https://gcc.gnu.org/g:e212f5ef86f1a87c4471f8076a2cc6843ad10a20
commit r17-3156-ge212f5ef86f1a87c4471f8076a2cc6843ad10a20 Author: Kevin Stefanov <[email protected]> Date: Sat Aug 8 13:41:14 2026 +0300 OpenMP: Use VOID_TYPE_P to check for void return type in SIMD function clones. This change fixes an issue where functions decorated with: pragma omp declare simd that return void via a typedef would crash GCC with an ICE while compiling a program containing such a function, by using VOID_TYPE_P instead of directly comparing to void_type_node. New testcase added. PR middle-end/111856 gcc/ChangeLog: * omp-simd-clone.cc (simd_clone_adjust_return_type): Use VOID_TYPE_P when checking for void return type in adjusted functions. (simd_clone_adjust): Likewise. gcc/testsuite/ChangeLog: * gcc.dg/gomp/pr111856.c: New test. Signed-off-by: Kevin Stefanov <[email protected]> Diff: --- gcc/omp-simd-clone.cc | 4 ++-- gcc/testsuite/gcc.dg/gomp/pr111856.c | 11 +++++++++++ 2 files changed, 13 insertions(+), 2 deletions(-) diff --git a/gcc/omp-simd-clone.cc b/gcc/omp-simd-clone.cc index 7564846fac4c..4f189f243a0d 100644 --- a/gcc/omp-simd-clone.cc +++ b/gcc/omp-simd-clone.cc @@ -715,7 +715,7 @@ simd_clone_adjust_return_type (struct cgraph_node *node) tree t; /* Adjust the function return type. */ - if (orig_rettype == void_type_node) + if (VOID_TYPE_P (orig_rettype)) return; t = TREE_TYPE (TREE_TYPE (fndecl)); if (INTEGRAL_TYPE_P (t) || POINTER_TYPE_P (t)) @@ -1370,7 +1370,7 @@ simd_clone_adjust (struct cgraph_node *node) simd_clone_adjust_argument_types (node); targetm.simd_clone.adjust (node); tree retval = NULL_TREE; - if (orig_rettype != void_type_node) + if (!VOID_TYPE_P (orig_rettype)) { poly_uint64 veclen; if (INTEGRAL_TYPE_P (orig_rettype) || POINTER_TYPE_P (orig_rettype)) diff --git a/gcc/testsuite/gcc.dg/gomp/pr111856.c b/gcc/testsuite/gcc.dg/gomp/pr111856.c new file mode 100644 index 000000000000..ef162f585319 --- /dev/null +++ b/gcc/testsuite/gcc.dg/gomp/pr111856.c @@ -0,0 +1,11 @@ +/* PR middle-end/111856 */ +/* { dg-do compile } */ +/* { dg-options "-fopenmp-simd -O2" } */ + +typedef void T; +int array[1000]; +#pragma omp declare simd notinbranch simdlen(4) +T foo (int i) +{ + array[i] = 555; +}
