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| author | Martin Storsjö <martin@martin.st> | 2021-11-26 00:34:47 +0200 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2022-06-01 11:25:49 +0300 |
| commit | 298e9cac9204b788dd6a18dba669b40acf2aaa3c (patch) | |
| tree | cdb581b2fbb7538e5ce22593fcb6e027dc083b55 /llvm/lib/MC/WinCOFFObjectWriter.cpp | |
| parent | d4022ff3310635f682e9937c8ffa4aeb0d2e2854 (diff) | |
| download | llvm-298e9cac9204b788dd6a18dba669b40acf2aaa3c.zip llvm-298e9cac9204b788dd6a18dba669b40acf2aaa3c.tar.gz llvm-298e9cac9204b788dd6a18dba669b40acf2aaa3c.tar.bz2 | |
[MC] [Win64EH] Check that the SEH unwind opcodes match the actual instructions
It's a fairly common issue that the generating code incorrectly marks
instructions as narrow or wide; check that the instruction lengths
add up to the expected value, and error out if it doesn't. This allows
catching code generation bugs.
Also check that prologs and epilogs are properly terminated, to
catch other code generation issues.
Differential Revision: https://reviews.llvm.org/D125647
Diffstat (limited to 'llvm/lib/MC/WinCOFFObjectWriter.cpp')
| -rw-r--r-- | llvm/lib/MC/WinCOFFObjectWriter.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/MC/WinCOFFObjectWriter.cpp b/llvm/lib/MC/WinCOFFObjectWriter.cpp index 1de1532..33e496b 100644 --- a/llvm/lib/MC/WinCOFFObjectWriter.cpp +++ b/llvm/lib/MC/WinCOFFObjectWriter.cpp @@ -958,7 +958,7 @@ void WinCOFFObjectWriter::assignFileOffsets(MCAssembler &Asm, for (const auto &Section : Asm) { COFFSection *Sec = SectionMap[&Section]; - if (Sec->Number == -1) + if (!Sec || Sec->Number == -1) continue; Sec->Header.SizeOfRawData = Layout.getSectionAddressSize(&Section); |