Make sure that there is no case where a signal can occur leaving a partially

written output file.  This is important because crashing testcases often write
part of a file out, and the testing harness decides the file is up-to-date next
time the test is run.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2303 91177308-0d34-0410-b5e6-96231b3b80d8

tools/as/as.cpp

@@ -13,6 +13,7 @@
 #include "llvm/Assembly/Parser.h"
 #include "llvm/Bytecode/Writer.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <fstream>
 #include <string>
 #include <memory>
@@ -70,6 +71,9 @@ int main(int argc, char **argv) {
         }
 
 	Out = new std::ofstream(OutputFilename.c_str());
+        // Make sure that the Out file gets unlink'd from the disk if we get a
+        // SIGINT
+        RemoveFileOnSignal(OutputFilename);
       }
     }
   

tools/dis/dis.cpp

@@ -23,6 +23,7 @@
 #include "Support/DepthFirstIterator.h"
 #include "Support/PostOrderIterator.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <fstream>
 #include <iostream>
 using std::cerr;
@@ -85,6 +86,10 @@ int main(int argc, char **argv) {
              << "': File exists! Sending to standard output.\n";
       } else {
         Out = new std::ofstream(OutputFilename.c_str());
+
+        // Make sure that the Out file gets unlink'd from the disk if we get a
+        // SIGINT
+        RemoveFileOnSignal(OutputFilename);
       }
     }
   }

tools/gccas/gccas.cpp

@@ -20,6 +20,7 @@
 #include "llvm/Transforms/Scalar/PromoteMemoryToRegister.h"
 #include "llvm/Bytecode/WriteBytecodePass.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <memory>
 #include <fstream>
 #include <string>
@@ -64,6 +65,9 @@ int main(int argc, char **argv) {
     return 1;
   }
 
+  // Make sure that the Out file gets unlink'd from the disk if we get a SIGINT
+  RemoveFileOnSignal(OutputFilename);
+
   // In addition to just parsing the input from GCC, we also want to spiff it up
   // a little bit.  Do this now.
   //

tools/gccld/gccld.cpp

@@ -24,6 +24,7 @@
 #include "llvm/Transforms/ConstantMerge.h"
 #include "llvm/Transforms/IPO/GlobalDCE.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <fstream>
 #include <memory>
 #include <algorithm>
@@ -161,6 +162,9 @@ int main(int argc, char **argv) {
   }
   Passes.add(new WriteBytecodePass(&Out));        // Write bytecode to file...
 
+  // Make sure that the Out file gets unlink'd from the disk if we get a SIGINT
+  RemoveFileOnSignal(OutputFilename+".bc");
+
   // Run our queue of passes all at once now, efficiently.
   Passes.run(Composite.get());
   Out.close();

tools/link/link.cpp

@@ -14,6 +14,7 @@
 #include "llvm/Bytecode/Writer.h"
 #include "llvm/Module.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <fstream>
 #include <memory>
 #include <sys/types.h>     // For FileExists
@@ -126,6 +127,10 @@ int main(int argc, char **argv) {
       cerr << "Error opening '" << OutputFilename << "'!\n";
       return 1;
     }
+
+    // Make sure that the Out file gets unlink'd from the disk if we get a
+    // SIGINT
+    RemoveFileOnSignal(OutputFilename);
   }
 
   if (Verbose) cerr << "Writing bytecode...\n";

tools/llc/llc.cpp

@@ -18,6 +18,7 @@
 #include "llvm/Function.h"
 #include "llvm/PassManager.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <memory>
 #include <string>
 #include <fstream>
@@ -141,6 +142,10 @@ int main(int argc, char **argv) {
       return 1;
     }
     Out = new std::ofstream(OutputFilename.c_str());
+
+    // Make sure that the Out file gets unlink'd from the disk if we get a
+    // SIGINT
+    RemoveFileOnSignal(OutputFilename);
   } else {
     if (InputFilename == "-") {
       OutputFilename = "-";
@@ -162,6 +167,9 @@ int main(int argc, char **argv) {
         delete Out;
         return 1;
       }
+      // Make sure that the Out file gets unlink'd from the disk if we get a
+      // SIGINT
+      RemoveFileOnSignal(OutputFilename);
     }
   }
   

tools/llvm-as/as.cpp

@@ -13,6 +13,7 @@
 #include "llvm/Assembly/Parser.h"
 #include "llvm/Bytecode/Writer.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <fstream>
 #include <string>
 #include <memory>
@@ -70,6 +71,9 @@ int main(int argc, char **argv) {
         }
 
 	Out = new std::ofstream(OutputFilename.c_str());
+        // Make sure that the Out file gets unlink'd from the disk if we get a
+        // SIGINT
+        RemoveFileOnSignal(OutputFilename);
       }
     }
   

tools/llvm-as/llvm-as.cpp

@@ -13,6 +13,7 @@
 #include "llvm/Assembly/Parser.h"
 #include "llvm/Bytecode/Writer.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <fstream>
 #include <string>
 #include <memory>
@@ -70,6 +71,9 @@ int main(int argc, char **argv) {
         }
 
 	Out = new std::ofstream(OutputFilename.c_str());
+        // Make sure that the Out file gets unlink'd from the disk if we get a
+        // SIGINT
+        RemoveFileOnSignal(OutputFilename);
       }
     }
   

tools/llvm-dis/dis.cpp

@@ -23,6 +23,7 @@
 #include "Support/DepthFirstIterator.h"
 #include "Support/PostOrderIterator.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <fstream>
 #include <iostream>
 using std::cerr;
@@ -85,6 +86,10 @@ int main(int argc, char **argv) {
              << "': File exists! Sending to standard output.\n";
       } else {
         Out = new std::ofstream(OutputFilename.c_str());
+
+        // Make sure that the Out file gets unlink'd from the disk if we get a
+        // SIGINT
+        RemoveFileOnSignal(OutputFilename);
       }
     }
   }

tools/llvm-dis/llvm-dis.cpp

@@ -23,6 +23,7 @@
 #include "Support/DepthFirstIterator.h"
 #include "Support/PostOrderIterator.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <fstream>
 #include <iostream>
 using std::cerr;
@@ -85,6 +86,10 @@ int main(int argc, char **argv) {
              << "': File exists! Sending to standard output.\n";
       } else {
         Out = new std::ofstream(OutputFilename.c_str());
+
+        // Make sure that the Out file gets unlink'd from the disk if we get a
+        // SIGINT
+        RemoveFileOnSignal(OutputFilename);
       }
     }
   }

tools/llvm-link/llvm-link.cpp

@@ -14,6 +14,7 @@
 #include "llvm/Bytecode/Writer.h"
 #include "llvm/Module.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <fstream>
 #include <memory>
 #include <sys/types.h>     // For FileExists
@@ -126,6 +127,10 @@ int main(int argc, char **argv) {
       cerr << "Error opening '" << OutputFilename << "'!\n";
       return 1;
     }
+
+    // Make sure that the Out file gets unlink'd from the disk if we get a
+    // SIGINT
+    RemoveFileOnSignal(OutputFilename);
   }
 
   if (Verbose) cerr << "Writing bytecode...\n";

tools/opt/opt.cpp

@@ -31,6 +31,7 @@
 #include "llvm/Transforms/Instrumentation/TraceValues.h"
 #include "llvm/Transforms/Instrumentation/ProfilePaths.h"
 #include "Support/CommandLine.h"
+#include "Support/Signals.h"
 #include <fstream>
 #include <memory>
 
@@ -174,6 +175,10 @@ int main(int argc, char **argv) {
       cerr << "Error opening " << OutputFilename << "!\n";
       return 1;
     }
+
+    // Make sure that the Output file gets unlink'd from the disk if we get a
+    // SIGINT
+    RemoveFileOnSignal(OutputFilename);
   }
 
   // Create a PassManager to hold and optimize the collection of passes we are