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Add dontthrow attribute to most libc functions

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This will help C++ code that uses exceptions to be tinier. For example,
this change shaves away 1000 lines of assembly code from LLVM's libcxx,
which is 0.7% of all assembly instructions in the entire library.
This commit is contained in:
Justine Tunney 2024-01-09 01:26:03 -08:00
parent cb19e172da
commit eeb20775d2
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GPG key ID: BE714B4575D6E328
103 changed files with 1455 additions and 1456 deletions
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55
libc/fmt/conv.h
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@ -5,39 +5,38 @@ COSMOPOLITAN_C_START_
int abs(int) libcesque pureconst;
long labs(long) libcesque pureconst;
long long llabs(long long) libcesque pureconst;
intmax_t imaxabs(intmax_t)
libcesque pureconst;
libcesque intmax_t imaxabs(intmax_t) pureconst;
int atoi(const char *) paramsnonnull() libcesque;
long atol(const char *) paramsnonnull() libcesque;
long long atoll(const char *) paramsnonnull() libcesque;
unsigned long strtoul(const char *, char **, int) paramsnonnull((1));
long long strtoll(const char *, char **, int) paramsnonnull((1));
unsigned long strtoul(const char *, char **, int) libcesque paramsnonnull((1));
long long strtoll(const char *, char **, int) libcesque paramsnonnull((1));
unsigned long long strtoull(const char *, char **, int) paramsnonnull((1));
intmax_t strtoimax(const char *, char **, int) paramsnonnull((1));
uintmax_t strtoumax(const char *, char **, int) paramsnonnull((1));
intmax_t wcstoimax(const wchar_t *, wchar_t **, int);
uintmax_t wcstoumax(const wchar_t *, wchar_t **, int);
long wcstol(const wchar_t *, wchar_t **, int);
unsigned long wcstoul(const wchar_t *, wchar_t **, int);
intmax_t strtoimax(const char *, char **, int) libcesque paramsnonnull((1));
uintmax_t strtoumax(const char *, char **, int) libcesque paramsnonnull((1));
intmax_t wcstoimax(const wchar_t *, wchar_t **, int) libcesque;
uintmax_t wcstoumax(const wchar_t *, wchar_t **, int) libcesque;
long wcstol(const wchar_t *, wchar_t **, int) libcesque;
unsigned long wcstoul(const wchar_t *, wchar_t **, int) libcesque;
long strtol(const char *, char **, int) paramsnonnull((1)) libcesque;
long sizetol(const char *, long) paramsnonnull() libcesque;
char *sizefmt(char *, uint64_t, uint64_t);
long long wcstoll(const wchar_t *, wchar_t **, int);
unsigned long long wcstoull(const wchar_t *, wchar_t **, int);
int wcscoll(const wchar_t *, const wchar_t *);
size_t wcsxfrm(wchar_t *, const wchar_t *, size_t);
char *sizefmt(char *, uint64_t, uint64_t) libcesque;
long long wcstoll(const wchar_t *, wchar_t **, int) libcesque;
unsigned long long wcstoull(const wchar_t *, wchar_t **, int) libcesque;
int wcscoll(const wchar_t *, const wchar_t *) libcesque;
size_t wcsxfrm(wchar_t *, const wchar_t *, size_t) libcesque;
double atof(const char *);
float strtof(const char *, char **);
double strtod(const char *, char **);
long double strtold(const char *, char **);
float wcstof(const wchar_t *, wchar_t **);
double wcstod(const wchar_t *, wchar_t **);
long double wcstold(const wchar_t *, wchar_t **);
double atof(const char *) libcesque;
float strtof(const char *, char **) libcesque;
double strtod(const char *, char **) libcesque;
long double strtold(const char *, char **) libcesque;
float wcstof(const wchar_t *, wchar_t **) libcesque;
double wcstod(const wchar_t *, wchar_t **) libcesque;
long double wcstold(const wchar_t *, wchar_t **) libcesque;
#ifdef _COSMO_SOURCE
char *stripext(char *);
char *stripexts(char *);
char *stripext(char *) libcesque;
char *stripexts(char *) libcesque;
#endif /* _COSMO_SOURCE */
typedef struct {
@ -60,10 +59,10 @@ typedef struct {
intmax_t rem;
} imaxdiv_t;
div_t div(int, int) pureconst;
ldiv_t ldiv(long, long) pureconst;
lldiv_t lldiv(long long, long long) pureconst;
imaxdiv_t imaxdiv(intmax_t, intmax_t) pureconst;
libcesque div_t div(int, int) pureconst;
libcesque ldiv_t ldiv(long, long) pureconst;
libcesque lldiv_t lldiv(long long, long long) pureconst;
libcesque imaxdiv_t imaxdiv(intmax_t, intmax_t) pureconst;
#if __STDC_VERSION__ + 0 >= 199901L
#define div(num, den) ((div_t){(num) / (den), (num) % (den)})