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fix PR6936: don't generate line marker directives when preprocessing

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.S files.  "# 123" is passed through as-is, not treated as a line
marker in this mode.  No testcase, because it would be nasty and isn't
worth it.

llvm-svn: 102391
This commit is contained in:
Chris Lattner
2010-04-26 22:08:10 +00:00
parent 0103d67f98
commit 678eaa90ab
1 changed files with 9 additions and 3 deletions
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12
clang/lib/Frontend/InitPreprocessor.cpp
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@@ -501,7 +501,11 @@ void clang::InitializePreprocessor(Preprocessor &PP,
InitializeFileRemapping(PP.getDiagnostics(), PP.getSourceManager(),
PP.getFileManager(), InitOpts);
Builder.append("# 1 \"<built-in>\" 3");
// Emit line markers for various builtin sections of the file. We don't do
// this in asm preprocessor mode, because "# 4" is not a line marker directive
// in this mode.
if (!PP.getLangOptions().AsmPreprocessor)
Builder.append("# 1 \"<built-in>\" 3");
// Install things like __POWERPC__, __GNUC__, etc into the macro table.
if (InitOpts.UsePredefines)
@@ -510,7 +514,8 @@ void clang::InitializePreprocessor(Preprocessor &PP,
// Add on the predefines from the driver. Wrap in a #line directive to report
// that they come from the command line.
Builder.append("# 1 \"<command line>\" 1");
if (!PP.getLangOptions().AsmPreprocessor)
Builder.append("# 1 \"<command line>\" 1");
// Process #define's and #undef's in the order they are given.
for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) {
@@ -536,7 +541,8 @@ void clang::InitializePreprocessor(Preprocessor &PP,
}
// Exit the command line and go back to <built-in> (2 is LC_LEAVE).
Builder.append("# 1 \"<built-in>\" 2");
if (!PP.getLangOptions().AsmPreprocessor)
Builder.append("# 1 \"<built-in>\" 2");
// Copy PredefinedBuffer into the Preprocessor.
PP.setPredefines(Predefines.str());