Author: teemperor Date: Wed May 23 02:02:40 2018 New Revision: 333069 URL: http://llvm.org/viewvc/llvm-project?rev=333069&view=rev Log: Fix unaligned memory access when reading INPUT_FILE_OFFSETS data
Summary: The blob data is unaligned, so we also should read it as such. Should fix the random failures with the sanitizer builds. Reviewers: rsmith, v.g.vassilev Reviewed By: v.g.vassilev Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D47247 Modified: cfe/trunk/lib/Serialization/ASTReader.cpp Modified: cfe/trunk/lib/Serialization/ASTReader.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/ASTReader.cpp?rev=333069&r1=333068&r2=333069&view=diff ============================================================================== --- cfe/trunk/lib/Serialization/ASTReader.cpp (original) +++ cfe/trunk/lib/Serialization/ASTReader.cpp Wed May 23 02:02:40 2018 @@ -4811,7 +4811,8 @@ bool ASTReader::readASTFileControlBlock( unsigned NumInputFiles = Record[0]; unsigned NumUserFiles = Record[1]; - const uint64_t *InputFileOffs = (const uint64_t *)Blob.data(); + const llvm::support::unaligned_uint64_t *InputFileOffs = + (const llvm::support::unaligned_uint64_t *)Blob.data(); for (unsigned I = 0; I != NumInputFiles; ++I) { // Go find this input file. bool isSystemFile = I >= NumUserFiles; _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
