Hojun-Cho
ce3a25a0b4
The wcc test drivers ran `ww build <bare-/tmp src>` with no -o, so the compiler's <stem>.sepwork scratch landed beside the source and was never cleaned: unbounded /tmp growth (2195 stale dirs observed) that fills tmpfs and fabricates phantom test failures + silent harness aborts, and for in-repo fixture builds leaked .sepwork into the tracked tree. Each leaking build now writes its source + output inside a per-invocation tmpdir, passes -o <tmpdir>/<stem> so the .sepwork lands inside it, and rm -rf's the tmpdir on every exit path -- including fopen-fail and the expected-fail reject builds (scratch is mkdir'd before the build can fail). `ww run` and explicit-`-o`/byte-id helpers are left as-is; the 990/993 byte-id comparison logic is byte-for-byte unchanged. Two items filed separately (this commit holds the no-Makefile / no-main.c rail): - #13: a stale <src>.s byte-id readback (749) silently no-ops since separate-compile emits .s to <ostem>.sepwork/__root.s; documented inline. - #14: build-system Makefile recipes build selfhost/cmd/*/main.ww with no -o and leak main.sepwork in-tree (bounded, gitignored; own commit). One concern -- sepwork leak hygiene -- across 228 drivers; uniform transform applied per-file and two-round reviewed. make test: all 402 passed, zero net-new /tmp scratch, zero test-driven in-repo .sepwork.
201 lines
6.9 KiB
C
201 lines
6.9 KiB
C
/*
|
|
* 989_floatlit_run — runtime + byte-id net for #62: the two stages
|
|
* folded float LITERALS differently. cstage folds via strtod
|
|
* (correctly rounded); the wwstage lexer used a pow-10 accumulation
|
|
* fold that was 1-2 ULP off on decimal fractions, overflowed its i64
|
|
* accumulator past 19 mantissa digits, and missed DBL_MIN/DBL_MAX by
|
|
* up to 2 ULP — a pinned cs≠ww DATA divergence (989 ratchet #59.10).
|
|
* Fix: lexnum folds through strconv.stof64 (the Hare-ported
|
|
* correctly-rounded decimal engine).
|
|
*
|
|
* Fixture 1 (vectors): each row reads back a literal's IEEE bits via
|
|
* a *u64 reinterpret and compares against the C-strtod-oracle bit
|
|
* pattern; the exit code pinpoints the failing row. Carries (a)
|
|
* cstage `ww build` + run asserting exit 0 (rule-10: convergence
|
|
* targets the runtime-CORRECT side) and (b) w6c vs w6c_ww `.s` cmp
|
|
* (byte-id — the wwstage fold itself).
|
|
*
|
|
* Fixture 2 (overflow): 1.7976931348623159e308 rounds above DBL_MAX —
|
|
* strtod sets ERANGE so cstage rejects; wwstage must reject too
|
|
* (stof64 overflow → errat). Both compilers must exit non-zero.
|
|
*
|
|
* Retained divergence (task #21): a SUBNORMAL literal (e.g.
|
|
* 2.2250738585072011e-308) is rejected by cstage (glibc strtod flags
|
|
* partial underflow with ERANGE) but accepted correctly-rounded by
|
|
* wwstage (Hare stof semantics) — accept-set asymmetry only, not a
|
|
* bits divergence; pre-existing on master (old parsef64 accepted it
|
|
* with garbage bits).
|
|
*
|
|
* 9xx is full; shares the 989 prefix per the 989_sha256 precedent.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/wait.h>
|
|
|
|
static const char *vectors_src =
|
|
"package main;\n"
|
|
"fn bits(v: f64) u64 = {\n"
|
|
" let x: f64 = v;\n"
|
|
" let p: *u64 = (&x): *u64;\n"
|
|
" return *p;\n"
|
|
"};\n"
|
|
"export fn main() i32 = {\n"
|
|
" if (bits(1.0000000000000002) != 0x3FF0000000000001u64) { return 1; };\n"
|
|
" if (bits(9007199254740993.0) != 0x4340000000000000u64) { return 2; };\n"
|
|
" if (bits(1.2345e67) != 0x4DDD4E421712C0B7u64) { return 3; };\n"
|
|
" if (bits(0.1) != 0x3FB999999999999Au64) { return 4; };\n"
|
|
" if (bits(1.1) != 0x3FF199999999999Au64) { return 5; };\n"
|
|
" if (bits(123456789012345678901234567890.0) != 0x45F8EE90FF6C373Eu64) { return 6; };\n"
|
|
" if (bits(2.2250738585072014e-308) != 0x0010000000000000u64) { return 7; };\n"
|
|
" if (bits(0.3) != 0x3FD3333333333333u64) { return 8; };\n"
|
|
" if (bits(3.141592653589793) != 0x400921FB54442D18u64) { return 9; };\n"
|
|
" if (bits(1.7976931348623157e308) != 0x7FEFFFFFFFFFFFFFu64) { return 10; };\n"
|
|
" if (bits(1.7976931348623158e308) != 0x7FEFFFFFFFFFFFFFu64) { return 11; };\n"
|
|
" if (bits(7.2057594037927933e16) != 0x4370000000000000u64) { return 12; };\n"
|
|
" if (bits(1000000000000000000000.0) != 0x444B1AE4D6E2EF50u64) { return 13; };\n"
|
|
" if (bits(1_000.5) != 0x408F440000000000u64) { return 14; };\n"
|
|
" if (bits(1.00000000000000011102230246251565404236316680908203125) != 0x3FF0000000000000u64) { return 15; };\n"
|
|
" if (bits(1.00000000000000011102230246251565404236316680908203126) != 0x3FF0000000000001u64) { return 16; };\n"
|
|
" if (bits(4503599627370497.5) != 0x4330000000000002u64) { return 17; };\n"
|
|
" if (bits(0.5) != 0x3FE0000000000000u64) { return 18; };\n"
|
|
" if (bits(1.0e308) != 0x7FE1CCF385EBC8A0u64) { return 19; };\n"
|
|
" if (bits(2.225073858507202e-308) != 0x0010000000000001u64) { return 20; };\n"
|
|
" return 0;\n"
|
|
"};\n";
|
|
|
|
static const char *overflow_src =
|
|
"package main;\n"
|
|
"export fn main() i32 = {\n"
|
|
" let a: f64 = 1.7976931348623159e308;\n"
|
|
" return 0;\n"
|
|
"};\n";
|
|
|
|
static int
|
|
runwait(const char *cmd)
|
|
{
|
|
int rc = system(cmd);
|
|
if (rc == -1) return -1;
|
|
if (WIFEXITED(rc)) return WEXITSTATUS(rc);
|
|
return -1;
|
|
}
|
|
|
|
static int
|
|
slurp_eq(const char *a, const char *b)
|
|
{
|
|
FILE *fa = fopen(a, "rb");
|
|
FILE *fb = fopen(b, "rb");
|
|
if (!fa || !fb) { if (fa) fclose(fa); if (fb) fclose(fb); return -1; }
|
|
int rc = 0;
|
|
for (;;) {
|
|
int ca = fgetc(fa);
|
|
int cb = fgetc(fb);
|
|
if (ca != cb) { rc = -1; break; }
|
|
if (ca == EOF) break;
|
|
}
|
|
fclose(fa); fclose(fb);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
writesrc(const char *path, const char *src)
|
|
{
|
|
FILE *f = fopen(path, "wb");
|
|
if (f == NULL) return -1;
|
|
fputs(src, f);
|
|
fclose(f);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
const char *bin = getenv("BIN");
|
|
if (!bin) bin = "out/bin";
|
|
char absbin[1024];
|
|
if (bin[0] != '/') {
|
|
char cwd[1024];
|
|
if (getcwd(cwd, sizeof cwd) == NULL) return 1;
|
|
snprintf(absbin, sizeof absbin, "%s/%s", cwd, bin);
|
|
bin = absbin;
|
|
}
|
|
|
|
char w6c[1100], w6c_ww[1100];
|
|
snprintf(w6c, sizeof w6c, "%s/w6c", bin);
|
|
snprintf(w6c_ww, sizeof w6c_ww, "%s/w6c_ww", bin);
|
|
if (access(w6c_ww, X_OK) != 0) {
|
|
fprintf(stderr, "floatlit: w6c_ww missing — cannot run "
|
|
"the cs==ww byte-id gate (the whole point of this test)\n");
|
|
return 1;
|
|
}
|
|
|
|
int fail = 0;
|
|
char src[128], outbin[128], cs_s[128], ws_s[128], cmd[2048];
|
|
|
|
char tmpdir[64], rmcmd[160];
|
|
snprintf(tmpdir, sizeof tmpdir, "/tmp/wwflit_%d_d", getpid());
|
|
mkdir(tmpdir, 0755);
|
|
snprintf(rmcmd, sizeof rmcmd, "rm -rf %s", tmpdir);
|
|
|
|
/* fixture 1: vectors — cstage build+run, then byte-id */
|
|
snprintf(src, sizeof src, "%s/wwflit_%d.ww", tmpdir, getpid());
|
|
if (writesrc(src, vectors_src) != 0) { runwait(rmcmd); return 1; }
|
|
|
|
snprintf(outbin, sizeof outbin, "%s/wwflit_%d", tmpdir, getpid());
|
|
snprintf(cmd, sizeof cmd, "%s/ww build -o %s %s", bin, outbin, src);
|
|
if (runwait(cmd) != 0) {
|
|
fprintf(stderr, "floatlit: cstage build failed\n");
|
|
fail++;
|
|
} else {
|
|
int got = runwait(outbin);
|
|
if (got != 0) {
|
|
fprintf(stderr, "floatlit: vector row %d has wrong "
|
|
"bits at runtime (cstage)\n", got);
|
|
fail++;
|
|
}
|
|
}
|
|
|
|
snprintf(cs_s, sizeof cs_s, "%s/wwflit_%d_cs.s", tmpdir, getpid());
|
|
snprintf(ws_s, sizeof ws_s, "%s/wwflit_%d_ww.s", tmpdir, getpid());
|
|
snprintf(cmd, sizeof cmd, "%s -o %s %s 2>/dev/null", w6c, cs_s, src);
|
|
if (runwait(cmd) != 0) {
|
|
fprintf(stderr, "floatlit: w6c failed on vectors\n");
|
|
fail++;
|
|
} else {
|
|
snprintf(cmd, sizeof cmd, "%s -o %s %s 2>/dev/null",
|
|
w6c_ww, ws_s, src);
|
|
if (runwait(cmd) != 0) {
|
|
fprintf(stderr, "floatlit: w6c_ww failed on vectors\n");
|
|
fail++;
|
|
} else if (slurp_eq(cs_s, ws_s) != 0) {
|
|
fprintf(stderr, "floatlit: cstage/wwstage .s DIFFER "
|
|
"(rule-10 byte-id violation)\n");
|
|
fail++;
|
|
}
|
|
}
|
|
|
|
/* fixture 2: overflow literal — BOTH stages must reject */
|
|
snprintf(src, sizeof src, "%s/wwflit_%d_ovf.ww", tmpdir, getpid());
|
|
if (writesrc(src, overflow_src) != 0) { runwait(rmcmd); return 1; }
|
|
snprintf(cmd, sizeof cmd, "%s %s >/dev/null 2>&1", w6c, src);
|
|
if (runwait(cmd) == 0) {
|
|
fprintf(stderr, "floatlit: w6c ACCEPTED overflow literal\n");
|
|
fail++;
|
|
}
|
|
snprintf(cmd, sizeof cmd, "%s %s >/dev/null 2>&1", w6c_ww, src);
|
|
if (runwait(cmd) == 0) {
|
|
fprintf(stderr, "floatlit: w6c_ww ACCEPTED overflow literal\n");
|
|
fail++;
|
|
}
|
|
runwait(rmcmd);
|
|
|
|
if (fail) {
|
|
fprintf(stderr, "floatlit: %d check(s) failed\n", fail);
|
|
return 1;
|
|
}
|
|
printf("floatlit: vectors byte-id + runtime-correct, "
|
|
"overflow rejected by both stages\n");
|
|
return 0;
|
|
}
|