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Justin Ethier 2016-08-10 20:38:46 -04:00
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docs/Development.md
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@ -45,14 +45,16 @@ This confirms that the compiler - with any changes - can still be built from sou
## Debugging the Runtime ## Debugging the Runtime
Cyclone should never segfault unless there is a bug in the runtime/compiler. To debug a segfault using the C compiler's tools, first rebuilt Cyclone with debugging turned on. With GCC, you can do this by changing two lines at the top of `Makefile.config` to use the `-g` option instead of `-O2`. For example: Cyclone should never segfault unless there is a bug in the runtime/compiler. To debug a segfault using the C compiler's tools, first rebuilt Cyclone with debugging turned on. With GCC, you can do this by changing two lines at the top of `Makefile.config` to use the `-g` option instead of `-O2`.
For example:
CFLAGS ?= -g -Wall -Iinclude -L. CFLAGS ?= -g -Wall -Iinclude -L.
COMP_CFLAGS ?= -g -Wall -I$(PREFIX)/include -L$(PREFIX)/lib COMP_CFLAGS ?= -g -Wall -I$(PREFIX)/include -L$(PREFIX)/lib
Then rebuild/reinstall everything. This may be easier to do using the cyclone-bootstrap repository. Then rebuild/reinstall everything. This may be easiest to do using the [cyclone-bootstrap](https://github.com/justinethier/cyclone-bootstrap) repository: just modify `Makefile.config` and follow the install instructions.
Anyway, now that the C compiler is producing debugging information, you can use `gdb` to debug the segfault directly: Now that the C compiler is producing debugging information, you can use `gdb` to debug the segfault directly:
$ gdb ./crashing-program $ gdb ./crashing-program
(gdb) run (gdb) run