mozjs_sys 0.67.1

System crate for the Mozilla SpiderMonkey JavaScript engine.
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#include "gdb-tests.h"
#include "jsapi.h"  // sundry symbols not moved to more-specific headers yet

#include "jit/JitOptions.h"               // js::jit::JitOptions
#include "js/CallArgs.h"                  // JS::CallArgs, JS::CallArgsFromVp
#include "js/CompilationAndEvaluation.h"  // JS::Evaluate
#include "js/CompileOptions.h"            // JS::CompileOptions
#include "js/RootingAPI.h"                // JS::Rooted
#include "js/Value.h"                     // JS::Value

#include <stdint.h>  // uint32_t
#include <string.h>  // strlen

static bool Something(JSContext* cx, unsigned argc, JS::Value* vp) {
  JS::CallArgs args = JS::CallArgsFromVp(argc, vp);
  args.rval().setInt32(23);
  breakpoint();
  return true;
}

// clang-format off
static const JSFunctionSpecWithHelp unwind_functions[] = {
    JS_FN_HELP("something", Something, 0, 0,
"something()",
"  Test function for test-unwind."),
    JS_FS_HELP_END
};
// clang-format on

FRAGMENT(unwind, simple) {
  using namespace JS;

  JS::Rooted<JSObject*> global(cx, JS::CurrentGlobalOrNull(cx));
  if (!JS_DefineFunctionsWithHelp(cx, global, unwind_functions)) {
    return;
  }

  // baseline-eager.
  uint32_t saveThreshold = js::jit::JitOptions.baselineWarmUpThreshold;
  js::jit::JitOptions.baselineWarmUpThreshold = 0;

  int line0 = __LINE__;
  const char* bytes =
      "\n"
      "function unwindFunctionInner() {\n"
      "    return something();\n"
      "}\n"
      "\n"
      "function unwindFunctionOuter() {\n"
      "    return unwindFunctionInner();\n"
      "}\n"
      "\n"
      "unwindFunctionOuter();\n";

  JS::CompileOptions opts(cx);
  opts.setFileAndLine(__FILE__, line0 + 1);

  JS::Rooted<JS::Value> rval(cx);
  JS::EvaluateUtf8(cx, opts, bytes, strlen(bytes), &rval);

  js::jit::JitOptions.baselineWarmUpThreshold = saveThreshold;
}