• Lynn Boger's avatar
    runtime: handle bad ftab index in symtab.go · b2d34fa5
    Lynn Boger authored
    If a program has had its text section split into multiple
    sections then the ftab that is built is based on addresses
    prior to splitting.  That means all the function addresses
    are there and correct because of relocation but the
    but the computed idx won't always match up quite right and
    in some cases go beyond the end of the table, causing a panic.
    
    To resolve this, determine if the idx is too large and if it is,
    set it to the last index in ftab.  Then search backward to find the
    matching function address.
    
    Fixes #17854
    
    Change-Id: I6940e76a5238727b0a9ac23dc80000996db2579a
    Reviewed-on: https://go-review.googlesource.com/32972Reviewed-by: default avatarDavid Chase <drchase@google.com>
    b2d34fa5
symtab.go 19.3 KB