Fix issue #676: emit error message on failure to open spv file.

SPIRV/GlslangToSpv.cpp

@@ -5319,6 +5319,8 @@ void OutputSpvBin(const std::vector<unsigned int>& spirv, const char* baseName)
 {
     std::ofstream out;
     out.open(baseName, std::ios::binary | std::ios::out);
+    if (out.fail())
+        printf("ERROR: Failed to open file: %s\n", baseName);
     for (int i = 0; i < (int)spirv.size(); ++i) {
         unsigned int word = spirv[i];
         out.write((const char*)&word, 4);
@@ -5331,6 +5333,8 @@ void OutputSpvHex(const std::vector<unsigned int>& spirv, const char* baseName,
 {
     std::ofstream out;
     out.open(baseName, std::ios::binary | std::ios::out);
+    if (out.fail())
+        printf("ERROR: Failed to open file: %s\n", baseName);
     out << "\t// " GLSLANG_REVISION " " GLSLANG_DATE << std::endl;
     if (varName != nullptr) {
         out << "\t #pragma once" << std::endl;

StandAlone/StandAlone.cpp

@@ -662,7 +662,7 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
                     if (! (Options & EOptionMemoryLeakMode)) {
                         printf("%s", logger.getAllMessages().c_str());
                         if (Options & EOptionOutputHexadecimal) {
-							glslang::OutputSpvHex(spirv, GetBinaryName((EShLanguage)stage), variableName);
+                            glslang::OutputSpvHex(spirv, GetBinaryName((EShLanguage)stage), variableName);
                         } else {
                             glslang::OutputSpvBin(spirv, GetBinaryName((EShLanguage)stage));
                         }
@@ -999,8 +999,8 @@ void usage()
            "\n"
            "  --keep-uncalled                         don't eliminate uncalled functions when linking\n"
            "  --ku                                    synonym for --keep-uncalled\n"
-		   "  --variable-name <name>                  Creates a C header file that contains a uint32_t array named <name> initialized with the shader binary code.\n"
-		   "  --vn <name>                             synonym for --variable-name <name>.\n"
+           "  --variable-name <name>                  Creates a C header file that contains a uint32_t array named <name> initialized with the shader binary code.\n"
+           "  --vn <name>                             synonym for --variable-name <name>.\n"
            );
 
     exit(EFailUsage);

glslang/Include/revision.h

@@ -2,5 +2,5 @@
 // For the version, it uses the latest git tag followed by the number of commits.
 // For the date, it uses the current date (when then script is run).
 
-#define GLSLANG_REVISION "Overload400-PrecQual.1842"
-#define GLSLANG_DATE "17-Feb-2017"
+#define GLSLANG_REVISION "Overload400-PrecQual.1843"
+#define GLSLANG_DATE "18-Feb-2017"