https://llvm.org/bugs/show_bug.cgi?id=24235
Bug ID: 24235 Summary: Thunk function appears in debugger call stack Product: clang Version: trunk Hardware: PC OS: Linux Status: NEW Severity: enhancement Priority: P Component: C++ Assignee: unassignedclangb...@nondot.org Reporter: amjad.ab...@intel.com CC: dgre...@apple.com, llvmbugs@cs.uiuc.edu Classification: Unclassified Created attachment 14638 --> https://llvm.org/bugs/attachment.cgi?id=14638&action=edit Source file to reproduce the issue To reproduce the issue build the attached source file: 1. run the following command line: clang -cc1 -triple x86_64-pc-linux -emit-obj -g -O0 -o thunk-call-stack.o thunk-call-stack.cpp 2. link the object file "thunk-call-stack.o" into executable thunk-call-stack 4. run: gdb thunk-call-stack 5. add a breakpoint at line 10 and run ("b 10" --> "r") 6. show the call stack ("bt") It will look like this: (gdb) bt #0 C::foo() () at dbgThunk.cpp:10 #1 0x00000000004008bb in virtual thunk to C::foo() () at dbgThunk.cpp:10 #2 0x00000000004007e7 in main () at dbgThunk.cpp:16 while it should look like this: #0 C::foo() () at dbgThunk.cpp:10 #1 0x00000000004007e7 in main () at dbgThunk.cpp:16 The root cause for this is that the thunk function is being generated with a call instruction to the original function rather than a jump instruction. -- You are receiving this mail because: You are on the CC list for the bug.
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