https://bugs.llvm.org/show_bug.cgi?id=52043
Bug ID: 52043
Summary: clang on sparc64 generates reference to unknown symbol
__muloti4
Product: new-bugs
Version: trunk
Hardware: Sun
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
If you compile the following program with -O2, it will fail to link with
undefined reference to `__muloti4'
The bug happens with clang-14 on Sparc64, installed from Debian ports. It
doesn't happen on x86-64 or arm64.
The bug only happens with clang-14, it doesn't happen with older versions.
#include <stdio.h>
__attribute__((noinline)) int mul(__int128 a, __int128 b, __int128 *r)
{
*r = (unsigned __int128)a * (unsigned __int128)b;
return *r / a == b;
}
int main(void)
{
__int128 r;
int o;
o = mul(2, 3, &r);
printf("%d - %d\n", o, (int)r);
return 0;
}
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