Closed
Description
Before filing a bug, please check whether it has been fixed since
the latest release: run "hg pull -u" and retry what you did to
reproduce the problem. Thanks.
What steps will reproduce the problem?
1. 6c -S this.c
--SNIP--
typedef unsigned long long uint64;
typedef char int8;
static void
puthex(uint64 n, uint64 l, int8* t) {
static int8 hexdigits[] = "0123456789ABCDEF";
while(l--) {
*--t = hexdigits[n & 0xF];
n >>= 4;
}
}
--SNAP--
2. inspect output code
3. notice that an infinite loop (no conditional jump!) is generated
What is the expected output?
A conditional jump.
What do you see instead?
An infinite loop.
Which compiler are you using (5g, 6g, 8g, gccgo)?
6c
Which operating system are you using?
Linux toshiba 2.6.34-12-default #1 SMP 2010-06-29 02:39:08 +0200 i686 i686 i386 GNU/Linux
Which revision are you using? (hg identify)
09ab865d875c+
Please provide any additional information below.
This code can be used to actually run it.
--SNIP--
void main·main(int argc, char** argv) {
int8 buf[3] = {0, 0, 0};
runtime·prints("Hello, World\n");
puthex(0x42, 2, buf+2);
runtime·prints(buf);
}
void main·init() {
}
--SNAP--
No surprise, it crashes.
A similar program works fine with GCC (ugh feels bad to say that).