Bug 9783 – profiling recursive function calls yields bad tree timing

Compiling this code: int foo(int n) { if (n <= 0) return 0; return foo(n-1) + foo(n-2); } void main() { foo(30); } with "dmd -profile test.d" and exceuting it yields a trace.log containing Num Tree Func Per Calls Time Time Call 4356617 4337248 201989 0 int test.foo(int) 1 201989 0 0 _Dmain that reports that the tree time of foo was a lot larger than the tree time of its only caller.

Commits pushed to master at https://github.com/D-Programming-Language/druntime https://github.com/D-Programming-Language/druntime/commit/f84708e9cb4811ad7b71f104c7c9704672665124 fix issue 9783: fix tree time when profiling recursive functions https://github.com/D-Programming-Language/druntime/commit/187cee5ca665e314de433649df2272d9e70880e2 Merge pull request #461 from rainers/fix_profile_treetime fix issue 9783: fix tree time when profiling recursive functions

Commit pushed to phobos-1.x at https://github.com/D-Programming-Language/phobos https://github.com/D-Programming-Language/phobos/commit/3ea3ec6c8ccc2b7b8a82d12a823b6b774bb53ee6 merge D2 push #461, fix Issue 9783