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cosmopolitan/libc/stdio
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Justine Tunney 226aaf3547 Improve memory safety 
This commit makes numerous refinements to cosmopolitan memory handling.

The default stack size has been reduced from 2mb to 128kb. A new macro
is now provided so you can easily reconfigure the stack size to be any
value you want. Work around the breaking change by adding to your main:

    STATIC_STACK_SIZE(0x00200000);  // 2mb stack

If you're not sure how much stack you need, then you can use:

    STATIC_YOINK("stack_usage_logging");

After which you can `sort -nr o/$MODE/stack.log`. Based on the unit test
suite, nothing in the Cosmopolitan repository (except for Python) needs
a stack size greater than 30kb. There are also new macros for detecting
the size and address of the stack at runtime, e.g. GetStackAddr(). We
also now support sigaltstack() so if you want to see nice looking crash
reports whenever a stack overflow happens, you can put this in main():

    ShowCrashReports();

Under `make MODE=dbg` and `make MODE=asan` the unit testing framework
will now automatically print backtraces of memory allocations when
things like memory leaks happen. Bugs are now fixed in ASAN global
variable overrun detection. The memtrack and asan runtimes also handle
edge cases now. The new tools helped to identify a few memory leaks,
which are fixed by this change.

This change should fix an issue reported in #288 with ARG_MAX limits.
Fixing this doubled the performance of MKDEPS.COM and AR.COM yet again.
2021-10-13 17:27:13 -07:00
..
unlocked Remove more nonstandard stuff from cosmopolitan.h 2021-03-01 00:18:23 -08:00
append.internal.h Fix bugs and make improvements to redbean 2021-08-06 14:18:34 -07:00
appendd.c Add function for creating hex string literals 2021-08-07 07:05:19 -07:00
appendf.c Add function for creating hex string literals 2021-08-07 07:05:19 -07:00
appendr.c Make numerous improvements 2021-09-28 01:52:34 -07:00
appends.c Add function for creating hex string literals 2021-08-07 07:05:19 -07:00
appendw.c Add function for creating hex string literals 2021-08-07 07:05:19 -07:00
appendz.c Add function for creating hex string literals 2021-08-07 07:05:19 -07:00
clearerr.c Change license 2020-12-27 17:18:44 -08:00
dirstream.c Make numerous improvements 2021-09-28 01:52:34 -07:00
dtoa.c Support proper %g, %f, and %a float formatting 2021-03-05 10:31:16 -08:00
dumphexc.c Add function for creating hex string literals 2021-08-07 07:05:19 -07:00
fbufsize.c Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
fclose.c Remove more nonstandard stuff from cosmopolitan.h 2021-03-01 00:18:23 -08:00
fclose_s.c Change license 2020-12-27 17:18:44 -08:00
fdopen.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
feof.c Change license 2020-12-27 17:18:44 -08:00
ferror.c Change license 2020-12-27 17:18:44 -08:00
fflush.c Add /statusz page to redbean plus other enhancements 2021-04-23 18:53:57 -07:00
fflush.internal.h Remove more nonstandard stuff from cosmopolitan.h 2021-03-01 00:18:23 -08:00
fflushimpl.c Add /statusz page to redbean plus other enhancements 2021-04-23 18:53:57 -07:00
fgetc.c Fix popen_test in MODE=dbg 2021-05-01 17:13:48 -07:00
fgetln.c Improve isystem includes and magic numbers 2021-08-14 23:36:36 -07:00
fgetpos.c Change license 2020-12-27 17:18:44 -08:00
fgets.c Change license 2020-12-27 17:18:44 -08:00
fgetwc.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
fgetws.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
fileno.c Change license 2020-12-27 17:18:44 -08:00
flbf.c Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
flockfile.c Add more POSIX function stubs 2021-03-02 03:27:55 -08:00
flushers.c Remove more nonstandard stuff from cosmopolitan.h 2021-03-01 00:18:23 -08:00
flushlbf.c Remove more nonstandard stuff from cosmopolitan.h 2021-03-01 00:18:23 -08:00
fmemopen.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
fopen.c Make numerous improvements 2021-09-28 01:52:34 -07:00
fopenflags.c Fix issues with stdio needed for Lua 2021-03-06 19:04:26 -08:00
fpending.c Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
fprintf.c Change license 2020-12-27 17:18:44 -08:00
fpurge.c Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
fputc.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
fputs.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
fputwc.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
fputws.c Change license 2020-12-27 17:18:44 -08:00
fread.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
freadable.c Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
freading.c Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
freopen.c Fix freopen so it resets stream buffer (#61) 2021-03-07 12:12:02 -08:00
fscanf.c Change license 2020-12-27 17:18:44 -08:00
fseek.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
fseeko.c Add /statusz page to redbean plus other enhancements 2021-04-23 18:53:57 -07:00
fsetlocking.c Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
fsetpos.c Change license 2020-12-27 17:18:44 -08:00
ftell.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
ftello.c Add /statusz page to redbean plus other enhancements 2021-04-23 18:53:57 -07:00
fwritable.c Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
fwrite.c Improve performance of printf functions 2021-04-24 13:58:50 -07:00
fwriting.c Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
getc.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
getchar.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
getdelim.c Improve memory safety 2021-10-13 17:27:13 -07:00
getline.c Change license 2020-12-27 17:18:44 -08:00
gets.c Change license 2020-12-27 17:18:44 -08:00
getwc.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
getwchar.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
hex.internal.h Add function for creating hex string literals 2021-08-07 07:05:19 -07:00
internal.h Make numerous improvements 2021-09-28 01:52:34 -07:00
mkostemp.c Change license 2020-12-27 17:18:44 -08:00
mkostemps.c Change license 2020-12-27 17:18:44 -08:00
mkostempsm.c Change license 2020-12-27 17:18:44 -08:00
mkstemp.c Change license 2020-12-27 17:18:44 -08:00
mkstemps.c Change license 2020-12-27 17:18:44 -08:00
mktemp.c Change license 2020-12-27 17:18:44 -08:00
pclose.c Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
popen.c Fix popen_test in MODE=dbg 2021-05-01 17:13:48 -07:00
printf.c Support proper %g, %f, and %a float formatting 2021-03-05 10:31:16 -08:00
putc.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
putchar.c Change license 2020-12-27 17:18:44 -08:00
puts.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
putwc.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
putwchar.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
rewind.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
scanf.c Change license 2020-12-27 17:18:44 -08:00
setbuf.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
setbuffer.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
setlinebuf.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
setvbuf.c Reduce memory needed by ASAN morgue 2021-08-19 09:34:24 -07:00
spawn.c Improve system call polyfills 2021-03-08 10:07:02 -08:00
spawn.h Improve system call polyfills 2021-03-08 10:07:02 -08:00
spawna.c Add posix_spawn (#114) 2021-03-07 20:14:07 -08:00
spawna.internal.h Add posix_spawn (#114) 2021-03-07 20:14:07 -08:00
spawnf.c Improve LLVM compatibility a little bit 2021-05-16 20:34:46 -07:00
spawnp.c Add posix_spawn (#114) 2021-03-07 20:14:07 -08:00
stdbuf.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
stderr-init.S Make major improvements to stdio 2021-03-26 22:31:41 -07:00
stderr.c Remove more nonstandard stuff from cosmopolitan.h 2021-03-01 00:18:23 -08:00
stdin-init.S Make major improvements to stdio 2021-03-26 22:31:41 -07:00
stdin.c Remove more nonstandard stuff from cosmopolitan.h 2021-03-01 00:18:23 -08:00
stdio.h Improve memory safety 2021-10-13 17:27:13 -07:00
stdio.mk Add function for creating hex string literals 2021-08-07 07:05:19 -07:00
stdio_ext.h Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
stdout-init.S Make major improvements to stdio 2021-03-26 22:31:41 -07:00
stdout.c Add SNI support to redbean and improve SSL perf 2021-07-23 13:56:13 -07:00
system.c Make major improvements to redbean and libraries 2021-04-18 12:34:15 -07:00
systemexec.c Make major improvements to redbean and libraries 2021-04-18 12:34:15 -07:00
temp.h Add x86_64-linux-gnu emulator 2020-08-25 04:43:42 -07:00
tmpfile.c Improve LLVM compatibility a little bit 2021-05-16 20:34:46 -07:00
ungetc.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
ungetwc.c Make major improvements to stdio 2021-03-26 22:31:41 -07:00
unlocked.h Add more POSIX function stubs 2021-03-02 03:27:55 -08:00
vappendf.c Add function for creating hex string literals 2021-08-07 07:05:19 -07:00
vfprintf.c Improve performance of printf functions 2021-04-24 13:58:50 -07:00
vfscanf.c Change license 2020-12-27 17:18:44 -08:00
vprintf.c Change license 2020-12-27 17:18:44 -08:00
vscanf.c Change license 2020-12-27 17:18:44 -08:00