[Bug sanitizer/61293] asan can not find left buffer overflow of new[]-allocated buffer, frontend help needed

[kcc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61293

--- Comment #4 from Kostya Serebryany <kcc at gcc dot gnu.org> ---
FTR, this has been implemented in Clang (Itanium ABI only for now): 
clang: http://llvm.org/viewvc/llvm-project?view=revision&revision=216434
asan: http://llvm.org/viewvc/llvm-project?rev=214711&view=rev
test:  http://llvm.org/viewvc/llvm-project?rev=216494&view=rev