debug/dwarf: formStrp uses a 64-bit value for 64-bit DWARF

No test as the only system I know that uses 64-bit DWARF is AIX.
    
    Backport of https://golang.org/cl/84379, which will be in Go 1.11.
    Backporting now for AIX support in gccgo.
    
    Reviewed-on: https://go-review.googlesource.com/87296

From-SVN: r256474
This commit is contained in:
Ian Lance Taylor 2018-01-11 01:51:16 +00:00
parent b33b5363d8
commit 840573729e
2 changed files with 13 additions and 2 deletions

View File

@ -1,4 +1,4 @@
19d94969c5202c07b3b166079b9f4ebbb52dfa6b
1176dd2b53f2d2b826b599a126f3f9828283cec3
The first line of this file holds the git revision number of the last
merge done from the gofrontend repository.

View File

@ -461,7 +461,18 @@ func (b *buf) entry(atab abbrevTable, ubase Offset) *Entry {
case formString:
val = b.string()
case formStrp:
off := b.uint32() // offset into .debug_str
var off uint64 // offset into .debug_str
is64, known := b.format.dwarf64()
if !known {
b.error("unknown size for DW_FORM_strp")
} else if is64 {
off = b.uint64()
} else {
off = uint64(b.uint32())
}
if uint64(int(off)) != off {
b.error("DW_FORM_strp offset out of range")
}
if b.err != nil {
return nil
}