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From: Szabolcs Nagy <nsz@port70.net>
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Subject: Re: build musl with clang
Date: Fri, 24 Aug 2012 13:01:53 +0200
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* agent <agentprog@gmail.com> [2012-08-24 16:37:32 +0600]:
> i have built clang from trunk and tried the calloc test. when test
> program is linked dynamically to libc.so it fails it. if it linked
> statically -- it passes ok.
> 

so the bug is still present

try to make a minimal testcase

eg.

void *f()
{
	char *p;

	p = malloc(100);
	if (p && p[0])
		p[0] = 0;
	return p;
}


and compile with -O3 -ffreestanding -S

if the check is eliminated then it's a bug