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Hash : 7fa4b5b7
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Date : 2024-05-06T17:28:07
jerror.c: Silence MSan uninitialized value warning If an error manager instance is passed to jpeg_std_error(), then its format_message() method will point to the format_message() function in jerror.c. The format_message() function passes all eight values from the jpeg_error_mgr::msg_parm.i[] array as arguments to snprintf()/_snprintf_s(), even if the format string doesn't use all of those values. Subsequently invoking one of the ERREXIT[1-6]() macros will leave the unused values uninitialized, and if the -fsanitize-memory-param-retval option (introduced in Clang 14) is enabled (which it is by default in Clang 16 and later), then MSan will complain when the format_message() function tries to pass the uninitialized-but-unused values as function arguments. This commit modifies jpeg_std_error() so that it zeroes out the error manager instance passed to it, thus working around the warning as well as simplifying the code. Closes #761
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- build.yml
