Hi, I'm getting one valgrind error of "Invalid read of size 4" with executable build by g++481 with -O2 option. Error is not reported if binary is build with g++481 with -O2 and -fno-builtin-strlen on command line. Though I think it's a valgrind false positive and my suspect g++481 optimization for this error is -foptimize-strlen, but error is not reported if binary is build with -O1 and -foptimize-strlen on command line. My queries are: does g++481 activates strlen optimization when -foptimize-strlen is enables explicitly? Is there any difference between fno-optimize-strlen and -fno-builtin-strlen? Why error is reported with "-O2" and not with "-O1 -foptimize-strlen"? Thanks, Vikas
