andre/cosmopolitan
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Make C memory safe like Rust

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

4
test/dsp/core/test.mk
View File

@ -46,10 +46,6 @@ o/$(MODE)/test/dsp/core/%.com.dbg: \
$(APE)
@$(APELINK)
# $(TEST_DSP_CORE_OBJS): \
# OVERRIDE_CFLAGS += \
# -fsanitize=address
.PHONY: o/$(MODE)/test/dsp/core
o/$(MODE)/test/dsp/core: \
$(TEST_DSP_CORE_BINS) \

33
test/dsp/scale/magikarp_test.c
View File

@ -25,6 +25,7 @@
#include "libc/math.h"
#include "libc/mem/mem.h"
#include "libc/nexgen32e/x86feature.h"
#include "libc/runtime/gc.h"
#include "libc/str/str.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
@ -40,9 +41,9 @@ TEST(magikarp, testConvolve) {
u"λλ  λλ  λλ  λλ  "
u"λλ  λλ  λλ  λλ  ",
cDecimate2xUint8x8(32 * 3,
tgc(tunbing(u"λλλλ    λλλλ    λλλλ    λλλλ    "
u"λλλλ    λλλλ    λλλλ    λλλλ    "
u"λλλλ    λλλλ    λλλλ    λλλλ    ")),
gc(xunbing(u"λλλλ    λλλλ    λλλλ    λλλλ    "
u"λλλλ    λλλλ    λλλλ    λλλλ    "
u"λλλλ    λλλλ    λλλλ    λλλλ    ")),
K));
}
@ -53,9 +54,9 @@ TEST(magikarp, testConvolveMin1) {
u"λλ  λλ  λλ  λλ  "
u"λλ  λλ  λλ  λλ  ",
cDecimate2xUint8x8(32 * 3 - 1,
tgc(tunbing(u"λλλλ    λλλλ    λλλλ    λλλλ    "
u"λλλλ    λλλλ    λλλλ    λλλλ    "
u"λλλλ    λλλλ    λλλλ    λλλλ   ")),
gc(xunbing(u"λλλλ    λλλλ    λλλλ    λλλλ    "
u"λλλλ    λλλλ    λλλλ    λλλλ    "
u"λλλλ    λλλλ    λλλλ    λλλλ   ")),
K));
}
@ -71,14 +72,14 @@ TEST(magikarp, testConvolve2) {
u"┴├┼╟╔╦═╧╤╙╒╫┘█▌▀"
u"ßπστΘδφ∩±≤⌡≈∙√²λ",
cDecimate2xUint8x8(256,
tgc(tunbing(u" ☺☻♥♦♣♠•◘○◙♂♀♪♫☼►◄↕‼¶§▬↨↑↓→←∟↔▲▼"
u" !“#$%&‘()*+,-./0123456789:;<=>⁇"
u"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
u"`abcdefghijklmnopqrstuvwxyz{|}~⌂"
u"ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜ¢£¥€ƒ"
u"áíóúñѪº¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐"
u"└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀"
u"αßΓπΣσμτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■λ")),
gc(xunbing(u" ☺☻♥♦♣♠•◘○◙♂♀♪♫☼►◄↕‼¶§▬↨↑↓→←∟↔▲▼"
u" !“#$%&‘()*+,-./0123456789:;<=>⁇"
u"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
u"`abcdefghijklmnopqrstuvwxyz{|}~⌂"
u"ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜ¢£¥€ƒ"
u"áíóúñѪº¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐"
u"└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀"
u"αßΓπΣσμτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙×√ⁿ²■λ")),
K));
}
@ -147,8 +148,8 @@ noopopppqqqqqqqqqqqqqqqppoooonn",
BENCH(magikarp, bench) { /* 30ms */
unsigned char kMagkern[16] = {4, 12, 12, 4};
signed char kMagikarp[16] = {-1, -3, 3, 17, 17, 3, -3, -1};
unsigned char(*Me)[HDY][HDX] = tgc(tmalloc((HDX + 1) * (HDY + 1)));
unsigned char(*Mo)[HDY][HDX] = tgc(tmalloc((HDX + 1) * (HDY + 1)));
unsigned char(*Me)[HDY][HDX] = gc(malloc((HDX + 1) * (HDY + 1)));
unsigned char(*Mo)[HDY][HDX] = gc(malloc((HDX + 1) * (HDY + 1)));
if (X86_HAVE(AVX)) {
EZBENCH2("Decimate2xUint8x8", donothing,
cDecimate2xUint8x8((HDX * HDY - 16 - 8) / 2 / 8 * 8, (void *)Me,

14
test/dsp/tty/windex_test.c
View File

@ -21,7 +21,9 @@
#include "libc/bits/bits.h"
#include "libc/limits.h"
#include "libc/macros.h"
#include "libc/mem/mem.h"
#include "libc/nexgen32e/x86feature.h"
#include "libc/runtime/gc.h"
#include "libc/str/str.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
@ -54,12 +56,12 @@ const short kW3[64] forcealign(32) = {
1730, 2041, 7707, 5096, 6876, 1324, 1242, 7, 0x7fff,
};
#define TestIt(impl, index, value, n, array) \
({ \
short *a = memcpy(tgc(tmemalign(32, n * 2)), array, n * 2); \
unsigned res = impl(array, n); \
ASSERT_EQ(index, res); \
ASSERT_EQ(value, a[res]); \
#define TestIt(impl, index, value, n, array) \
({ \
short *a = memcpy(gc(memalign(32, n * 2)), array, n * 2); \
unsigned res = impl(array, n); \
ASSERT_EQ(index, res); \
ASSERT_EQ(value, a[res]); \
})
TEST(windex, testRealWorldPicks) {