llvm dev - Jan 2014 - [LLVMdev] clang produces invalid debug info? (warning: invalid debug metadata version)

I run this simple command:
(echo "void f() {}" > m.c) && clang -g -c -emit-llvm m.c -o
m.bc &&
llvm-dis m.bc
and it produces a warning:
warning: invalid debug metadata version (0) in m.bc
and resulting m.ll has no debug info.

 From the source code I can see that clang might have not placed the 
proper version constant DEBUG_METADATA_VERSION into one of the debug 
record objects.

Do you care to fix this warning? Or maybe there is a bug in my testcase?

rev.199626

Yuri

Most probably your clang version does not correspond to your llvm-dis.

On Fri, Jan 24, 2014 at 11:25 PM, Yuri <yuri at rawbw.com>
wrote:
> I run this simple command:
> (echo "void f() {}" > m.c) && clang -g -c -emit-llvm
m.c -o m.bc && llvm-dis
> m.bc
> and it produces a warning:
> warning: invalid debug metadata version (0) in m.bc
> and resulting m.ll has no debug info.
>
> From the source code I can see that clang might have not placed the proper
> version constant DEBUG_METADATA_VERSION into one of the debug record
> objects.
>
> Do you care to fix this warning? Or maybe there is a bug in my testcase?
>
> rev.199626
>
> Yuri
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-- 
With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University