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Fix PR1318 by reacting appropriately to a mutating option list.

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llvm-svn: 35905
This commit is contained in:
Chris Lattner 2007-04-11 15:35:18 +00:00
parent 0bf024fb83
commit 32f6730bb1
1 changed files with 14 additions and 0 deletions
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14
lib/Support/CommandLine.cpp
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@ -394,6 +394,10 @@ void cl::ParseCommandLineOptions(int &argc, char **argv,
// the positional args into the PositionalVals list...
Option *ActivePositionalArg = 0;
// Keep track of the option list so far so that we can tell if it is ever
// extended.
Option *CurOptionList = RegisteredOptionList;
// Loop over all of the arguments... processing them.
bool DashDashFound = false; // Have we read '--'?
for (int i = 1; i < argc; ++i) {
@ -401,6 +405,16 @@ void cl::ParseCommandLineOptions(int &argc, char **argv,
const char *Value = 0;
const char *ArgName = "";
// If the head of the option list changed, this means that some command line
// option has just been registered or deregistered. This can occur in
// response to things like -load, etc. If this happens, rescan the options.
if (CurOptionList != RegisteredOptionList) {
PositionalOpts.clear();
Opts.clear();
GetOptionInfo(PositionalOpts, Opts);
CurOptionList = RegisteredOptionList;
}
// Check to see if this is a positional argument. This argument is
// considered to be positional if it doesn't start with '-', if it is "-"
// itself, or if we have seen "--" already.