Print a backtrace when SRB2 crashes in a Unix-like environment.

• Appends to srb2home/crash-log.txt.
• Prints a stack trace into the console.
• Creates a signal handler on the child process created by I_Fork() so it can print the backtrace when it crashes.

changed title from Print a backtrace when SRB2 crashes on a Unix-like OS. to Print a backtrace when SRB2 crashes in a Unix-like environment.

changed the description

marked as a Work In Progress

Some functions used could potentially be unsafe in signal handlers, trying to find a fix.

added 1 commit

• 279a381f - Make it more async-signal-safe

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Hopefully this is better.

unmarked as a Work In Progress

resolved all discussions

resolved all discussions

added 12 commits

• 279a381f...0df5d8ff - 8 commits from branch STJr:next
• 05bf7b5e - Crash backtrace logging for NEWSIGNALHANDLER.
• 77817782 - Use file descriptors and ditch file streams, for now.
• 70c08d00 - Print the backtrace before showing the signal handler popup.
• f7b8ab32 - Make it more async-signal-safe

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added 130 commits

• f7b8ab32...760e083c - 126 commits from branch STJr:next
• 792b44a8 - Crash backtrace logging for NEWSIGNALHANDLER.
• 746f6367 - Use file descriptors and ditch file streams, for now.
• 0726bade - Print the backtrace before showing the signal handler popup.
• a4d6302e - Make it more async-signal-safe

Compare with previous version

can we have a consensus on this please
i'm getting kinda sick of being forced to link with libSegFault

added 148 commits

• a4d6302e...be496e1b - 144 commits from branch STJr:next
• 4016a2e0 - Crash backtrace logging for NEWSIGNALHANDLER.
• 5108f1f5 - Use file descriptors and ditch file streams, for now.
• bdb28a06 - Print the backtrace before showing the signal handler popup.
• a0396d5e - Make it more async-signal-safe

Compare with previous version

merged

mentioned in commit 07650041

Maybe it's late to mention this, but the Makefile should be made to add -rdynamic to LDFLAGS when compiling for UNIXCOMMON platforms (where this backtrace printer would be used). Otherwise the backtrace doesn't have function names aside from main and external library functions, which makes it nearly useless.