern struct MallocParams g_mparams;
 #else /* GNUC */
 #define RTCHECK(e) (e)
 #endif /* GNUC */
-#else  /* !IsTrustworthy() */
+#else /* !IsTrustworthy() */
 #define RTCHECK(e) (1)
 #endif /* !IsTrustworthy() */
 

third_party/mbedtls/test/lib.c

@@ -23,6 +23,7 @@
 #include "libc/mem/mem.h"
 #include "libc/rand/rand.h"
 #include "libc/runtime/internal.h"
+#include "libc/runtime/symbols.internal.h"
 #include "libc/stdio/append.internal.h"
 #include "libc/stdio/stdio.h"
 #include "libc/str/str.h"
@@ -72,10 +73,13 @@ static uint64_t Rando(void) {
 }
 
 int mbedtls_test_platform_setup(void) {
+  char *p;
   int ret = 0;
   showcrashreports();
-  setvbuf(stdout, malloc(BUFSIZ), _IOLBF, BUFSIZ);
-  setvbuf(stderr, malloc(BUFSIZ), _IOLBF, BUFSIZ);
+  setvbuf(stdout, (p = malloc(BUFSIZ)), _IOLBF, BUFSIZ);
+  __cxa_atexit(free, p, 0);
+  setvbuf(stderr, (p = malloc(BUFSIZ)), _IOLBF, BUFSIZ);
+  __cxa_atexit(free, p, 0);
 #if defined(MBEDTLS_PLATFORM_C)
   ret = mbedtls_platform_setup(&platform_ctx);
 #endif /* MBEDTLS_PLATFORM_C */
@@ -90,6 +94,7 @@ void mbedtls_test_platform_teardown(void) {
 
 wontreturn void exit(int rc) {
   if (rc) fwrite(output, 1, appendz(output).i, stderr);
+  free(output);
   __cxa_finalize(0);
   _Exit(rc);
 }