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Add compatibility string coercion for fp:seek() argument.

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Reported by Magnus Wibeck. #1343
This commit is contained in:
Mike Pall 2025-03-09 16:21:29 +01:00
parent 62e362afbb
commit d508715ab6
2 changed files with 4 additions and 2 deletions
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2
src/Makefile.dep
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@ -18,7 +18,7 @@ lib_ffi.o: lib_ffi.c lua.h luaconf.h lauxlib.h lualib.h lj_obj.h lj_def.h \
lib_init.o: lib_init.c lua.h luaconf.h lauxlib.h lualib.h lj_arch.h
lib_io.o: lib_io.c lua.h luaconf.h lauxlib.h lualib.h lj_obj.h lj_def.h \
lj_arch.h lj_gc.h lj_err.h lj_errmsg.h lj_str.h lj_state.h lj_ff.h \
lj_ffdef.h lj_lib.h lj_libdef.h
lj_ffdef.h lj_lib.h lj_strscan.h lj_libdef.h
lib_jit.o: lib_jit.c lua.h luaconf.h lauxlib.h lualib.h lj_arch.h \
lj_obj.h lj_def.h lj_err.h lj_errmsg.h lj_debug.h lj_str.h lj_tab.h \
lj_bc.h lj_ir.h lj_jit.h lj_ircall.h lj_iropt.h lj_target.h \

4
src/lib_io.c
View File

@ -23,6 +23,7 @@
#include "lj_state.h"
#include "lj_ff.h"
#include "lj_lib.h"
#include "lj_strscan.h"
/* Userdata payload for I/O file. */
typedef struct IOFileUD {
@ -324,13 +325,14 @@ LJLIB_CF(io_method_seek)
FILE *fp = io_tofile(L)->fp;
int opt = lj_lib_checkopt(L, 2, 1, "\3set\3cur\3end");
int64_t ofs = 0;
cTValue *o;
TValue *o;
int res;
if (opt == 0) opt = SEEK_SET;
else if (opt == 1) opt = SEEK_CUR;
else if (opt == 2) opt = SEEK_END;
o = L->base+2;
if (o < L->top) {
if (tvisstr(o)) lj_strscan_num(strV(o), o);
if (tvisint(o))
ofs = (int64_t)intV(o);
else if (tvisnum(o))