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expand support for noreturn declarations

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Although gcc specifies support for declaring a function as
noreturn after the function name and parameters, other compilers
do so via an attribute at the start of the declaration. Add some
macro support for the attribute-at-the-beginning method:
  o MS Visual Studio compiler
  o Upcoming C23 standard (untested at this point)
This commit is contained in:
nhmall
2022-11-24 00:51:42 -05:00
parent ddf1dfde29
commit 4b04b1e6ac
13 changed files with 173 additions and 19 deletions
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16
include/extern.h
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@@ -784,12 +784,12 @@ extern void done_in_by(struct monst *, int);
extern void done_object_cleanup(void);
#endif /* !MAKEDEFS_C && MDLIB_C && !CPPREGEX_C */
#if !defined(CPPREGEX_C)
extern void panic(const char *, ...) PRINTF_F(1, 2) NORETURN;
ATTRNORETURN extern void panic(const char *, ...) PRINTF_F(1, 2) NORETURN;
#endif
#if !defined(MAKEDEFS_C) && !defined(MDLIB_C) && !defined(CPPREGEX_C)
extern void done(int);
extern void container_contents(struct obj *, boolean, boolean, boolean);
extern void nh_terminate(int) NORETURN;
ATTRNORETURN extern void nh_terminate(int) NORETURN;
extern void delayed_killer(int, int, const char *);
extern struct kinfo *find_delayed_killer(int);
extern void dealloc_killer(struct kinfo *);
@@ -1830,7 +1830,7 @@ extern void nhl_done(lua_State *);
extern boolean nhl_loadlua(lua_State *, const char *);
extern int nhl_pcall(lua_State *, int, int);
extern boolean load_lua(const char *, nhl_sandbox_info *);
extern void nhl_error(lua_State *, const char *) NORETURN;
ATTRNORETURN extern void nhl_error(lua_State *, const char *) NORETURN;
extern void lcheck_param_table(lua_State *);
extern schar get_table_mapchr(lua_State *, const char *);
extern schar get_table_mapchr_opt(lua_State *, const char *, schar);
@@ -2072,7 +2072,7 @@ extern void msmsg(const char *, ...) PRINTF_F(1, 2);
extern void gettty(void);
extern void settty(const char *);
extern void setftty(void);
extern void error(const char *, ...) PRINTF_F(1, 2) NORETURN;
ATTRNORETURN extern void error(const char *, ...) PRINTF_F(1, 2) NORETURN;
#if defined(TIMED_DELAY) && defined(_MSC_VER)
extern void msleep(unsigned);
#endif
@@ -3000,7 +3000,7 @@ extern void settty(const char *);
extern void setftty(void);
extern void intron(void);
extern void introff(void);
extern void error (const char *, ...) PRINTF_F(1, 2) NORETURN;
ATTRNORETURN extern void error(const char *, ...) PRINTF_F(1, 2) NORETURN;
#ifdef ENHANCED_SYMBOLS
extern void tty_utf8graphics_fixup(void);
#endif
@@ -3152,8 +3152,8 @@ extern boolean authorize_wizard_mode(void);
/* ### vmsmisc.c ### */
extern void vms_abort(void) NORETURN;
extern void vms_exit(int) NORETURN;
ATTRNORETURN extern void vms_abort(void) NORETURN;
ATTRNORETURN extern void vms_exit(int) NORETURN;
#ifdef PANICTRACE
extern void vms_traceback(int);
#endif
@@ -3167,7 +3167,7 @@ extern void shuttty(const char *);
extern void setftty(void);
extern void intron(void);
extern void introff(void);
extern void error (const char *, ...) PRINTF_F(1, 2) NORETURN;
ATTRNORETURN extern void error (const char *, ...) PRINTF_F(1, 2) NORETURN;
#ifdef TIMED_DELAY
extern void msleep(unsigned);
#endif