On Mac, zig build fails with SIGSEGV when including Chipmunk headers

[jpochyla]

main.zig:

const c = @cImport({
    @cInclude("chipmunk/chipmunk.h");
});

pub fn main() anyerror!void {
	// commenting out following line fixes the crash
    const space: *c.cpSpace = undefined;
}

build.zig:

const Builder = @import("std").build.Builder;

pub fn build(b: *Builder) void {
    const mode = b.standardReleaseOptions();
    const exe = b.addExecutable("testcase", "src/main.zig");
    exe.setBuildMode(mode);

	// required by chipmunk/chipmunk_types.h 
    exe.linkFramework("ApplicationServices");
    exe.addFrameworkDir("/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks");

	// homebrew Chipmunk headers
    exe.addIncludeDir("/usr/local/include");

    exe.install();

    const run_cmd = exe.run();
    run_cmd.step.dependOn(b.getInstallStep());

    const run_step = b.step("run", "Run the app");
    run_step.dependOn(&run_cmd.step);
}

Compiling:

❯ /usr/local/Cellar/zig/HEAD-c522699/bin/zig build-exe /Users/jpochyla/Projects/jpochyla/testcase/src/main.zig --cache-dir /Users/jpochyla/Projects/jpochyla/testcase/zig-cache --name testcase -I /usr/local/include -F /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks -framework ApplicationServices --cache on
fish: '/usr/local/Cellar/zig/HEAD-c522…' terminated by signal SIGSEGV (Address boundary error)

Platform: MacOS 10.14.6
Zig: 0.5.0+c522699
Chipmunk: 7.0.3 from Homebrew

[LemonBoy]

I cannot reproduce the problem on linux, can you get a backtrace using gdb / lldb ?

[mikdusan]

reproduced on macOS 10.15.2, zig 0.5.0+c522699f2, chipmunk 7.0.3:

(lldb) target create "zig"
Current executable set to 'zig' (x86_64).
(lldb) settings set -- target.run-args  "build-obj" "main.zig" "-I" "Chipmunk-7.0.3/include" "-F" "/Applications/Xcode_11.3.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks"
Process 29126 launched: '/Users/mike/project/zig/work/_build/zig' (x86_64)
Process 29126 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x16e07cb)
    frame #0: 0x00000001043f72d3 zig`llvm::APInt::countLeadingZerosSlowCase() const + 35
zig`llvm::APInt::countLeadingZerosSlowCase:
->  0x1043f72d3 <+35>: movq   (%rsi,%rdi,8), %rdi
    0x1043f72d7 <+39>: testq  %rdi, %rdi
    0x1043f72da <+42>: jne    0x1043f72e9               ; <+57>
    0x1043f72dc <+44>: addl   $0x40, %eax
Target 0: (zig) stopped.
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x16e07cb)
  * frame #0: 0x00000001043f72d3 zig`llvm::APInt::countLeadingZerosSlowCase() const + 35
    frame #1: 0x000000010032b266 zig`llvm::APInt::countLeadingZeros(this=0x000000010a5600b8) const at APInt.h:1600:12
    frame #2: 0x000000010032b1fb zig`llvm::APInt::getActiveBits(this=0x000000010a5600b8) const at APInt.h:1532:54
    frame #3: 0x000000010032b101 zig`llvm::APInt::ugt(this=0x000000010a5600b8, RHS=18446744073709551615) const at APInt.h:1264:32
    frame #4: 0x00000001003227bf zig`llvm::APInt::getLimitedValue(this=0x000000010a5600b8, Limit=18446744073709551615) const at APInt.h:482:12
    frame #5: 0x0000000100322785 zig`::ZigClangAPInt_getLimitedValue(self=0x000000010a5600b8, limit=18446744073709551615) at zig_clang.cpp:2055:20
    frame #6: 0x00000001002ba367 zig`translate_c.transInitListExprArray(rp=translate_c.RestorePoint @ 0x00007ffeefbfd108, scope=0x000000010b9b8ef8, loc=<unavailable>, expr=0x00000001095432b0, ty=0x000000010a560090, used=used) at translate_c.zig:1987:52
    frame #7: 0x000000010027af22 zig`translate_c.transInitListExpr(rp=translate_c.RestorePoint @ 0x00007ffeefbfd108, scope=0x000000010b9b8ef8, expr=0x00000001095432b0, used=used) at translate_c.zig:2062:38
    frame #8: 0x000000010020521c zig`translate_c.transStmt(rp=translate_c.RestorePoint @ 0x00007ffeefbfd108, scope=0x000000010b9b8ef8, stmt=0x00000001095432b0, result_used=used, lrvalue=r_value) at translate_c.zig:1026:55
    frame #9: 0x0000000100216819 zig`translate_c.transExpr(rp=translate_c.RestorePoint @ 0x00007ffeefbfd108, scope=0x000000010b9b8ef8, expr=0x00000001095432b0, used=used, lrvalue=r_value) at translate_c.zig:1877:21
    frame #10: 0x00000001001c067e zig`translate_c.transExprCoercing(rp=translate_c.RestorePoint @ 0x00007ffeefbfd108, scope=0x000000010b9b8ef8, expr=0x00000001095432b0, used=used, lrvalue=r_value) at translate_c.zig:1904:21
    frame #11: 0x000000010016b6fe zig`translate_c.visitVarDecl(c=0x00007ffeefbfd820, var_decl=0x0000000109542f48) at translate_c.zig:580:30
    frame #12: 0x000000010014bf6e zig`translate_c.declVisitor(c=0x00007ffeefbfd820, decl=0x0000000109542f48) at translate_c.zig:405:32
    frame #13: 0x0000000100147b61 zig`translate_c.declVisitorC(context=0x00007ffeefbfd820, decl=0x0000000109542f48) at translate_c.zig:376:16
    frame #14: 0x00000001006bfb69 zig`clang::ASTUnit::visitLocalTopLevelDecls(void*, bool (*)(void*, clang::Decl const*)) + 265
    frame #15: 0x000000010031fd00 zig`::ZigClangASTUnit_visitLocalTopLevelDecls(self=0x000000010a066c00, context=0x00007ffeefbfd820, Fn=(zig`translate_c.declVisitorC at translate_c.zig:374))(void *, const ZigClangDecl *)) at zig_clang.cpp:1524:54
    frame #16: 0x0000000100140600 zig`translate_c.translate(backing_allocator=0x00000001059f77c8, args_begin=0x0000000109c2f510, args_end=0x0000000109c2f5f8, errors=0x00007ffeefbfda00, resources_path="/Users/mike/project/zig/work/lib/include") at translate_c.zig:315:49
    frame #17: 0x000000010013fb9c zig`stage2_translate_c(out_ast=0x00007ffeefbfddd0, out_errors_ptr=0x00007ffeefbfdde0, out_errors_len=0x00007ffeefbfddd8, args_begin=0x0000000109c2f510, args_end=0x0000000109c2f5f8, resources_path="/Users/mike/project/zig/work/lib/include") at stage1.zig:99:38
    frame #18: 0x00000001000c3de7 zig`ir_analyze_instruction_c_import(ira=0x0000000109c2ea60, instruction=0x000000010989fee0) at ir.cpp:23945:20
    frame #19: 0x0000000100085337 zig`ir_analyze_instruction_base(ira=0x0000000109c2ea60, instruction=0x000000010989fee0) at ir.cpp:28776:20
    frame #20: 0x0000000100083ecb zig`ir_analyze(codegen=0x000000010a01e400, old_exec=0x0000000109a1ae30, new_exec=0x0000000109a19bf0, expected_type=0x0000000000000000, expected_type_source_node=0x0000000000000000) at ir.cpp:29027:42
    frame #21: 0x00000001000824df zig`ir_eval_const_value(codegen=0x000000010a01e400, scope=0x0000000109829ee0, node=0x000000010982a330, expected_type=0x0000000000000000, backward_branch_count=0x00007ffeefbfe180, backward_branch_quota=0x00007ffeefbfe178, fn_entry=0x0000000000000000, c_import_buf=0x0000000000000000, source_node=0x000000010982a330, exec_name=0x000000010a04ae68, parent_exec=0x0000000000000000, expected_type_source_node=0x0000000000000000, undef_allowed=LazyOk) at ir.cpp:12097:28
    frame #22: 0x0000000100010f21 zig`analyze_const_value(g=0x000000010a01e400, scope=0x0000000109829ee0, node=0x000000010982a330, type_entry=0x0000000000000000, type_name=0x000000010a04ae68, undef=LazyOk) at analyze.cpp:1107:12
    frame #23: 0x0000000100014afe zig`resolve_decl_var(g=0x000000010a01e400, tld_var=0x000000010982ad10, allow_lazy=true) at analyze.cpp:3936:22
    frame #24: 0x0000000100012f5f zig`resolve_top_level_decl(g=0x000000010a01e400, tld=0x000000010982ad10, source_node=0x000000010982a870, allow_lazy=true) at analyze.cpp:4128:17
    frame #25: 0x00000001000f5cb1 zig`ir_analyze_decl_ref(ira=0x0000000109a1b780, source_instruction=0x00000001098b1a50, tld=0x000000010982ad10) at ir.cpp:20371:5
    frame #26: 0x00000001000cd325 zig`ir_analyze_instruction_decl_ref(ira=0x0000000109a1b780, instruction=0x00000001098b1a50) at ir.cpp:27400:38
    frame #27: 0x0000000100085751 zig`ir_analyze_instruction_base(ira=0x0000000109a1b780, instruction=0x00000001098b1a50) at ir.cpp:28860:20
    frame #28: 0x0000000100083ecb zig`ir_analyze(codegen=0x000000010a01e400, old_exec=0x00000001098b89a0, new_exec=0x00000001098bd7e0, expected_type=0x00000001098beb30, expected_type_source_node=0x000000010982a5f0) at ir.cpp:29027:42
    frame #29: 0x0000000100027ae1 zig`analyze_fn_ir(g=0x000000010a01e400, fn=0x00000001098bd760, return_type_node=0x000000010982a5f0) at analyze.cpp:4721:34
    frame #30: 0x0000000100016d43 zig`analyze_fn_body(g=0x000000010a01e400, fn_table_entry=0x00000001098bd760) at analyze.cpp:4834:5
    frame #31: 0x0000000100017dfe zig`semantic_analyze(g=0x000000010a01e400) at analyze.cpp:4946:13
    frame #32: 0x000000010004ae3f zig`gen_root_source(g=0x000000010a01e400) at codegen.cpp:9511:9
    frame #33: 0x0000000100049101 zig`codegen_build_and_link(g=0x000000010a01e400) at codegen.cpp:10517:13
    frame #34: 0x0000000100006eb5 zig`main(argc=7, argv=0x00007ffeefbff830) at main.cpp:1293:17
    frame #35: 0x00007fff722187fd libdyld.dylib`start + 1

[mikdusan]

Here's a reproduction:

typedef int uuid_t[16];
static const uuid_t UUID_NULL __attribute__ ((unused)) = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};