Truly terrible patches to fix CoreCLR & CoreFX build on Arch Linux

change-PKGBUILD-prepare-to-be-like-this.txt

prepare() {
  cd "${srcdir}/${_coreclr}"
  patch -p1 < "${srcdir}/gcc6-github-pull-5304.patch"
  patch -p1 < "${srcdir}/segv-github-pull-6027.patch"
  patch -p1 < "/home/leaf/unused-attr-write-coreclr.patch"
  cd "${srcdir}/${_corefx}"
  patch -p1 < "/home/leaf/unused-attr-write-corefx.patch"
}

unused-attr-write-coreclr.patch

diff --git a/src/pal/src/exception/seh.cpp b/src/pal/src/exception/seh.cpp
index 01de6e8..f6a2739 100644
--- a/src/pal/src/exception/seh.cpp
+++ b/src/pal/src/exception/seh.cpp
@@ -233,8 +233,11 @@ SEHProcessException(PEXCEPTION_POINTERS pointers)
                     {
                         // The exception happened in the page right below the stack limit,
                         // so it is a stack overflow
-                        write(STDERR_FILENO, StackOverflowMessage, sizeof(StackOverflowMessage) - 1);
-                        PROCAbort();
+                        if (write(STDERR_FILENO, StackOverflowMessage, sizeof(StackOverflowMessage) - 1)) {
+                           PROCAbort();
+                       } else {
+                           PROCAbort();
+                       }
                     }
                 }

diff --git a/tests/src/Common/Platform/platformdefines.cpp b/tests/src/Common/Platform/platformdefines.cpp
index 4caead5..9ab6c68 100644
--- a/tests/src/Common/Platform/platformdefines.cpp
+++ b/tests/src/Common/Platform/platformdefines.cpp
@@ -277,7 +277,7 @@ DWORD TP_GetFullPathName(LPWSTR fileName, DWORD nBufferLength, LPWSTR lpBuffer)
 	return GetFullPathNameW(fileName, nBufferLength, lpBuffer, NULL);
 #else
	char nativeFullPath[MAX_PATH];
-	realpath(HackyConvertToSTR(fileName), nativeFullPath);
+	if (realpath(HackyConvertToSTR(fileName), nativeFullPath)) { }
	LPWSTR fullPathForCLR = HackyConvertToWSTR(nativeFullPath);
	wcscpy_s(lpBuffer, MAX_PATH, fullPathForCLR);
	return wcslen(lpBuffer);

unused-attr-write-corefx.patch

diff --git a/src/Native/System.Native/pal_process.cpp b/src/Native/System.Native/pal_process.cpp
index da3bf2e..74c4335 100644
--- a/src/Native/System.Native/pal_process.cpp
+++ b/src/Native/System.Native/pal_process.cpp
@@ -142,7 +142,7 @@ extern "C" int32_t SystemNative_ForkAndExecProcess(const char* filename,
     // where the parent process uses members of Process, like ProcessName, when the Process
     // is still the clone of this one. This is a best-effort attempt, so ignore any errors.
 #if HAVE_PIPE2
-    pipe2(waitForChildToExecPipe, O_CLOEXEC);
+    if (pipe2(waitForChildToExecPipe, O_CLOEXEC)) { } else { }
 #endif
 
     // Fork the child process