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...name moved as well, that's not the same as keeping the same function as far as debug info metadata is concerned) > I compile this with '-O0 -g'. A 'break main'/'run'/'break strlen'/'cont' > gives a relevant stack trace: > > #0 __strlen_sse2_pminub () at > ../sysdeps/x86_64/multiarch/strlen-sse2-pminub.S:33 > #1 0x00005555555587ff in __dfsw_strlen (s=0x55555556fe17 "foo", > s_label=<optimized out>, ret_label=0x7fffffffddee) > at llvm/projects/compiler-rt/lib/dfsan/dfsan_custom.cc:203 > #2 0x000055555556bbd...

Hi Peter, After discovering several bugs in ArgumentPromotion and DeadArgumentElimination where llvm::Functions were replaced with similar functions (with the same name) to transform their type in some way, I started looking at all calls to llvm::Function::takeName to see if there were any other debug info quality bugs in similar callers. One such caller is the DataFlowSanitizer, and I don't

...e same function as far as debug info >> metadata is concerned) >> >> >>> I compile this with '-O0 -g'. A 'break main'/'run'/'break strlen'/'cont' >>> gives a relevant stack trace: >>> >>> #0 __strlen_sse2_pminub () at >>> ../sysdeps/x86_64/multiarch/strlen-sse2-pminub.S:33 >>> #1 0x00005555555587ff in __dfsw_strlen (s=0x55555556fe17 "foo", >>> s_label=<optimized out>, ret_label=0x7fffffffddee) >>> at llvm/projects/compiler-rt/lib/dfsan/dfsan_custom.c...

...per is > created > separately. > > > >>> I compile this with '-O0 -g'. A 'break main'/'run'/'break > strlen'/'cont' > > >>> gives a relevant stack trace: > > >>> > > >>> #0 __strlen_sse2_pminub () at > > >>> ../sysdeps/x86_64/multiarch/strlen-sse2-pminub.S:33 > > >>> #1 0x00005555555587ff in __dfsw_strlen (s=0x55555556fe17 "foo", > > >>> s_label=<optimized out>, ret_label=0x7fffffffddee) > > >>> at llvm/proje...

...; > > >>> I compile this with '-O0 -g'. A 'break main'/'run'/'break > > > strlen'/'cont' > > > > >>> gives a relevant stack trace: > > > > >>> > > > > >>> #0 __strlen_sse2_pminub () at > > > > >>> ../sysdeps/x86_64/multiarch/strlen-sse2-pminub.S:33 > > > > >>> #1 0x00005555555587ff in __dfsw_strlen (s=0x55555556fe17 "foo", > > > > >>> s_label=<optimized out>, ret_label=0x7fffffffddee) > >...