Testcase?<br><br><div class="gmail_quote">Tue Aug 14 2012 at 7:21:13 PM, Kostya Serebryany <<a href="mailto:kcc@google.com">kcc@google.com</a>>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Author: kcc<br>
Date: Tue Aug 14 10:18:40 2012<br>
New Revision: 161874<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=161874&view=rev" target="_blank">http://llvm.org/viewvc/llvm-<u></u>project?rev=161874&view=rev</a><br>
Log:<br>
[asan] better diagnostics for mmap failure<br>
<br>
Modified:<br>
    compiler-rt/trunk/lib/asan/<u></u>tests/asan_test.cc<br>
    compiler-rt/trunk/lib/<u></u>sanitizer_common/sanitizer_<u></u>posix.cc<br>
<br>
Modified: compiler-rt/trunk/lib/asan/<u></u>tests/asan_test.cc<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/asan/tests/asan_test.cc?rev=161874&r1=161873&r2=161874&view=diff" target="_blank">http://llvm.org/viewvc/llvm-<u></u>project/compiler-rt/trunk/lib/<u></u>asan/tests/asan_test.cc?rev=<u></u>161874&r1=161873&r2=161874&<u></u>view=diff</a><br>
==============================<u></u>==============================<u></u>==================<br>
--- compiler-rt/trunk/lib/asan/<u></u>tests/asan_test.cc (original)<br>
+++ compiler-rt/trunk/lib/asan/<u></u>tests/asan_test.cc Tue Aug 14 10:18:40 2012<br>
@@ -1879,7 +1879,7 @@<br>
     char *x = (char*)malloc(kAllocSize);<br>
     memset(x, 0, kAllocSize);<br>
     total_size += kAllocSize;<br>
-    fprintf(stderr, "total: %ldM\n", (long)total_size >> 20);<br>
+    fprintf(stderr, "total: %ldM %p\n", (long)total_size >> 20, x);<br>
   }<br>
 }<br>
<br>
<br>
Modified: compiler-rt/trunk/lib/<u></u>sanitizer_common/sanitizer_<u></u>posix.cc<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/sanitizer_common/sanitizer_posix.cc?rev=161874&r1=161873&r2=161874&view=diff" target="_blank">http://llvm.org/viewvc/llvm-<u></u>project/compiler-rt/trunk/lib/<u></u>sanitizer_common/sanitizer_<u></u>posix.cc?rev=161874&r1=161873&<u></u>r2=161874&view=diff</a><br>
==============================<u></u>==============================<u></u>==================<br>
--- compiler-rt/trunk/lib/<u></u>sanitizer_common/sanitizer_<u></u>posix.cc (original)<br>
+++ compiler-rt/trunk/lib/<u></u>sanitizer_common/sanitizer_<u></u>posix.cc Tue Aug 14 10:18:40 2012<br>
@@ -17,10 +17,12 @@<br>
 #include "sanitizer_libc.h"<br>
 #include "sanitizer_procmaps.h"<br>
<br>
+#include <errno.h><br>
 #include <pthread.h><br>
 #include <stdarg.h><br>
 #include <stdio.h><br>
 #include <stdlib.h><br>
+#include <string.h><br>
 #include <sys/mman.h><br>
 #include <sys/resource.h><br>
 #include <sys/time.h><br>
@@ -45,8 +47,9 @@<br>
                             PROT_READ | PROT_WRITE,<br>
                             MAP_PRIVATE | MAP_ANON, -1, 0);<br>
   if (res == (void*)-1) {<br>
-    Report("ERROR: Failed to allocate 0x%zx (%zd) bytes of %s\n",<br>
-           size, size, mem_type);<br>
+    Report("ERROR: Failed to allocate 0x%zx (%zd) bytes of %s: %s\n",<br>
+           size, size, mem_type, strerror(errno));<br>
+    DumpProcessMap();<br>
     CHECK("unable to mmap" && 0);<br>
   }<br>
   return res;<br>
<br>
<br>
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</blockquote></div>