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Re: bison-2.6.1 released [stable]

From: Hans Aberg
Subject: Re: bison-2.6.1 released [stable]
Date: Mon, 30 Jul 2012 18:17:48 +0200

On 30 Jul 2012, at 17:52, Akim Demaille wrote:

> Le 30 juil. 2012 à 15:53, Akim Demaille a écrit :
>> Actually it would be nice to keep it public, for future references.
> FTR, the most important part:
> configure:29879: checking for stpcpy
> configure:29879: xcrun clang -o conftest -g -O2   conftest.c  >&5
> conftest.c:456:6: warning: incompatible redeclaration of library function 
> 'stpcpy'
> char stpcpy ();
>     ^
> conftest.c:456:6: note: 'stpcpy' is a builtin with type 'char *(char *, const 
> char *)'
> 1 warning generated.
> dsymutil(44363,0x7fff7eaf2960) malloc: *** error for object 0x10fb0a5c0: 
> incorrect checksum for freed object - object was probably modified after 
> being freed.
> *** set a breakpoint in malloc_error_break to debug

I have seen this before, one can set breakpoint and debug in Xcode. Some 
searches suggest that an object may have bee freed twice.

> clang: error: unable to execute command: Abort trap: 6
> clang: error: dsymutil command failed due to signal (use -v to see invocation)
> clang: note: diagnostic msg: Please submit a bug report to 
> http://developer.apple.com/bugreporter/ and include command line arguments 
> and all diagnostic information.
> I cannot reproduce your problem (error for object 0x10fb0a5c0: incorrect
> checksum for freed).

It may be a compiler bug. Hard to catch, and to get fixed.


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