http://llvm.org/bugs/show_bug.cgi?id=7542
Summary: clang signal 6 (sometimes with "Bogus start position
hint!")
Product: new-bugs
Version: 2.7
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Created an attachment (id=5153)
--> (http://llvm.org/bugs/attachment.cgi?id=5153)
failure-inducing C
Argh, here's another program that makes my clang behave non-deterministically.
clang reliably crashes but doesn't always give the assert failure notice.
Apologies for non-reduced testcase.
reg...@john-home:~/volatile/bugs/tmp322$ clang -v
clang version 2.8 (trunk 107352)
Target: i386-pc-linux-gnu
Thread model: posix
reg...@john-home:~/volatile/bugs/tmp322$ clang -w small.c -Os
clang: LiveInterval.cpp:128: bool llvm::LiveInterval::overlapsFrom(const
llvm::LiveInterval&, const llvm::LiveRange*) const: Assertion `(StartPos->start
<= i->start || StartPos == other.begin()) && StartPos != other.end() && "Bogus
start position hint!"' failed.
0 clang 0x090a4d08
Stack dump:
0. Program arguments:
/home/regehr/z/compiler-install/llvm-gcc-r107352-install/bin/clang -cc1 -triple
i386-pc-linux-gnu -S -disable-free -main-file-name small.c -mrelocation-model
static -mdisable-fp-elim -mconstructor-aliases -target-cpu pentium4
-resource-dir
/home/regehr/z/compiler-install/llvm-gcc-r107352-install/lib/clang/2.8 -Os -w
-ferror-limit 19 -fmessage-length 91 -fgnu-runtime -fdiagnostics-show-option
-fcolor-diagnostics -o /tmp/cc-ZMnM8A.s -x c small.c
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Simple Register Coalescing' on function '@func_85'
clang: error: clang frontend command failed due to signal 6 (use -v to see
invocation)
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