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better error handling when writing modified source

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This commit is contained in:
Lubos Lunak
2012-12-23 23:02:39 +01:00
parent e1b11cc461
commit 8b727538e8
1 changed files with 17 additions and 10 deletions
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27
compilerplugins/clang/plugin.cxx
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@@ -16,6 +16,7 @@
#include <clang/Frontend/CompilerInstance.h>
#include <clang/Frontend/FrontendAction.h>
#include <clang/Frontend/FrontendPluginRegistry.h>
#include <stdio.h>
#include "bodynotinblock.hxx"
#include "lclstaticfix.hxx"
@@ -180,19 +181,25 @@ class PluginHandler
++it )
{
const FileEntry* e = context.getSourceManager().getFileEntryForID( it->first );
string filename = std::string( e->getName()) + ".new";
char* filename = new char[ strlen( e->getName()) + 100 ];
sprintf( filename, "%s.new.%d", e->getName(), getpid());
string error;
// TODO If there will be actually plugins also modifying headers,
// race conditions should be avoided here.
raw_fd_ostream ostream( filename.c_str(), error );
bool ok = false;
raw_fd_ostream ostream( filename, error );
DiagnosticsEngine& diag = context.getDiagnostics();
if( !error.empty())
diag.Report( diag.getCustomDiagID( DiagnosticsEngine::Error,
"cannot write modified source to %0 (%1) [loplugin]" )) << filename << error;
else
diag.Report( diag.getCustomDiagID( DiagnosticsEngine::Note,
"modified source %0 [loplugin]" )) << filename;
if( error.empty())
{
it->second.write( ostream );
ostream.close();
if( !ostream.has_error() && rename( filename, e->getName()) == 0 )
ok = true;
}
ostream.clear_error();
unlink( filename );
if( !ok )
diag.Report( diag.getCustomDiagID( DiagnosticsEngine::Error,
"cannot write modified source to %0 (%1) [loplugin]" )) << e->getName() << error;
delete[] filename;
}
}
private: