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Oracle Solaris Studio 12.3: C User's Guide     Oracle Solaris Studio 12.3 Information Library
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1.  Introduction to the C Compiler

2.  C-Compiler Implementation-Specific Information

2.1 Constants

2.1.1 Integral Constants

2.1.2 Character Constants

2.2 Linker Scoping Specifiers

2.3 Thread Local Storage Specifier

2.4 Floating Point, Nonstandard Mode

2.5 Labels as Values

2.6 long long Data Type

2.6.1 Printing long long Data Types

2.6.2 Usual Arithmetic Conversions

2.7 Case Ranges in Switch Statements

2.8 Assertions

2.9 Supported Attributes

2.10 Warnings and Errors

2.11 Pragmas

2.11.1 align

2.11.2 c99

2.11.3 does_not_read_global_data

2.11.4 does_not_return

2.11.5 does_not_write_global_data

2.11.6 dumpmacros

2.11.7 end_dumpmacros

2.11.8 error_messages

2.11.9 fini

2.11.10 hdrstop

2.11.11 ident

2.11.12 init

2.11.13 inline

2.11.14 int_to_unsigned

2.11.15 must_have_frame

2.11.16 nomemorydepend

2.11.17 no_side_effect

2.11.18 opt

2.11.19 pack

2.11.20 pipeloop

2.11.21 rarely_called

2.11.22 redefine_extname

2.11.23 returns_new_memory

2.11.24 unknown_control_flow

2.11.25 unroll

2.11.26 warn_missing_parameter_info

2.11.27 weak

2.12 Predefined Names

2.13 Preserving the Value of errno

2.14 Extensions

2.14.1 _Restrict Keyword

2.14.2 __asm Keyword

2.14.3 __inline and __inline__

2.14.4 __builtin_constant_p()


2.15 Environment Variables




2.15.4 TMPDIR

2.16 How to Specify Include Files

2.16.1 Using the -I- Option to Change the Search Algorithm Warnings

2.17 Compiling in Free-Standing Environments

2.18 Compiler Support for Intel MMX and Extended x86 Platform Intrinsics

3.  Parallelizing C Code

4.  lint Source Code Checker

5.  Type-Based Alias Analysis

6.  Transitioning to ISO C

7.  Converting Applications for a 64-Bit Environment

8.  cscope: Interactively Examining a C Program

A.  Compiler Options Grouped by Functionality

B.  C Compiler Options Reference

C.  Implementation-Defined ISO/IEC C99 Behavior

D.  Features of C99

E.  Implementation-Defined ISO/IEC C90 Behavior

F.  ISO C Data Representations

G.  Performance Tuning

H.  Oracle Solaris Studio C: Differences Between K&R C and ISO C


2.12 Predefined Names

A current list of predefinitions is given in the cc(1) man page.

The __STDC__ identifier is predefined as an object-like macro as shown in the following table.

Table 2-3 Predefined Identifier __STDC__

Expands to:
When compiled with
Not defined

The compiler issues a warning if __STDC__ is undefined (#undef __STDC__). __STDC__ is not defined in -Xs mode.