[cfe-commits] r151927 - in /cfe/trunk/lib/CodeGen: CGBuiltin.cpp CodeGenFunction.h

[Chris Lattner]

On Mar 3, 2012, at 1:47 PM, Richard Smith wrote:

> Hi,
> 
> This asserts in cases where memset is given a pointer to incomplete type. Testcase:
> 
> typedef unsigned long size_t;
> typedef struct _snd_pcm_hw_params snd_pcm_hw_params_t;
> size_t snd_pcm_hw_params_sizeof(void);
> #define snd_pcm_hw_params_alloca(ptr) __snd_alloca(ptr, snd_pcm_hw_params)
> #define __snd_alloca(ptr,type) do { *ptr = (type##_t *) alloca(type##_sizeof()); memset(*ptr, 0, type##_sizeof()); } while (0)
> int sa_stream_open() {
>   snd_pcm_hw_params_t* hwparams;
>   snd_pcm_hw_params_alloca(&hwparams);
> }
> 

Fixed in r151993, thanks!

-Chris
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