For PR797:
Make sys::Program::ExecuteAndWait not throw exceptions and update any
affected code. It now return -9999 to signal that the program couldn't be
executed. Only one case (in bugpoint) actually examines the result code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29785 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/CommandLine.cpp b/lib/Support/CommandLine.cpp
index f7fbef6..0699401 100644
--- a/lib/Support/CommandLine.cpp
+++ b/lib/Support/CommandLine.cpp
@@ -31,7 +31,7 @@
using namespace cl;
// Globals for name and overview of program
-static const char *ProgramName = "<unknown>";
+static const char *ProgramName = "<premain>";
static const char *ProgramOverview = 0;
// This collects additional help to be printed.
diff --git a/lib/Support/GraphWriter.cpp b/lib/Support/GraphWriter.cpp
index f3255d8..152261f 100644
--- a/lib/Support/GraphWriter.cpp
+++ b/lib/Support/GraphWriter.cpp
@@ -59,7 +59,9 @@
args.push_back(PSFilename.c_str());
args.push_back(0);
- sys::Program::ExecuteAndWait(gv, &args[0]);
+ if (sys::Program::ExecuteAndWait(gv, &args[0])) {
+ std::cerr << "Error viewing graph: 'gv' not in path?\n";
+ }
}
PSFilename.eraseFromDisk();
#elif HAVE_DOTTY