https://bugs.llvm.org/show_bug.cgi?id=50198
Bug ID: 50198
Summary: [X86] long double to float128 conversion not working
properly
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected]
$ cat test.c
int main(void) {
long double ld = 0;
__float128 f128 = ld;
int i = f128;
return i;
}
$ clang -m64 test.c && ./a.out && echo ok
ok
$ clang -mx32 test.c && ./a.out && echo ok
ok
$ clang -m32 test.c && ./a.out && echo ok
Segmentation fault (core dumped)
This is with clang 12.0.0. It does not seem to be a regression, godbolt.org
shows this to segfault as far back as clang 7 (and also with current trunk).
Before clang 7, the conversion was not supported and resulted in a compiler
error.
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