builtin-attrs.def (__builtin_printf_unlocked, [...]): Mark with the __printf__ attribute.
* builtin-attrs.def (__builtin_printf_unlocked, __builtin_fprintf_unlocked, printf_unlocked, fprintf_unlocked): Mark with the __printf__ attribute. * builtins.c (expand_builtin_fputs): Add an `unlocked' parameter and set the replacement function depending on it. (expand_builtin): Skip BUILT_IN_*_UNLOCKED when not optimizing. Handle BUILT_IN_*_UNLOCKED when optimizing. * builtins.def (DEF_EXT_FALLBACK_BUILTIN, DEF_EXT_FRONT_END_LIB_BUILTIN): New macros. Declare the "unlocked" stdio functions. * c-common.c (c_expand_builtin_printf, c_expand_builtin_fprintf): Add an `unlocked' parameter and set the replacement function depending on it. (c_expand_builtin): Handle BUILT_IN_PRINTF_UNLOCKED and BUILT_IN_FPRINTF_UNLOCKED. * doc/extend.texi (printf_unlocked, fprintf_unlocked, fputs_unlocked): Document. testsuite: * gcc.dg/format/builtin-1.c: Test unlocked stdio. * gcc.dg/format/c90-printf-3.c: Likewise. * gcc.dg/format/c99-printf-3.c: Likewise. * gcc.dg/format/ext-1.c: Likewise. * gcc.dg/format/ext-6.c: Likewise. * gcc.dg/format/format.h: Prototype unlocked stdio. From-SVN: r48229
This commit is contained in:
Kaveh R. Ghazi
Kaveh Ghazi
parent
bfa8af3e37
commit
b4c984fbec
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@ -1,3 +1,27 @@
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2001-12-20 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
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* builtin-attrs.def (__builtin_printf_unlocked,
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__builtin_fprintf_unlocked, printf_unlocked, fprintf_unlocked):
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Mark with the __printf__ attribute.
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* builtins.c (expand_builtin_fputs): Add an `unlocked' parameter
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and set the replacement function depending on it.
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(expand_builtin): Skip BUILT_IN_*_UNLOCKED when not optimizing.
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Handle BUILT_IN_*_UNLOCKED when optimizing.
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* builtins.def (DEF_EXT_FALLBACK_BUILTIN,
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DEF_EXT_FRONT_END_LIB_BUILTIN): New macros.
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Declare the "unlocked" stdio functions.
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* c-common.c (c_expand_builtin_printf, c_expand_builtin_fprintf):
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Add an `unlocked' parameter and set the replacement function
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depending on it.
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(c_expand_builtin): Handle BUILT_IN_PRINTF_UNLOCKED and
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BUILT_IN_FPRINTF_UNLOCKED.
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* doc/extend.texi (printf_unlocked, fprintf_unlocked,
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fputs_unlocked): Document.
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2001-12-20 Josef Zlomek <zlomek@matfyz.cz>
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* cfgloop.c (flow_loops_find): Use the information of the depth
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@ -125,6 +125,8 @@ DEF_ATTR_TREE_LIST (ATTR_FORMAT_ARG_2, ATTR_FORMAT_ARG, ATTR_LIST_2, ATTR_NULL)
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-ffreestanding. */
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DEF_FN_ATTR_IDENT (__builtin_printf, ATTR_FORMAT_PRINTF_1_2, true)
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DEF_FN_ATTR_IDENT (__builtin_fprintf, ATTR_FORMAT_PRINTF_2_3, true)
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DEF_FN_ATTR_IDENT (__builtin_printf_unlocked, ATTR_FORMAT_PRINTF_1_2, true)
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DEF_FN_ATTR_IDENT (__builtin_fprintf_unlocked, ATTR_FORMAT_PRINTF_2_3, true)
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/* Functions from ISO/IEC 9899:1990. */
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#define DEF_C89_ATTR(NAME, ATTRS) DEF_FN_ATTR_IDENT (NAME, ATTRS, flag_hosted)
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@ -162,5 +164,8 @@ DEF_EXT_ATTR (dgettext, ATTR_FORMAT_ARG_2)
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DEF_EXT_ATTR (dcgettext, ATTR_FORMAT_ARG_2)
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/* X/Open strfmon function. */
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DEF_EXT_ATTR (strfmon, ATTR_FORMAT_STRFMON_3_4)
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/* Glibc thread-unsafe stdio functions. */
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DEF_EXT_ATTR (printf_unlocked, ATTR_FORMAT_PRINTF_1_2)
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DEF_EXT_ATTR (fprintf_unlocked, ATTR_FORMAT_PRINTF_2_3)
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#undef DEF_EXT_ATTR
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#undef DEF_FN_ATTR_IDENT
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@ -142,7 +142,7 @@ static rtx expand_builtin_strrchr PARAMS ((tree, rtx,
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static rtx expand_builtin_alloca PARAMS ((tree, rtx));
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static rtx expand_builtin_ffs PARAMS ((tree, rtx, rtx));
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static rtx expand_builtin_frame_address PARAMS ((tree));
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static rtx expand_builtin_fputs PARAMS ((tree, int));
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static rtx expand_builtin_fputs PARAMS ((tree, int, int));
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static tree stabilize_va_list PARAMS ((tree, int));
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static rtx expand_builtin_expect PARAMS ((tree, rtx));
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static tree fold_builtin_constant_p PARAMS ((tree));
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@ -3287,12 +3287,16 @@ expand_builtin_ffs (arglist, target, subtarget)
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long, we attempt to transform this call into __builtin_fputc(). */
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static rtx
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expand_builtin_fputs (arglist, ignore)
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expand_builtin_fputs (arglist, ignore, unlocked)
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tree arglist;
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int ignore;
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int unlocked;
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{
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tree len, fn, fn_fputc = built_in_decls[BUILT_IN_FPUTC],
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fn_fwrite = built_in_decls[BUILT_IN_FWRITE];
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tree len, fn;
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tree fn_fputc = unlocked ? built_in_decls[BUILT_IN_FPUTC_UNLOCKED]
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: built_in_decls[BUILT_IN_FPUTC];
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tree fn_fwrite = unlocked ? built_in_decls[BUILT_IN_FWRITE_UNLOCKED]
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: built_in_decls[BUILT_IN_FWRITE];
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/* If the return value is used, or the replacement _DECL isn't
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initialized, don't do the transformation. */
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@ -3581,6 +3585,12 @@ expand_builtin (exp, target, subtarget, mode, ignore)
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case BUILT_IN_FPUTC:
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case BUILT_IN_FPUTS:
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case BUILT_IN_FWRITE:
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case BUILT_IN_PUTCHAR_UNLOCKED:
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case BUILT_IN_PUTS_UNLOCKED:
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case BUILT_IN_PRINTF_UNLOCKED:
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case BUILT_IN_FPUTC_UNLOCKED:
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case BUILT_IN_FPUTS_UNLOCKED:
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case BUILT_IN_FWRITE_UNLOCKED:
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return expand_call (exp, target, ignore);
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default:
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@ -3863,9 +3873,18 @@ expand_builtin (exp, target, subtarget, mode, ignore)
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case BUILT_IN_PUTS:
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case BUILT_IN_FPUTC:
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case BUILT_IN_FWRITE:
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case BUILT_IN_PUTCHAR_UNLOCKED:
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case BUILT_IN_PUTS_UNLOCKED:
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case BUILT_IN_FPUTC_UNLOCKED:
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case BUILT_IN_FWRITE_UNLOCKED:
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break;
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case BUILT_IN_FPUTS:
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target = expand_builtin_fputs (arglist, ignore);
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target = expand_builtin_fputs (arglist, ignore,/*unlocked=*/ 0);
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if (target)
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return target;
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break;
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case BUILT_IN_FPUTS_UNLOCKED:
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target = expand_builtin_fputs (arglist, ignore,/*unlocked=*/ 1);
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if (target)
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return target;
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break;
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@ -70,6 +70,15 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
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false, true, false)
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/* Like DEF_FALLBACK_BUILTIN, except that the function is not one that
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is specified by ANSI/ISO C. So, when we're being fully conformant
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we ignore the version of these builtins that does not begin with
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__builtin. */
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#undef DEF_EXT_FALLBACK_BUILTIN
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#define DEF_EXT_FALLBACK_BUILTIN(ENUM, NAME, TYPE) \
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DEF_BUILTIN (ENUM, NAME, BUILT_IN_NORMAL, TYPE, TYPE, \
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false, true, true)
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/* A library builtin (like __builtin_strchr) is a builtin equivalent
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of an ANSI/ISO standard library function. In addition to the
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`__builtin' version, we will create an ordinary version (e.g,
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@ -111,6 +120,15 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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DEF_BUILTIN (ENUM, NAME, BUILT_IN_FRONTEND, TYPE, TYPE, \
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true, true, false)
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/* Like DEF_FRONT_END_LIB_BUILTIN, except that the function is not one
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that is specified by ANSI/ISO C. So, when we're being fully
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conformant we ignore the version of these builtins that does not
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begin with __builtin. */
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#undef DEF_EXT_FRONT_END_LIB_BUILTIN
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#define DEF_EXT_FRONT_END_LIB_BUILTIN(ENUM, NAME, TYPE) \
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DEF_BUILTIN (ENUM, NAME, BUILT_IN_FRONTEND, TYPE, TYPE, \
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true, true, true)
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/* A built-in that is not currently used. */
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#undef DEF_UNUSED_BUILTIN
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#define DEF_UNUSED_BUILTIN(X) \
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@ -370,6 +388,37 @@ DEF_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF,
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"__builtin_fprintf",
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BT_FN_INT_PTR_CONST_STRING_VAR)
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/* Stdio unlocked builtins. */
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DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTCHAR_UNLOCKED,
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"__builtin_putchar_unlocked",
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BT_FN_INT_INT)
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DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_PUTS_UNLOCKED,
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"__builtin_puts_unlocked",
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BT_FN_INT_CONST_STRING)
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DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_PRINTF_UNLOCKED,
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"__builtin_printf_unlocked",
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BT_FN_INT_CONST_STRING_VAR)
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DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FPUTC_UNLOCKED,
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"__builtin_fputc_unlocked",
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BT_FN_INT_INT_PTR)
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/* Declare the __builtin_ style with arguments and the regular style
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without them. We rely on stdio.h to supply the arguments for the
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regular style declaration since we had to use void* instead of
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FILE* in the __builtin_ prototype supplied here. */
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DEF_BUILTIN (BUILT_IN_FPUTS_UNLOCKED,
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"__builtin_fputs_unlocked",
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BUILT_IN_NORMAL,
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BT_FN_INT_CONST_STRING_PTR,
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BT_FN_INT_VAR,
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true, true, true)
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DEF_EXT_FALLBACK_BUILTIN(BUILT_IN_FWRITE_UNLOCKED,
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"__builtin_fwrite_unlocked",
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BT_FN_SIZE_CONST_PTR_SIZE_SIZE_PTR)
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DEF_EXT_FRONT_END_LIB_BUILTIN(BUILT_IN_FPRINTF_UNLOCKED,
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"__builtin_fprintf_unlocked",
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BT_FN_INT_PTR_CONST_STRING_VAR)
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/* ISO C99 floating point unordered comparisons. */
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DEF_GCC_BUILTIN(BUILT_IN_ISGREATER,
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"__builtin_isgreater",
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@ -643,9 +643,9 @@ combine_strings (strings)
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static int is_valid_printf_arglist PARAMS ((tree));
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static rtx c_expand_builtin PARAMS ((tree, rtx, enum machine_mode, enum expand_modifier));
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static rtx c_expand_builtin_printf PARAMS ((tree, rtx, enum machine_mode,
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enum expand_modifier, int));
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enum expand_modifier, int, int));
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static rtx c_expand_builtin_fprintf PARAMS ((tree, rtx, enum machine_mode,
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enum expand_modifier, int));
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enum expand_modifier, int, int));
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/* Print a warning if a constant expression had overflow in folding.
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Invoke this function on every expression that the language
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@ -3589,14 +3589,28 @@ c_expand_builtin (exp, target, tmode, modifier)
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{
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case BUILT_IN_PRINTF:
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target = c_expand_builtin_printf (arglist, target, tmode,
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modifier, ignore);
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modifier, ignore,/*unlocked=*/ 0);
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if (target)
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return target;
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break;
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case BUILT_IN_PRINTF_UNLOCKED:
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target = c_expand_builtin_printf (arglist, target, tmode,
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modifier, ignore,/*unlocked=*/ 1);
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if (target)
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return target;
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break;
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case BUILT_IN_FPRINTF:
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target = c_expand_builtin_fprintf (arglist, target, tmode,
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modifier, ignore);
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modifier, ignore,/*unlocked=*/ 0);
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if (target)
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return target;
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break;
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case BUILT_IN_FPRINTF_UNLOCKED:
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target = c_expand_builtin_fprintf (arglist, target, tmode,
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modifier, ignore,/*unlocked=*/ 1);
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if (target)
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return target;
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break;
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@ -3649,15 +3663,18 @@ is_valid_printf_arglist (arglist)
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/* If the arguments passed to printf are suitable for optimizations,
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we attempt to transform the call. */
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static rtx
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c_expand_builtin_printf (arglist, target, tmode, modifier, ignore)
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c_expand_builtin_printf (arglist, target, tmode, modifier, ignore, unlocked)
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tree arglist;
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rtx target;
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enum machine_mode tmode;
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enum expand_modifier modifier;
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int ignore;
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int unlocked;
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{
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tree fn_putchar = built_in_decls[BUILT_IN_PUTCHAR],
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fn_puts = built_in_decls[BUILT_IN_PUTS];
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tree fn_putchar = unlocked ?
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built_in_decls[BUILT_IN_PUTCHAR_UNLOCKED] : built_in_decls[BUILT_IN_PUTCHAR];
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tree fn_puts = unlocked ?
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built_in_decls[BUILT_IN_PUTS_UNLOCKED] : built_in_decls[BUILT_IN_PUTS];
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tree fn, format_arg, stripped_string;
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/* If the return value is used, or the replacement _DECL isn't
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|
@ -3750,15 +3767,18 @@ c_expand_builtin_printf (arglist, target, tmode, modifier, ignore)
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|||
/* If the arguments passed to fprintf are suitable for optimizations,
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||||
we attempt to transform the call. */
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static rtx
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c_expand_builtin_fprintf (arglist, target, tmode, modifier, ignore)
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c_expand_builtin_fprintf (arglist, target, tmode, modifier, ignore, unlocked)
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tree arglist;
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rtx target;
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enum machine_mode tmode;
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enum expand_modifier modifier;
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int ignore;
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int unlocked;
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{
|
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tree fn_fputc = built_in_decls[BUILT_IN_FPUTC],
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fn_fputs = built_in_decls[BUILT_IN_FPUTS];
|
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tree fn_fputc = unlocked ?
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built_in_decls[BUILT_IN_FPUTC_UNLOCKED] : built_in_decls[BUILT_IN_FPUTC];
|
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tree fn_fputs = unlocked ?
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built_in_decls[BUILT_IN_FPUTS_UNLOCKED] : built_in_decls[BUILT_IN_FPUTS];
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tree fn, format_arg, stripped_string;
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/* If the return value is used, or the replacement _DECL isn't
|
||||
|
|
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|
|
@ -2047,7 +2047,8 @@ warnings are requested (using @option{-Wformat}), so there is no need to
|
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modify the header file @file{stdio.h}. In C99 mode, the functions
|
||||
@code{snprintf}, @code{vsnprintf}, @code{vscanf}, @code{vfscanf} and
|
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@code{vsscanf} are also checked. Except in strictly conforming C
|
||||
standard modes, the X/Open function @code{strfmon} is also checked.
|
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standard modes, the X/Open function @code{strfmon} is also checked as
|
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are @code{printf_unlocked} and @code{fprintf_unlocked}.
|
||||
@xref{C Dialect Options,,Options Controlling C Dialect}.
|
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|
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@item format_arg (@var{string-index})
|
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|
|
@ -4259,7 +4260,9 @@ v4si f (v4si a, v4si b, v4si c)
|
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@findex fabsl
|
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@findex ffs
|
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@findex fprintf
|
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@findex fprintf_unlocked
|
||||
@findex fputs
|
||||
@findex fputs_unlocked
|
||||
@findex imaxabs
|
||||
@findex index
|
||||
@findex labs
|
||||
|
|
@ -4268,6 +4271,7 @@ v4si f (v4si a, v4si b, v4si c)
|
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@findex memcpy
|
||||
@findex memset
|
||||
@findex printf
|
||||
@findex printf_unlocked
|
||||
@findex rindex
|
||||
@findex sin
|
||||
@findex sinf
|
||||
|
|
@ -4315,8 +4319,9 @@ in. @code{_exit} is not recognized in strict ISO C mode (@option{-ansi},
|
|||
strict C89 mode (@option{-ansi} or @option{-std=c89}).
|
||||
|
||||
Outside strict ISO C mode, the functions @code{alloca}, @code{bcmp},
|
||||
@code{bzero}, @code{index}, @code{rindex} and @code{ffs} may be handled
|
||||
as built-in functions. All these functions have corresponding versions
|
||||
@code{bzero}, @code{index}, @code{rindex}, @code{ffs}, @code{fputs_unlocked},
|
||||
@code{printf_unlocked} and @code{fprintf_unlocked} may be handled as
|
||||
built-in functions. All these functions have corresponding versions
|
||||
prefixed with @code{__builtin_}, which may be used even in strict C89
|
||||
mode.
|
||||
|
||||
|
|
|
|||
|
|
@ -1,3 +1,12 @@
|
|||
2001-12-20 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
|
||||
|
||||
* gcc.dg/format/builtin-1.c: Test unlocked stdio.
|
||||
* gcc.dg/format/c90-printf-3.c: Likewise.
|
||||
* gcc.dg/format/c99-printf-3.c: Likewise.
|
||||
* gcc.dg/format/ext-1.c: Likewise.
|
||||
* gcc.dg/format/ext-6.c: Likewise.
|
||||
* gcc.dg/format/format.h: Prototype unlocked stdio.
|
||||
|
||||
2001-12-20 Richard Henderson <rth@redhat.com>
|
||||
|
||||
* g++.old-deja/g++.eh/badalloc1.C (arena_size): New.
|
||||
|
|
|
|||
|
|
@ -14,4 +14,9 @@ foo (int i)
|
|||
__builtin_fprintf (stdout, "%ld", i); /* { dg-warning "format" "__builtin_fprintf" } */
|
||||
__builtin_printf ("%d", i);
|
||||
__builtin_printf ("%ld", i); /* { dg-warning "format" "__builtin_printf" } */
|
||||
|
||||
__builtin_fprintf_unlocked (stdout, "%d", i);
|
||||
__builtin_fprintf_unlocked (stdout, "%ld", i); /* { dg-warning "format" "__builtin_fprintf_unlocked" } */
|
||||
__builtin_printf_unlocked ("%d", i);
|
||||
__builtin_printf_unlocked ("%ld", i); /* { dg-warning "format" "__builtin_printf_unlocked" } */
|
||||
}
|
||||
|
|
|
|||
|
|
@ -16,6 +16,9 @@ foo (int i, char *s, size_t n, va_list v0, va_list v1, va_list v2, va_list v3,
|
|||
fprintf (stdout, "%ld", i); /* { dg-warning "format" "fprintf" } */
|
||||
printf ("%d", i);
|
||||
printf ("%ld", i); /* { dg-warning "format" "printf" } */
|
||||
/* The "unlocked" functions shouldn't warn in c90 mode. */
|
||||
fprintf_unlocked (stdout, "%ld", i); /* { dg-bogus "format" "fprintf_unlocked" } */
|
||||
printf_unlocked ("%ld", i); /* { dg-bogus "format" "printf_unlocked" } */
|
||||
sprintf (s, "%d", i);
|
||||
sprintf (s, "%ld", i); /* { dg-warning "format" "sprintf" } */
|
||||
vfprintf (stdout, "%d", v0);
|
||||
|
|
|
|||
|
|
@ -15,6 +15,9 @@ foo (int i, char *s, size_t n, va_list v0, va_list v1, va_list v2, va_list v3,
|
|||
fprintf (stdout, "%ld", i); /* { dg-warning "format" "fprintf" } */
|
||||
printf ("%d", i);
|
||||
printf ("%ld", i); /* { dg-warning "format" "printf" } */
|
||||
/* The "unlocked" functions shouldn't warn in c99 mode. */
|
||||
fprintf_unlocked (stdout, "%ld", i); /* { dg-bogus "format" "fprintf_unlocked" } */
|
||||
printf_unlocked ("%ld", i); /* { dg-bogus "format" "printf_unlocked" } */
|
||||
sprintf (s, "%d", i);
|
||||
sprintf (s, "%ld", i); /* { dg-warning "format" "sprintf" } */
|
||||
snprintf (s, n, "%d", i);
|
||||
|
|
|
|||
|
|
@ -116,4 +116,11 @@ foo (quad_t q, u_quad_t uq, quad_t *qn, size_t z, size_t *zn, long long int ll,
|
|||
printf ("%IC", lc); /* { dg-warning "flag" "bad use of I flag" } */
|
||||
printf ("%IS", ls); /* { dg-warning "flag" "bad use of I flag" } */
|
||||
printf ("%Im"); /* { dg-warning "flag" "bad use of I flag" } */
|
||||
|
||||
/* As an extension, GCC does format checking on "unlocked"
|
||||
i.e. thread unsafe versions of these functions. */
|
||||
fprintf_unlocked (stdout, "%d", i);
|
||||
fprintf_unlocked (stdout, "%ld", i); /* { dg-warning "format" "fprintf_unlocked" } */
|
||||
printf_unlocked ("%d", i);
|
||||
printf_unlocked ("%ld", i); /* { dg-warning "format" "printf_unlocked" } */
|
||||
}
|
||||
|
|
|
|||
|
|
@ -16,6 +16,10 @@ foo (int i, char *s, size_t n, int *ip, va_list v0, va_list v1, va_list v2,
|
|||
fprintf (stdout, "%ld", i); /* { dg-warning "format" "fprintf" } */
|
||||
printf ("%d", i);
|
||||
printf ("%ld", i); /* { dg-warning "format" "printf" } */
|
||||
fprintf_unlocked (stdout, "%d", i);
|
||||
fprintf_unlocked (stdout, "%ld", i); /* { dg-warning "format" "fprintf_unlocked" } */
|
||||
printf_unlocked ("%d", i);
|
||||
printf_unlocked ("%ld", i); /* { dg-warning "format" "printf_unlocked" } */
|
||||
sprintf (s, "%d", i);
|
||||
sprintf (s, "%ld", i); /* { dg-warning "format" "sprintf" } */
|
||||
snprintf (s, n, "%d", i);
|
||||
|
|
|
|||
|
|
@ -67,6 +67,8 @@ extern FILE *stdout;
|
|||
|
||||
extern int fprintf (FILE *restrict, const char *restrict, ...);
|
||||
extern int printf (const char *restrict, ...);
|
||||
extern int fprintf_unlocked (FILE *restrict, const char *restrict, ...);
|
||||
extern int printf_unlocked (const char *restrict, ...);
|
||||
extern int sprintf (char *restrict, const char *restrict, ...);
|
||||
extern int vfprintf (FILE *restrict, const char *restrict, va_list);
|
||||
extern int vprintf (const char *restrict, va_list);
|
||||
|
|
|
|||
Loading…
Reference in New Issue