https://gcc.gnu.org/g:d52669acc6829c93270b9014af7a681dbd694c39
commit r16-6979-gd52669acc6829c93270b9014af7a681dbd694c39 Author: Jakub Jelinek <[email protected]> Date: Thu Jan 22 13:54:08 2026 +0100 testsuite: Add testcase for already fixed PR [PR123753] This testcase started to ICE with r16-6671, since r16-6741 it has been miscompiled and finally fixed with r16-6976. 2026-01-22 Jakub Jelinek <[email protected]> PR tree-optimization/123753 * gcc.c-torture/execute/pr123753.c: New test. Diff: --- gcc/testsuite/gcc.c-torture/execute/pr123753.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/gcc/testsuite/gcc.c-torture/execute/pr123753.c b/gcc/testsuite/gcc.c-torture/execute/pr123753.c new file mode 100644 index 000000000000..e3d403d95ad8 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr123753.c @@ -0,0 +1,25 @@ +/* PR tree-optimization/123753 */ + +typedef int V __attribute__((__vector_size__ (8))); +typedef short W __attribute__((__vector_size__ (8))); + +union { unsigned short u[4]; W w; } u; +V v; + +V +foo () +{ + u.w--; + V r = v + u.u[0]; + return r; +} + +int +main () +{ + if (sizeof (int) != 4 || sizeof (short) != 2) + return 0; + V x = foo (); + if (x[0] != (unsigned short) -1 || x[1] != (unsigned short) -1) + __builtin_abort (); +}
