// The Go runtime had re-registered the C handler with the wrong flags due to a
// typo, resulting in null pointers being passed for the info and context
// parameters to the handler.

/*
#cgo CFLAGS: -fsanitize=thread
#cgo LDFLAGS: -fsanitize=thread

#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ucontext.h>

void check_params(int signo, siginfo_t *info, void *context) {

package main

// This program failed when run under the C/C++ ThreadSanitizer.
// There was no TSAN synchronization for the call to the cgo
// traceback routine.

/*
#cgo CFLAGS: -g -fsanitize=thread
#cgo LDFLAGS: -g -fsanitize=thread

#include <pthread.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/time.h>
#include <unistd.h>

struct tracebackArg {
	uintptr_t  Context;

// license that can be found in the LICENSE file.

//go:build asan && linux && (arm64 || amd64 || loong64 || riscv64 || ppc64le)

package asan

/*
#cgo CFLAGS: -fsanitize=address
#cgo LDFLAGS: -fsanitize=address

#include <stdbool.h>
#include <stdint.h>
#include <sanitizer/asan_interface.h>

void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc) {

	ss_sp     *byte
	ss_flags  int32
	pad_cgo_0 [4]byte
	ss_size   uintptr
}

type sigcontext struct {
	sc_pc         uint64
	sc_regs       [32]uint64
	sc_flags      uint32
	sc_extcontext [0]uint64
}

type ucontext struct {
	uc_flags     uint64
	uc_link      *ucontext
	uc_stack     stackt
	uc_sigmask   usigset
	uc_x_unused  [0]uint8
	uc_pad_cgo_0 [8]byte
	uc_mcontext  sigcontext

Harshavardhana <******@****.***> 1655421048 -0700

	}
	if opts.cpu != "" {
		run = append(run, "-cpu="+opts.cpu)
	}
	if t.json {
		run = append(run, "-json")
	}

	if opts.gcflags != "" {
		build = append(build, "-gcflags=all="+opts.gcflags)
	}
	if opts.ldflags != "" {
		build = append(build, "-ldflags="+opts.ldflags)
	}
	if opts.buildmode != "" {
		build = append(build, "-buildmode="+opts.buildmode)
	}

	pkgs = opts.packages()

	mc_fpformat      uint32
	mc_ownedfp       uint32
	mc_flags         uint32
	mc_fpstate       [128]uint32
	mc_fsbase        uint32
	mc_gsbase        uint32
	mc_xfpustate     uint32
	mc_xfpustate_len uint32
	mc_spare2        [4]uint32
}

type ucontext struct {
	uc_sigmask  sigset
	uc_mcontext mcontext
	uc_link     *ucontext
	uc_stack    stackt
	uc_flags    int32
	__spare__   [4]int32
	pad_cgo_0   [12]byte

	fp_flags int32
	pad      int32
}

type mcontext struct {
	mc_gpregs gpregs
	mc_fpregs fpregs
	mc_flags  int32
	mc_pad    int32
	mc_spare  [8]uint64
}

type ucontext struct {
	uc_sigmask  sigset
	uc_mcontext mcontext
	uc_link     *ucontext
	uc_stack    stackt
	uc_flags    int32
	__spare__   [4]int32
	pad_cgo_0   [12]byte
}

type timespec struct {
	tv_sec  int64

mkdir tmp5

# First build: no external linking expected
go build -ldflags=-tmpdir=tmp1 -o $devnull ./noUseOfCgo &

# Second build: using only "runtime/cgo", expect internal linking.
go build -ldflags=-tmpdir=tmp2 -o $devnull ./usesInternalCgo &

# Third build: program uses only "runtime/cgo", so we would normally
# expect internal linking, except that cflags contain suspicious entries

			if err := os.WriteFile(cSrc, cMain, 0600); err != nil {
				t.Fatalf("failed to write C source file: %v", err)
			}

			dstBin := dir.Join(name)
			cmd, err := cc(config.cFlags...)
			if err != nil {
				t.Fatal(err)
			}
			cmd.Args = append(cmd.Args, config.ldFlags...)
			cmd.Args = append(cmd.Args, "-o", dstBin, cSrc, lib)
			mustRun(t, cmd)

			cmd = hangProneCmd(dstBin)
			replaceEnv(cmd, "LD_LIBRARY_PATH", ".")