(1)

How to identify diagnostic messages (5.1.1.3).

(2)

The semantics of the arguments to main (5.1.2.2.1).

(3)

What constitutes an interactive device (5.1.2.3).

(4)

The number of significant initial characters (beyond 31) in an identifier without external linkage (6.1.2).

(5)

The number of significant initial characters (beyond 6) in an identifier with external linkage (6.1.2).

(6)

Whether case distinctions are significant in an identifier with external linkage (6.1.2).

(7)

The members of the source and execution character sets, except as explicitly specified in the Standard (5.2.1).

(8)

The shift states used for the encoding of multibyte characters (5.2.1.2).

(9)

The number of bits in a character in the execution character set (5.2.4.2.1).

(10)

The mapping of members of the source character set (in character constants and string literals) to members of the execution character set (6.1.3.4).

(11)

The value of an integer character constant that contains a character or escape sequence not represented in the basic execution character set or the extended character set for a wide character constant (6.1.3.4).

(12)

The value of an integer character constant that contains more than one character or a wide character constant that contains more than one multibyte character (6.1.3.4).

(13)

The current locale used to convert multibyte characters into corresponding wide characters (codes) for a wide character constant (6.1.3.4).

(14)

Whether a "plain" char has the same range of values as signed char or unsigned char (6.2.1.1).

(15)

The representations and sets of values of the various types of integers (6.1.2.5).

(16)

The result of converting an integer to a shorter signed integer, or the result of converting an unsigned integer to a signed integer of equal length, if the value cannot be represented (6.2.1.2).

(17)

The results of bitwise operations on signed integers (6.3).

(18)

The sign of the remainder on integer division (6.3.5).

(19)

The result of a right shift of a negative-valued signed integral type (6.3.7).

(20)

The representations and sets of values of the various types of floating-point numbers (6.1.2.5).

(21)

The direction of truncation when an integral number is converted to a floating-point number that cannot exactly represent the original value (6.2.1.3).

(22)

The direction of truncation or rounding when a floating-point number is converted to a narrower floating-point number (6.2.1.4).

(23)

The type of integer required to hold the maximum size of an array --- that is, the type of the sizeof operator, size_t (6.3.3.4, 7.1.1).

(24)

The result of casting a pointer to an integer or vice versa (6.3.4).

(25)

The type of integer required to hold the difference between two pointers to members of the same array, ptrdiff_t (6.3.4, 7.1.1).

(26)

The extent to which objects can actually be placed in registers by use of the register storage-class specifier (6.5.1).

(27)

A member of a union object is accessed using a member of a different type (6.3.2.3).

(28)

The padding and alignment of members of structures (6.5.2.1).

(29)

Whether a "plain" int bit-field is treated as a signed int bit-field or as an unsigned int bit-field (6.5.2.1).

(30)

The order of allocation of bit-fields within an int (6.5.2.1).

(31)

Whether a bit-field can straddle a storage-unit boundary (6.5.2.1).

(32)

The integer type chosen to represent the values of an enumeration type (6.5.2.2).

(33)

What constitutes an access to an object that has volatile-qualified type (6.5.3).

(34)

The maximum number of declarators that may modify an arithmetic, structure, or union type (6.5.4).

(35)

The maximum number of case values in a switch statement (6.6.4.2).

(36)

Whether the value of a single-character character constant in a constant expression that controls conditional inclusion matches the value of the same character constant in the execution character set. Whether such a character constant may have a negative value (6.8.1).

(37)

The method for locating includable source files (6.8.2).

(38)

The support for quoted names for includable source files (6.8.2).

(39)

The mapping of source file character sequences (6.8.2).

(40)

The behavior on each recognized #pragma directive (6.8.6).

(41)

The definitions for __DATE__ and __TIME__ when respectively, the date and time of translation are not available (6.8.8).

(42)

The null pointer constant to which the macro NULL expands (7.1.6).

(43)

The diagnostic printed by and the termination behavior of the assert function (7.2).

(44)

The sets of characters tested for by the isalnum, isalpha, iscntrl, islower, isprint, and isupper functions (7.3.1).

(45)

The values returned by the mathematics functions on domain errors (7.5.1).

(46)

Whether the mathematics functions set the integer expression errno to the value of the macro ERANGE on underflow range errors (7.5.1).

(47)

Whether a domain error occurs or zero is returned when the fmod function has a second argument of zero (7.5.6.4).

(48)

The set of signals for the signal function (7.7.1.1).

(49)

The semantics for each signal recognized by the signal function (7.7.1.1).

(50)

The default handling and the handling at program startup for each signal recognized by the signal function (7.7.1.1).

(51)

If the equivalent of signal(sig, SIG_DFL); is not executed prior to the call of a signal handler, the blocking of the signal that is performed (7.7.1.1).

(52)

Whether the default handling is reset if the SIGILL signal is received by a handler specified to the signal function (7.7.1.1).

(53)

Whether the last line of a text stream requires a terminating new-line character (7.9.2).

(54)

Whether space characters that are written out to a text stream immediately before a new-line character appear when read in (7.9.2).

(55)

The number of null characters that may be appended to data written to a binary stream (7.9.2).

(56)

Whether the file position indicator of an append mode stream is initially positioned at the beginning or end of the file (7.9.3).

(57)

Whether a write on a text stream causes the associated file to be truncated beyond that point (7.9.3).

(58)

The characteristics of file buffering (7.9.3).

(59)

Whether a zero-length file actually exists (7.9.3).

(60)

The rules for composing valid file names (7.9.3).

(61)

Whether the same file can be open multiple times (7.9.3).

(62)

The effect of the remove function on an open file (7.9.4.1).

(63)

The effect if a file with the new name exists prior to a call to the rename function (7.9.4.2).

(64)

The output for %p conversion in the fprintf function (7.9.6.1).

(65)

The input for %p conversion in the fscanf function (7.9.6.2).

(66)

The interpretation of a - character that is neither the first nor the last character in the scan list for %[ conversion in the fscanf function (7.9.6.2).

(67)

The value to which the macro errno is set by the fgetpos or ftell function on failure (7.9.9.1, 7.9.9.4).

(68)

The messages generated by the perror function (7.9.10.4).

(69)

The behavior of the calloc, malloc, or realloc function if the size requested is zero (7.10.3).

(70)

The behavior of the abort function with regard to open and temporary files (7.10.4.1).

(71)

The status returned by the exit function if the value of the argument is other than zero, EXIT_SUCCESS, or EXIT_FAILURE (7.10.4.3).

(72)

The set of environment names and the method for altering the environment list used by the getenv function (7.10.4.4).

(73)

The contents and mode of execution of the string by the system function (7.10.4.5).

(74)

The contents of the error message strings returned by the strerror function (7.11.6.2).

(75)

The local time zone and Daylight Saving Time (7.12.1).

(76)

The era for the clock function (7.12.2.1).