https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120192
--- Comment #6 from Filip Ć tamcar <filip.stamcar at hotmail dot com> --- The full GCC command is: "gcc.exe" "-O0" "-ffunction-sections" "-fdata-sections" "-gdwarf-2" "-fno-omit-frame-pointer" "-m64" "-I" "E:\\Cache\\rust\\cargo\\registry\\src\\index.crates.io-1949cf8c6b5b557f\\ring-0.17.14\\include" "-I" "E:\\Cache\\rust\\cargo\\registry\\src\\index.crates.io-1949cf8c6b5b557f\\ring-0.17.14\\pregenerated" "-fvisibility=hidden" "-std=c1x" "-Wall" "-Wbad-function-cast" "-Wcast-align" "-Wcast-qual" "-Wconversion" "-Wmissing-field-initializers" "-Wmissing-include-dirs" "-Wnested-externs" "-Wredundant-decls" "-Wshadow" "-Wsign-compare" "-Wsign-conversion" "-Wstrict-prototypes" "-Wundef" "-Wuninitialized" "-g3" "-DNDEBUG" "-march=native" "-o" "E:\\Projects\\School\\SrednjeveskiArhivi\\target\\debug\\build\\ring-2f9bf6e1f47e27e4\\out\\73090ba2100ad232-curve25519.o" "-c" "E:\\Cache\\rust\\cargo\\registry\\src\\index.crates.io-1949cf8c6b5b557f\\ring-0.17.14\\crypto/curve25519/curve25519.c" "-freport-bug" I've attached 73090ba2100ad232-curve25519.i and 73090ba2100ad232-curve25519.s after running it with -save-temps.