http://llvm.org/bugs/show_bug.cgi?id=8554
Summary: clang fails GCC test 20020614.c: illegal
simplifications when folding constants
Product: clang
Version: trunk
Platform: PC
OS/Version: MacOS X
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
This test fails with clang v118276 on Intel OSX (and probably others). I
haven't looked at it at all. It's from the GCC testsuite:
gcc.c-torture/execute/20020614.c
/* PR c/6677 */
/* Verify that GCC doesn't perform illegal simplifications
when folding constants. */
#include <limits.h>
extern void abort (void);
extern void exit (int);
int main (void)
{
int i;
signed char j;
unsigned char k;
i = SCHAR_MAX;
j = ((signed char) (i << 1)) / 2;
if (j != -1)
abort();
j = ((signed char) (i * 2)) / 2;
if (j != -1)
abort();
i = UCHAR_MAX;
k = ((unsigned char) (i << 1)) / 2;
if (k != UCHAR_MAX/2)
abort();
k = ((unsigned char) (i * 2)) / 2;
if (k != UCHAR_MAX/2)
abort();
exit(0);
}
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