Merging r308483:

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r308483 | hans | 2017-07-19 08:03:38 -0700 (Wed, 19 Jul 2017) | 12 lines

Defeat a GCC -Wunused-result warning

It was warning like:

../llvm-project/llvm/lib/Support/ErrorHandling.cpp:172:51: warning:
ignoring return value of ‘ssize_t write(int, const void*, size_t)’,
         declared with attribute warn_unused_result [-Wunused-result]
            (void)::write(2, OOMMessage, strlen(OOMMessage));

Work around the warning by storing the return value in a variable and
casting that to void instead. We already did this for the other write()
call in this file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_50@308487 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Support/ErrorHandling.cpp b/lib/Support/ErrorHandling.cpp
index 2fd4f3ea0d452a92f5185001d82e59f93cf6e186..fb8ae4c1cd5efa33647454c8b184fd5438e2fa22 100644 (file)
--- a/lib/Support/ErrorHandling.cpp
+++ b/lib/Support/ErrorHandling.cpp
@@ -169,7 +169,8 @@ void llvm::report_bad_alloc_error(const char *Reason, bool GenCrashDiag) {
   // Don't call the normal error handler. It may allocate memory. Directly write
   // an OOM to stderr and abort.
   char OOMMessage[] = "LLVM ERROR: out of memory\n";
-  (void)::write(2, OOMMessage, strlen(OOMMessage));
+  ssize_t written = ::write(2, OOMMessage, strlen(OOMMessage));
+  (void)written;
   abort();
 #endif
 }