llvm dev - Dec 2012 - [LLVMdev] Function inline causes crash in clang for .ast to .s

Hi,

Clang crashes when tried to compile from .ast to .s for below sample code,

inline-test.c
**
*extern inline int func1 (void) { return 0; }
inline int func1 (void) { return 1; }*

clang *works fine* for .c -> .s,
*>clang inline-test.c -std=c99 -fgnu89-inline -S -o inline-test.s *

But *crashes* when tried to generate .s from .ast for same file,
*>clang inline-test.c -std=c99 -fgnu89-inline -emit-ast -o inline-test.ast*
*>clang inline-test.ast -std=c99 -fgnu89-inline -S -o inline-test.s*

clang-3.2: $HOME/llvm/tools/clang/lib/CodeGen/CodeGenFunction.cpp:342: void
clang::CodeGen::CodeGenFunction::*StartFunction*(clang::GlobalDecl,
clang::QualType, llvm::Function*, const clang::CodeGen::CGFunctionInfo&,
const clang::CodeGen::FunctionArgList&, clang::SourceLocation):
Assertion `*CurFn->isDeclaration()
&& "Function already has body?"*' failed.
>From crash message it seems Codegen is already emitted for inline function.
Crash occurs only if tried to generate assembly out of ast file.


Regards,
Rajesh
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Hi,

Could anyone please comment on this ?


Regards,
Rajesh


On Wed, Dec 19, 2012 at 6:54 PM, rajesh viswabramana <
viswabramana.rajesh at gmail.com> wrote:
> Hi,
>
> Clang crashes when tried to compile from .ast to .s for below sample code,
>
> inline-test.c
> **
> *extern inline int func1 (void) { return 0; }
> inline int func1 (void) { return 1; }*
>
> clang *works fine* for .c -> .s,
> *>clang inline-test.c -std=c99 -fgnu89-inline -S -o inline-test.s *
>
> But *crashes* when tried to generate .s from .ast for same file,
> *>clang inline-test.c -std=c99 -fgnu89-inline -emit-ast -o
inline-test.ast
> *
> *>clang inline-test.ast -std=c99 -fgnu89-inline -S -o inline-test.s*
>
> clang-3.2: $HOME/llvm/tools/clang/lib/CodeGen/CodeGenFunction.cpp:342:
> void clang::CodeGen::CodeGenFunction::*StartFunction*(clang::GlobalDecl,
> clang::QualType, llvm::Function*, const
clang::CodeGen::CGFunctionInfo&,
> const clang::CodeGen::FunctionArgList&, clang::SourceLocation):
Assertion `
> *CurFn->isDeclaration() && "Function already has
body?"*' failed.
>
> From crash message it seems Codegen is already emitted for inline function.
>
> Crash occurs only if tried to generate assembly out of ast file.
>
>
> Regards,
> Rajesh
>
>
>
>
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On 12/28/2012 06:21 AM, rajesh viswabramana wrote:
> Hi,
> 
> Could anyone please comment on this ?
For crashes you should open a bug report instead of mailing one of the dev
lists: http://llvm.org/bugs/.  There is some more information on filing bug
reports here: http://llvm.org/docs/HowToSubmitABug.html.

(Also, in the future questions related to Clang should go to cfe-dev).

-- 
Meador Inge
CodeSourcery / Mentor Embedded