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Make C memory safe like Rust

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This change enables Address Sanitizer systemically w/ `make MODE=dbg`.
Our version of Rust's `unsafe` keyword is named `noasan` which is used
for two functions that do aligned memory chunking, like `strcpy.c` and
we need to fix the tiny DEFLATE code, but that's it everything else is
fabulous you can have all the fischer price security blankets you need

Best of all is we're now able to use the ASAN data in Blinkenlights to
colorize the memory dumps. See the screenshot below of a test program:

  https://justine.lol/blinkenlights/asan.png

Which is operating on float arrays stored on the stack, with red areas
indicating poisoned memory, and the green areas indicate valid memory.
This commit is contained in:
Justine Tunney 2021-02-01 03:33:13 -08:00
parent fdc3fa9148
commit 1ff9ab95ac
153 changed files with 2545 additions and 2077 deletions
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4
libc/log/log.h
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@ -39,7 +39,7 @@ void meminfo(int); /* shows malloc statistics &c. */
void memsummary(int); /* light version of same thing */
uint16_t getttycols(uint16_t);
int getttysize(int, struct winsize *) paramsnonnull();
bool isterminalinarticulate(void) nosideeffect;
bool IsTerminalInarticulate(void) nosideeffect;
char *commandvenv(const char *, const char *) nodiscard;
const char *GetAddr2linePath(void);
const char *GetGdbPath(void);
@ -47,7 +47,7 @@ const char *GetGdbPath(void);
void showcrashreports(void);
void callexitontermination(struct sigset *);
bool32 IsDebuggerPresent(bool);
bool isrunningundermake(void);
bool IsRunningUnderMake(void);
/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § liblog » logging ─╬─│┼