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tests: use a more portable way of determining the return address in the test code

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This commit is contained in:
kcbanner 2023-07-12 18:41:53 -04:00
parent b18031335a
commit 06bf2e048b
2 changed files with 11 additions and 12 deletions
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6
test/standalone/dwarf_unwinding/shared_lib.c
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@ -8,17 +8,15 @@ __attribute__((noinline)) void frame1(
void** expected,
void** unwound,
void (*frame2)(void** expected, void** unwound)) {
expected[2] = &&frame_2_ret;
expected[3] = __builtin_extract_return_addr(__builtin_return_address(0));
frame2(expected, unwound);
frame_2_ret:
}
LIB_API void frame0(
void** expected,
void** unwound,
void (*frame2)(void** expected, void** unwound)) {
expected[3] = &&frame_1_ret;
expected[4] = __builtin_extract_return_addr(__builtin_return_address(0));
frame1(expected, unwound, frame2);
frame_1_ret:
}

17
test/standalone/dwarf_unwinding/shared_lib_unwind.zig
View File

@ -2,7 +2,7 @@ const std = @import("std");
const debug = std.debug;
const testing = std.testing;
noinline fn frame4(expected: *[4]usize, unwound: *[4]usize) void {
noinline fn frame4(expected: *[5]usize, unwound: *[5]usize) void {
expected[0] = @returnAddress();
var context: debug.ThreadContext = undefined;
@ -17,26 +17,27 @@ noinline fn frame4(expected: *[4]usize, unwound: *[4]usize) void {
}
}
noinline fn frame3(expected: *[4]usize, unwound: *[4]usize) void {
noinline fn frame3(expected: *[5]usize, unwound: *[5]usize) void {
expected[1] = @returnAddress();
frame4(expected, unwound);
}
fn frame2(expected: *[4]usize, unwound: *[4]usize) callconv(.C) void {
fn frame2(expected: *[5]usize, unwound: *[5]usize) callconv(.C) void {
expected[2] = @returnAddress();
frame3(expected, unwound);
}
extern fn frame0(
expected: *[4]usize,
unwound: *[4]usize,
frame_2: *const fn (expected: *[4]usize, unwound: *[4]usize) callconv(.C) void,
expected: *[5]usize,
unwound: *[5]usize,
frame_2: *const fn (expected: *[5]usize, unwound: *[5]usize) callconv(.C) void,
) void;
pub fn main() !void {
if (!std.debug.have_ucontext or !std.debug.have_getcontext) return;
var expected: [4]usize = undefined;
var unwound: [4]usize = undefined;
var expected: [5]usize = undefined;
var unwound: [5]usize = undefined;
frame0(&expected, &unwound, &frame2);
try testing.expectEqual(expected, unwound);
}