Fix unnoticed exception in JS_DetectModule #889
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JS_DetectModule calls JS_AddIntrinsicRegExp but that indirectly uses `ctx->global_obj` when it tries to define `globalThis.RegExp`. There is no `ctx->global_obj` however because JS_NewContextRaw doesn't create one. It raised an "not an object" TypeError that went unnoticed because there is no error checking in JS_NewGlobalCConstructor2. Using JS_AddIntrinsicRegExpCompiler is better all around because we only need to parse regexp literals, nothing more. JS_NewGlobalCConstructor2 should probably be changed to do proper error checking, and __JS_EvalInternal to return JS_EXCEPTION when an exception is pending on entry, but I'll save that for another commit.
saghul
approved these changes
Feb 6, 2025
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Fun fact, I saw something weird happening when I was working on the build_backtrace refactor, but forgot to check again after I got it working with |
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JS_DetectModule calls JS_AddIntrinsicRegExp but that indirectly uses
ctx->global_objwhen it tries to defineglobalThis.RegExp.There is no
ctx->global_objhowever because JS_NewContextRaw doesn't create one. It raised an "not an object" TypeError that went unnoticed because there is no error checking in JS_NewGlobalCConstructor2.Using JS_AddIntrinsicRegExpCompiler is better all around because we only need to parse regexp literals, nothing more.
JS_NewGlobalCConstructor2 should probably be changed to do proper error checking, and __JS_EvalInternal to return JS_EXCEPTION when an exception is pending on entry, but I'll save that for another commit.