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test: improve logic for generating stack trace test combinations

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Alex Rønne Petersen 2026-02-02 11:24:42 +01:00 • committed by Andrew Kelley
parent e5e4602b18
commit 2fce12b42a
1 changed files with 43 additions and 7 deletions
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50
test/src/StackTrace.zig
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@ -55,7 +55,7 @@ fn addCaseTarget(
};
};
const both_pie = switch (target.result.os.tag) {
.fuchsia, .openbsd => false,
.fuchsia => false,
else => true,
};
const both_libc = switch (target.result.os.tag) {
@ -63,8 +63,30 @@ fn addCaseTarget(
else => !target.result.requiresLibC(),
};
// On aarch64-macos, FP unwinding is blessed by Apple to always be reliable, and std.debug knows this.
const fp_unwind_is_safe = target.result.cpu.arch == .aarch64 and target.result.os.tag.isDarwin();
// See `std.debug.StackIterator.fp_usability` logic.
const fp_usability: enum { useless, unsafe, safe, ideal } = switch (target.result.cpu.arch) {
.alpha,
.csky,
.microblaze,
.microblazeel,
.mips,
.mipsel,
.mips64,
.mips64el,
.sh,
.sheb,
=> .useless,
.hexagon,
.powerpc,
.powerpcle,
.powerpc64,
.powerpc64le,
.sparc,
.sparc64,
=> .ideal,
.aarch64 => if (target.result.os.tag.isDarwin()) .safe else .unsafe,
else => .unsafe,
};
const supports_unwind_tables = switch (target.result.os.tag) {
// x86-windows just has no way to do stack unwinding other then using frame pointers.
.windows => target.result.cpu.arch != .x86,
@ -86,10 +108,24 @@ fn addCaseTarget(
const only_fp: @This() = .{ .tables = false, .fp = true };
};
const unwind_info_vals: []const UnwindInfo = switch (config.unwind) {
.none => &.{.none},
.any => &.{ .only_tables, .only_fp, .both },
.safe => if (fp_unwind_is_safe) &.{ .only_tables, .only_fp, .both } else &.{ .only_tables, .both },
.no_safe => if (fp_unwind_is_safe) &.{.none} else &.{ .none, .only_fp },
.none => switch (fp_usability) {
.useless => &.{ .none, .only_fp },
.unsafe, .safe => &.{.none},
.ideal => &.{},
},
.any => switch (fp_usability) {
.useless => &.{ .only_tables, .both },
.unsafe, .safe, .ideal => &.{ .only_tables, .only_fp, .both },
},
.safe => switch (fp_usability) {
.useless, .unsafe => &.{ .only_tables, .both },
.safe, .ideal => &.{ .only_tables, .only_fp, .both },
},
.no_safe => switch (fp_usability) {
.useless, .unsafe => &.{ .none, .only_fp },
.safe => &.{.none},
.ideal => &.{},
},
};
for (use_llvm_vals) |use_llvm| {