[go] debug/elf: handle program header count overflow

[Gopher Robot (Gerrit)]

Gopher Robot submitted the change

Change information

Commit message:

debug/elf: handle program header count overflow

ELF files only have a 16-bit count for program headers.
To handle the very rare case of larger files,
a large program header count is stored as 0xffff
and the first section header info field holds the actual count.

Fixes #78217

Change-Id: I35c7e15025a9677473cb43d09a41f17f75443731

Reviewed-on: https://go-review.googlesource.com/c/go/+/758040

Reviewed-by: David Chase <drc...@google.com>

LUCI-TryBot-Result: Go LUCI <golang...@luci-project-accounts.iam.gserviceaccount.com>

Auto-Submit: Ian Lance Taylor <ia...@golang.org>

Reviewed-by: Dmitri Shuralyov <dmit...@google.com>

Files:

• M src/debug/elf/file.go
• M src/debug/elf/file_test.go

Change size: M

Delta: 2 files changed, 151 insertions(+), 46 deletions(-)

Branch: refs/heads/master

Submit Requirements:

• Code-Review: +1 by Dmitri Shuralyov, +2 by David Chase
• TryBots-Pass: LUCI-TryBot-Result+1 by Go LUCI

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Gerrit

Gerrit-MessageType: merged

Gerrit-Project: go

Gerrit-Branch: master

Gerrit-Change-Id: I35c7e15025a9677473cb43d09a41f17f75443731

Gerrit-Change-Number: 758040

Gerrit-PatchSet: 2

Gerrit-Owner: Ian Lance Taylor <ia...@golang.org>

Gerrit-Reviewer: David Chase <drc...@google.com>

Gerrit-Reviewer: Dmitri Shuralyov <dmit...@google.com>

Gerrit-Reviewer: Go LUCI <golang...@luci-project-accounts.iam.gserviceaccount.com>

Gerrit-Reviewer: Gopher Robot <go...@golang.org>

Gerrit-Reviewer: Ian Lance Taylor <ia...@golang.org>

Gerrit-CC: Dmitri Shuralyov <dmit...@golang.org>