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debug/pe: do not create symbol table if FileHeader.PointerToSymbolTable is 0

Browse Source 
https://github.com/tpn/pdfs/raw/master/Microsoft Portable Executable and Common Object File Format Specification - 1999 (pecoff).doc
says this about PointerToSymbolTable:

File offset of the COFF symbol table or 0 if none is present.

Do as it says.

Fixes #17809.

Change-Id: Ib1ad83532f36a3e56c7e058dc9b2acfbf60c4e72
Reviewed-on: https://go-review.googlesource.com/33170
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Alex Brainman 2016-11-12 17:57:35 +11:00
parent dadfd14bab
commit 03ca047dd3
1 changed files with 3 additions and 0 deletions
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3
src/debug/pe/symbol.go
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@ -23,6 +23,9 @@ type COFFSymbol struct {
}
func readCOFFSymbols(fh *FileHeader, r io.ReadSeeker) ([]COFFSymbol, error) {
if fh.PointerToSymbolTable == 0 {
return nil, nil
}
if fh.NumberOfSymbols <= 0 {
return nil, nil
}