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* Value not equal to itself
@ 2012-05-27 4:31 Jordan Foster
2012-05-27 4:31 ` Jordan Foster
2012-05-27 10:22 ` Andrew Pinski
0 siblings, 2 replies; 3+ messages in thread
From: Jordan Foster @ 2012-05-27 4:31 UTC (permalink / raw)
To: gcc-bugs
[-- Attachment #1: Type: text/plain, Size: 339 bytes --]
gcc -v; gcc version 4.2.1 20070831 patched [FreeBSD]
uname -srip; FreeBSD 9.0-RELEASE i386 GENERI
Compiler command; gcc47 minimalErroringCode.cpp -o minimalErroringCode
Test; ./minimalErroringCode
Expected; no output
Result; Assertion failed: ((buffer[0] = 0xFF) && buffer[0] == 0xFF),
function main, file minimalErroringCode.cpp, line 4.
[-- Attachment #2: minimalErroringCode.cpp --]
[-- Type: text/x-c++src, Size: 118 bytes --]
#include <cassert>
int main() {
char buffer[1024];
assert((buffer[0] = 0xFF) && buffer[0] == 0xFF);
return 0;
}
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: Value not equal to itself
2012-05-27 4:31 Value not equal to itself Jordan Foster
@ 2012-05-27 4:31 ` Jordan Foster
2012-05-27 10:22 ` Andrew Pinski
1 sibling, 0 replies; 3+ messages in thread
From: Jordan Foster @ 2012-05-27 4:31 UTC (permalink / raw)
To: gcc-bugs
On 5/26/12, Jordan Foster <jrdnfstr92@gmail.com> wrote:
> gcc -v; gcc version 4.2.1 20070831 patched [FreeBSD]
> uname -srip; FreeBSD 9.0-RELEASE i386 GENERI
> Compiler command; gcc47 minimalErroringCode.cpp -o minimalErroringCode
> Test; ./minimalErroringCode
> Expected; no output
> Result; Assertion failed: ((buffer[0] = 0xFF) && buffer[0] == 0xFF),
> function main, file minimalErroringCode.cpp, line 4.
>
Sorry my bad, sign problem
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Value not equal to itself
2012-05-27 4:31 Value not equal to itself Jordan Foster
2012-05-27 4:31 ` Jordan Foster
@ 2012-05-27 10:22 ` Andrew Pinski
1 sibling, 0 replies; 3+ messages in thread
From: Andrew Pinski @ 2012-05-27 10:22 UTC (permalink / raw)
To: Jordan Foster; +Cc: gcc-bugs
On Sat, May 26, 2012 at 8:25 PM, Jordan Foster <jrdnfstr92@gmail.com> wrote:
> gcc -v; gcc version 4.2.1 20070831 patched [FreeBSD]
> uname -srip; FreeBSD 9.0-RELEASE i386 GENERI
> Compiler command; gcc47 minimalErroringCode.cpp -o minimalErroringCode
> Test; ./minimalErroringCode
> Expected; no output
> Result; Assertion failed: ((buffer[0] = 0xFF) && buffer[0] == 0xFF),
> function main, file minimalErroringCode.cpp, line 4.
Easy answer buffer[0] when promoted to int because of the rules of
C/C++, is equal to -1 and not 255. So a signed char will never equal
to 0xff.
Thanks,
Andrew Pinski
^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-05-27 4:31 Value not equal to itself Jordan Foster
2012-05-27 4:31 ` Jordan Foster
2012-05-27 10:22 ` Andrew Pinski
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