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openidea/smoke
Vadim Lazukandl0ng-ai 565ada6b86 feat(dap): debug C/C++ with GDB's native DAP interpreter (#2412)
* feat(dap): debug C/C++ with GDB's native DAP interpreter

Fixes #2338

Native debugging was LLDB-only (lldb-dap, CodeLLDB), so toolchains and
embedded setups that ship GDB (pretty printers, .gdbinit, gdbserver
targets) had no debugger in the IDE. Adds a built-in "gdb" adapter:
`gdb -i dap` over stdio, with an install hint. GDB's DAP interpreter
shipped in GDB 14, so a launch with an older GDB is refused with the
found and the required version in the message (prepare_gdb, a probe
like debugpy's). C/C++ run configurations pick the debugger in the
Debug adapter control - GDB is an explicit choice there, the default
stays lldb-dap. The c-app fixture (C and C++ entry points) is debugged
with GDB in the language smoke; real_adapters gains a gdb case that
skips itself without a GDB 14+ on PATH.

* fix(dap): start GDB 15 sessions with the launch after the configuration

GDB 15 starts the program inside its launch request, so the launch-first
order every other adapter uses races the breakpoint upload: the run can
be past the breakpoints before setBreakpoints lands, and configurationDone
is refused with notStopped while the program is off. GDB 14 runs the
program at configurationDone and 16+ defers the whole launch there, so
both are fine with launch-first; 15.x is the one version that needs the
launch to go out after configurationDone. The order now follows a
gdb --version probe (only for the gdb adapter); a fake adapter speaking
GDB 15's wire behavior pins the ordering and the notStopped refusal.

* fix(dap): harden GDB startup and expression evaluation

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Co-authored-by: l0ng-ai <24760907+l0ng-ai@users.noreply.github.com>
2026-11-10 13:49:14 +08:00
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