Commit cf950691cb967826c4df5bede1bb5c654fede129 | zig

author	Quint Daenen <quint@daenen.email> 2026-05-04 20:34:15+02:00
committer	Ali Cheraghi <alichraghi@noreply.codeberg.org> 2026-06-18 13:38:58+02:00
log	cf950691cb967826c4df5bede1bb5c654fede129
tree	d8a2c8048aedeca5ab0e6610d0ee7cd39c6269c3
parent	7140d08334de7d3c0c1342a0c2eb8a8db638b5df

fix(spirv): error cleanly on integer types wider than 64 bits

resolveType called Module.intType for any integer width, which
asserted backing_bits <= 64 for big-int types. Reject these widths
in resolveType with a fail() so users get a diagnostic instead of
a compiler panic.

1 files changed, 4 insertions(+), 0 deletions(-)

src
- codegen
  - spirv
    CodeGen.zig

src/codegen/spirv/CodeGen.zig+4

 @@ -1620,6 +1620,10 @@ fn resolveType(cg: *CodeGen, ty: Type, repr: Repr) Error!Id {
                 return try cg.module.opaqueType("u0");
             }
             const int_info = ty.intInfo(zcu);
+            const backing_bits, const big_int = cg.module.backingIntBits(int_info.bits);
+            if (big_int and backing_bits > 64) {
+                return cg.fail("integer width of {} bits is not yet supported on the SPIR-V backend", .{int_info.bits});
+            }
             return try cg.module.intType(int_info.signedness, int_info.bits);
         },
         .@"enum" => return try cg.resolveType(ty.intTagType(zcu), repr),