Hi Rafael This looks like a fallout from your ostream rewrite. In clang cc1as_main, when the output file type is “asm”, AsmStreamer owns a formatted_raw_ostream which has a reference to FDOS (raw_ostream), so AsmStreamer must be closed before FDOS. Here is the patch.
Thanks Steven From f930e3d8a8c7da74de6000bb3b80f90efc5615ff Mon Sep 17 00:00:00 2001 From: Steven Wu <steve...@apple.com> Date: Thu, 23 Jul 2015 14:48:24 -0700 Subject: [PATCH 1/2] Fix the cc1as crash when it outputs assembly --- tools/driver/cc1as_main.cpp | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/driver/cc1as_main.cpp b/tools/driver/cc1as_main.cpp index aa92541..fd0fbb4 100644 --- a/tools/driver/cc1as_main.cpp +++ b/tools/driver/cc1as_main.cpp @@ -406,6 +406,9 @@ static bool ExecuteAssembler(AssemblerInvocation &Opts, Failed = Parser->Run(Opts.NoInitialTextSection); } + // Close Streamer first. + // It might have a reference to the output stream. + Str.reset(); // Close the output stream early. BOS.reset(); FDOS.reset(); -- 2.3.8 (Apple Git-58)
0001-Fix-the-cc1as-crash-when-it-outputs-assembly.patch
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