https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80094
--- Comment #1 from Vincent Brillault <git at lerya dot net> --- I've added a patch on the gist (https://gist.github.com/Feandil/55c104a4e9f5e6c72ce610b152ce37c3#file-gcc-debug-reproducer-patch) that instrument plugin.c to show the hash map content. Running the reproducer with a patched gcc should produce something similar to: ``` [...] Testing known plugins Before insertion 1(basic_plugin_1): 0x169a6e0 (basic_plugin_1) 2(basic_plugin_2): 0x169a6e8 (basic_plugin_2) 3(basic_plugin_3): 0x169a6f0 (basic_plugin_3) 4(basic_plugin_4): 0x169a6f8 (basic_plugin_4) 5(basic_plugin_5): 0x169a700 (basic_plugin_5) 6(basic_plugin_6): 0x169a708 (basic_plugin_6) 7(basic_plugin_7): 0x169a710 (basic_plugin_7) 8(basic_plugin_8): 0x169a6b0 (basic_plugin_8) 9(basic_plugin_9): 0x169a6b8 (basic_plugin_9) 10(basic_plugin_10): 0x169a6c0 (basic_plugin_10) 11(basic_plugin_11): (nil) Inserting basic_plugin_11 Testing known plugins After insertion 1(basic_plugin_1): (nil) 2(basic_plugin_2): (nil) 3(basic_plugin_3): (nil) 4(basic_plugin_4): (nil) 5(basic_plugin_5): (nil) 6(basic_plugin_6): (nil) 7(basic_plugin_7): (nil) 8(basic_plugin_8): (nil) 9(basic_plugin_9): (nil) 10(basic_plugin_10): (nil) 11(basic_plugin_11): 0x16a8048 (basic_plugin_11) cc1: error: plugin basic_plugin_1 should be specified before -fplugin-arg-basic_plugin_1-enable in the command line (null):0: confused by earlier errors, bailing out make: *** [Makefile:12: test] Error 1 ``` Please note that depending on your system and your luck, you might actually be able to have collisions in the hash...
