https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85296
Bug ID: 85296
Summary: [nvptx] pr85244-1.c execution failure
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
Target Milestone: ---
We see failures for this testcase:
...
PASS: gcc.dg/torture/pr85244-1.c -O0 (test for excess errors)
FAIL: gcc.dg/torture/pr85244-1.c -O0 execution test
PASS: gcc.dg/torture/pr85244-1.c -O1 (test for excess errors)
FAIL: gcc.dg/torture/pr85244-1.c -O1 execution test
PASS: gcc.dg/torture/pr85244-1.c -O2 (test for excess errors)
FAIL: gcc.dg/torture/pr85244-1.c -O2 execution test
PASS: gcc.dg/torture/pr85244-1.c -O3 -g (test for excess errors)
FAIL: gcc.dg/torture/pr85244-1.c -O3 -g execution test
PASS: gcc.dg/torture/pr85244-1.c -Os (test for excess errors)
FAIL: gcc.dg/torture/pr85244-1.c -Os execution test
...
The execution failure is due to a cuda linking error:
...
spawn nvptx-none-run ./pr85244-1.exe
error : Size doesn't match for 'val' in 'input file 2 at offset 3047', first
specified in 'input file 1 at offset 1805'
nvptx-run: cuLinkAddData failed: unknown error (CUDA_ERROR_UNKNOWN, 999)
...
In pr85244-1.c we have:
...
struct s {
long a;
int b;
int tab[];
};
extern const struct s val;
...
and in pr85244-2.c we have:
...
const struct s val = { 0, 0, { 42, 1337 } };
...
In pr85244-2.s we have (where 42 is 0x2a and 180388626432 is 0x2A00000000):
...
.visible .const .align 8 .u64 val[3] = { 0, 180388626432, 1337 };
...
but in pr85244-1.s:
...
.extern .const .align 8 .u64 val[2];
...
Changing the 'val[2]' to 'val[]' makes the test pass.
