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authordsinclair <dsinclair@chromium.org>2017-11-29 15:53:50 +0000
committerChromium commit bot <commit-bot@chromium.org>2017-11-29 15:53:50 +0000
commitc0062b913cf7e45fc398ac96d83777ae8812f9a7 (patch)
treee620f7fadd5cd78716fa023da95ce80804d3638c /core/fpdfapi
parent7829b7048d5cf13a4f1a806fed57f2440d1b5dec (diff)
downloadpdfium-c0062b913cf7e45fc398ac96d83777ae8812f9a7.tar.xz
Revert "[CFI] Enable type generalization for LCMS"
This reverts commit 7829b7048d5cf13a4f1a806fed57f2440d1b5dec. Reason for revert: Breaking the waterfall build. Looks like it's finding a leak it wasn't before? https://build.chromium.org/p/client.pdfium/builders/linux_xfa_asan_lsan/builds/2376/steps/embeddertests/logs/stdio Original change's description: > [CFI] Enable type generalization for LCMS > > Control Flow Integrity [1] indirect call checking verifies that function > pointers only call valid functions with a matching type signature. This > condition can be too strict, a common form of 'abstraction' relies on > function pointers being cast to generalize argument pointer types to > void*. > > In LCMS these failures occur because of casts of function pointers called > as both _cmsInterpFn16 (cmsInterpFunction.Lerp16) and _cmsOPTeval16Fn (as > an argument to _cmsPipelineSetOptimizationParameters) types making it > difficult to refactor out easily. Instead, enabling the type > generalization build config weakens the type checking performed for > CFI-icall to accomodate this common type of casts. > > [1] https://www.chromium.org/developers/testing/control-flow-integrity > > Bug: 785442 > Change-Id: Ib42fb1b4e152d5042b170698c2707ebb9e0cc1ee > Reviewed-on: https://pdfium-review.googlesource.com/19250 > Commit-Queue: dsinclair <dsinclair@chromium.org> > Reviewed-by: dsinclair <dsinclair@chromium.org> TBR=tsepez@chromium.org,dsinclair@chromium.org,vtsyrklevich@chromium.org Change-Id: Ib9c26eb017733d2bf02035415221475bfbfe55c9 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: 785442 Reviewed-on: https://pdfium-review.googlesource.com/19730 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
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