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Fix strtod NaN handling / fix SIGSEGV in testlib/showerror (#901)

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This commit is contained in:
Gavin Hayes 2023-09-27 03:16:36 -04:00 committed by GitHub
parent 3ffc17c50e
commit cc8c56e814
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 19 additions and 4 deletions
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4
libc/testlib/showerror.c
View file

@ -98,9 +98,9 @@ static void testlib_showerror_(int line, //
}
if (!isempty(fmt)) {
if (_weaken(kvprintf)) {
tinyprint(2, "\t");
tinyprint(2, "\t", NULL);
_weaken(kvprintf)(fmt, va);
tinyprint(2, "\n");
tinyprint(2, "\n", NULL);
} else {
tinyprint(2, "\t[missing kvprintf]\n");
}

15
test/libc/tinymath/strtod_test.c
View file

@ -38,6 +38,17 @@ static const struct {
uint64_t i;
const char *s;
} V[] = {
{0x7FF8000000000000, "nan"}, //
{0x7FF8000000000000, "NaN"}, //
{0x7FF8000000000000, "NAn"}, //
{0x7FF8000000000000, "nAN"}, //
{0x7FF8000000000000, "NAN"}, //
{0x7FF0000000000000, "INF"}, //
{0x7FF0000000000000, "iNf"}, //
{0x7FF8000000000000, "+NAN"}, //
{0xFFF8000000000000, "-NAN"}, //
{0x7FF0000000000000, "+INF"}, //
{0xFFF0000000000000, "-INF"}, //
{0x2fa7b6d71d20b96c, "4e-079"}, //
{0x09eb8d7e32be6396, "7e-261"}, //
{0x3ae7361cb863de62, "6e-025"}, //
@ -85,6 +96,10 @@ static const struct {
{0x7044d64d4079150c, "647e0230"}, //
{0x64a7d93193f78fc6, "755e0174"}, //
{0x30dcd5bee57763e6, "255e-075"}, //
{0x7FF0000000000000, "INFINITY"}, //
{0x7FF0000000000000, "iNfiNiTy"}, //
{0x7FF0000000000000, "+INFINITY"}, //
{0xFFF0000000000000, "-INFINITY"}, //
{0x4c159bd3ad46e346, "3391e0055"}, //
{0x3d923d1b5eb1d778, "4147e-015"}, //
{0x3b482782afe1869e, "3996e-026"}, //

4
third_party/gdtoa/strtod.c vendored
View file

@ -237,8 +237,8 @@ dig_done:
word1(&rv) = bits[0];
}
else {
word0(&rv) = NAN_WORD0;
word1(&rv) = NAN_WORD1;
word0(&rv) = 0x7ff80000;
word1(&rv) = 0x0;
}
goto ret;
}