gcc fixed size char array initialization bug - known?

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To: <linux-kernel@...>
Date: Thursday, August 2, 2007 - 3:55 pm

Hi

I've run across the following gcc "feature":

	char c[4] = "01234";

gcc emits a nice warning

warning: initializer-string for array of chars is too long

But do a

	char c[4] = "0123";

and - a wonder - no warning. No warning with gcc 3.3.2, 3.3.5, 3.4.5, 
4.1.2. I was told 4.2.x does produce a warning. Now do a

	struct {
		char c[4];
		int i;
	} t;
	t.i = 0x12345678;
	strcpy(t.c, c);

and t.i is silently corrupted. Just wanted to ask if this is known, 
really...

Thanks
Guennadi
---
Guennadi Liakhovetski
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Messages in current thread:
gcc fixed size char array initialization bug - known?, Guennadi Liakhovetski, (Thu Aug 2, 3:55 pm)
Re: gcc fixed size char array initialization bug - known?, Stefan Richter, (Fri Aug 3, 11:16 am)
Re: gcc fixed size char array initialization bug - known?, Jan Engelhardt, (Thu Aug 2, 4:18 pm)
Re: gcc fixed size char array initialization bug - known?, Jan Engelhardt, (Thu Aug 2, 3:59 pm)
Re: gcc fixed size char array initialization bug - known?, Satyam Sharma, (Thu Aug 2, 11:17 pm)
Re: gcc fixed size char array initialization bug - known?, Bernd Petrovitsch, (Fri Aug 3, 3:32 am)
Re: gcc fixed size char array initialization bug - known?, Guennadi Liakhovetski, (Thu Aug 2, 4:15 pm)
Re: gcc fixed size char array initialization bug - known?, Guennadi Liakhovetski, (Thu Aug 2, 4:36 pm)
Re: gcc fixed size char array initialization bug - known?, Stefan Richter, (Thu Aug 2, 6:31 pm)
Re: gcc fixed size char array initialization bug - known?, Guennadi Liakhovetski, (Thu Aug 2, 6:51 pm)
Re: gcc fixed size char array initialization bug - known?, Alexander van Heukelum, (Fri Aug 3, 10:04 am)
Re: gcc fixed size char array initialization bug - known?, Guennadi Liakhovetski, (Thu Aug 2, 7:30 pm)
Re: gcc fixed size char array initialization bug - known?, Jan Engelhardt, (Fri Aug 3, 3:56 am)
Re: gcc fixed size char array initialization bug - known?, Stefan Richter, (Thu Aug 2, 7:27 pm)
Re: gcc fixed size char array initialization bug - known?, Stefan Richter, (Thu Aug 2, 6:15 pm)
Re: gcc fixed size char array initialization bug - known?, Guennadi Liakhovetski, (Thu Aug 2, 6:36 pm)
Re: gcc fixed size char array initialization bug - known?, Carlo Florendo, (Fri Aug 3, 12:57 am)
Re: gcc fixed size char array initialization bug - known?, Guennadi Liakhovetski, (Thu Aug 2, 7:26 pm)
Re: gcc fixed size char array initialization bug - known?, Carlo Florendo, (Fri Aug 3, 1:00 am)
Re: gcc fixed size char array initialization bug - known?, Guennadi Liakhovetski, (Thu Aug 2, 4:26 pm)
Re: gcc fixed size char array initialization bug - known?, Guennadi Liakhovetski, (Thu Aug 2, 5:26 pm)
Re: gcc fixed size char array initialization bug - known?, Guennadi Liakhovetski, (Thu Aug 2, 4:21 pm)