[llvm] r252800 - Report Windows error code in a fatal error after a system call.

[Paul Robinson via llvm-commits]

Author: probinson
Date: Wed Nov 11 14:49:32 2015
New Revision: 252800

URL: http://llvm.org/viewvc/llvm-project?rev=252800&view=rev
Log:
Report Windows error code in a fatal error after a system call.

Modified:
    llvm/trunk/lib/Support/Windows/Process.inc

Modified: llvm/trunk/lib/Support/Windows/Process.inc
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Support/Windows/Process.inc?rev=252800&r1=252799&r2=252800&view=diff
==============================================================================
--- llvm/trunk/lib/Support/Windows/Process.inc (original)
+++ llvm/trunk/lib/Support/Windows/Process.inc Wed Nov 11 14:49:32 2015
@@ -417,16 +417,23 @@ const char *Process::ResetColor() {
   return 0;
 }
 
+// Include GetLastError() in a fatal error message.
+static void ReportLastErrorFatal(const char *Msg) {
+  std::string ErrMsg;
+  MakeErrMsg(&ErrMsg, Msg);
+  report_fatal_error(ErrMsg);
+}
+
 unsigned Process::GetRandomNumber() {
   HCRYPTPROV HCPC;
   if (!::CryptAcquireContextW(&HCPC, NULL, NULL, PROV_RSA_FULL,
                               CRYPT_VERIFYCONTEXT))
-    report_fatal_error("Could not acquire a cryptographic context");
+    ReportLastErrorFatal("Could not acquire a cryptographic context");
 
   ScopedCryptContext CryptoProvider(HCPC);
   unsigned Ret;
   if (!::CryptGenRandom(CryptoProvider, sizeof(Ret),
                         reinterpret_cast<BYTE *>(&Ret)))
-    report_fatal_error("Could not generate a random number");
+    ReportLastErrorFatal("Could not generate a random number");
   return Ret;
 }