https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94271
Bug ID: 94271
Summary: [8/9/10 Regression] lto1: error: two or more sections
for .gnu.lto_fast_clamp.default.9.564bf999b130b5e
since r8-1461-g871cc215f7507cbe
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Since the revision we do not accept:
$ cat 1.i
int a;
static inline int
__attribute__((target_clones("default", "sse2", "sse3", "sse4.1", "sse4.2",
"popcnt", "avx", "avx2", "avx512f",
"fma4"))) fast_clamp() {}
void c() { a = fast_clamp(); }
$ cat 2.i
int aa;
static inline int
__attribute__((target_clones("default", "sse2", "sse3", "sse4.1", "sse4.2",
"popcnt", "avx", "avx2", "avx512f",
"fma4"))) fast_clamp() {}
void b() { aa = fast_clamp(); }
int main()
{
return 0;
}
$ gcc 1.i 2.i -O2 -flto
...
(.text+0x0): multiple definition of `fast_clamp'; /tmp/cc3Vv3xl.o (symbol from
plugin):(.text+0x0): first defined here
The situation is even worse since
r10-6242-gc2bd2b4664be8b73f8fd58a64dec1e93871797cc:
/usr/bin/ld: /tmp/ccwTYmhr.o (symbol from plugin): in function `main':
(.text+0x0): multiple definition of `fast_clamp'; /tmp/ccdQcwap.o (symbol from
plugin):(.text+0x0): first defined here
1.i:6:1: error: ‘fast_clamp’ has already been defined
6 | void c() { a = fast_clamp(); }
| ^
1.i:6:1: note: previously defined here
lto1: fatal error: errors during merging of translation units
compilation terminated.
lto-wrapper: fatal error: gcc returned 1 exit status
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
