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Follow-up to r219534 to make symbolization more robust.

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1) Explicitly provide important arguments to llvm-symbolizer,
not relying on defaults.
2) Be more defensive about symbolizer output.

This might fix weird failures on ninja-x64-msvc-RA-centos6 buildbot.

llvm-svn: 219541
This commit is contained in:
Alexey Samsonov 2014-10-10 22:58:26 +00:00
parent 72c32a25ce
commit 8bdcdd9e37
1 changed files with 7 additions and 2 deletions
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9
lib/Support/Unix/Signals.inc
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@ -363,9 +363,10 @@ static bool printSymbolizedStackTrace(void **StackTrace, int Depth, FILE *FD) {
}
}
const char *args[] = {"llvm-symbolizer", nullptr};
const char *Args[] = {"llvm-symbolizer", "--functions=linkage", "--inlining",
"--demangle", nullptr};
int RunResult =
sys::ExecuteAndWait(LLVMSymbolizerPath, args, nullptr, Redirects.data());
sys::ExecuteAndWait(LLVMSymbolizerPath, Args, nullptr, Redirects.data());
if (RunResult != 0)
return false;
@ -385,12 +386,16 @@ static bool printSymbolizedStackTrace(void **StackTrace, int Depth, FILE *FD) {
// Read pairs of lines (function name and file/line info) until we
// encounter empty line.
for (;;) {
if (CurLine == Lines.end())
return false;
StringRef FunctionName = *CurLine++;
if (FunctionName.empty())
break;
fprintf(FD, "#%d %p ", frame_no++, StackTrace[i]);
if (!FunctionName.startswith("??"))
fprintf(FD, "%s ", FunctionName.str().c_str());
if (CurLine == Lines.end())
return false;
StringRef FileLineInfo = *CurLine++;
if (!FileLineInfo.startswith("??"))
fprintf(FD, "%s", FileLineInfo.str().c_str());