C17

ISO/IEC 9899:2018, a.k.a. C17/C18 (denote the year of completion and publication respectively), is the current revision of the C standard.

C17 is same as C11, except that it bumps the __STDC_VERSION__ predefined macro to 201710L, contains several defect reports, and deprecates some features.

Obsolete

Deprecated

ATOMIC_VAR_INIT
Support for calling realloc() with zero size

Defect reports

Defect Reports fixed in C17 (54 defects)
DR 400 DR 401 DR 402 DR 403 DR 404 DR 405 DR 406 DR 407 DR 410 DR 412 DR 414 DR 415 DR 416 DR 417 DR 419 DR 423 DR 426 DR 428 DR 429 DR 430 DR 431 DR 433 DR 434 DR 436 DR 437 DR 438 DR 439 DR 441 DR 444 DR 445 DR 447 DR 448 DR 450 DR 452 DR 453 DR 457 DR 458 DR 459 DR 460 DR 462 DR 464 DR 465 DR 468 DR 470 DR 471 DR 472 DR 473 DR 475 DR 477 DR 480 DR 481 DR 485 DR 487 DR 491

Language
Headers
Type support
Program utilities
Variadic function support
Error handling
Dynamic memory management
Strings library
Algorithms
Numerics
Date and time utilities
Input/output support
Localization support
Concurrency support (C11)
Technical Specifications
Symbol index

C89
C95
C99
C11
C17
C23
Current Status

C17

Obsolete

Deprecated

Defect reports

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