zig/test/behavior/bugs/4954.zig
Andrew Kelley 0bc9635490 stage2: add debug info for locals in the LLVM backend
Adds 2 new AIR instructions:
 * dbg_var_ptr
 * dbg_var_val

Sema no longer emits dbg_stmt AIR instructions when strip=true.

LLVM backend: fixed lowerPtrToVoid when calling ptrAlignment on
the element type is problematic.

LLVM backend: fixed alloca instructions improperly getting debug
location annotated, causing chaotic debug info behavior.

zig_llvm.cpp: fixed incorrect bindings for a function that should use
unsigned integers for line and column.

A bunch of C test cases regressed because the new dbg_var AIR
instructions caused their operands to be alive, exposing latent bugs.
Mostly it's just a problem that the C backend lowers mutable
and const slices to the same C type, so we need to represent that in the
C backend instead of printing two duplicate typedefs.
2022-03-13 03:41:31 -04:00

15 lines
369 B
Zig

const builtin = @import("builtin");
fn f(buf: []u8) void {
_ = &buf[@sizeOf(u32)];
}
test "crash" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
var buf: [4096]u8 = undefined;
f(&buf);
}