SDCC 3.6.0 Release

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Release schedule

Delivery Planned date Actual date
SDCC 3.6.0 RC1 2016-05-29 2016-05-30
SDCC 3.6.0 RC2 2016-06-05 2016-06-05
SDCC 3.6.0 Release 2016-06-12 2016-06-12

See the SDCC 3.6.0 Release Plan.


If you think there is a functionality that should be included or a bug that needs to be fixed in the release, please submit it to the Feature Requests at or Bugs at and copy Request ID and Summary fields to the following table, where:

Request ID: Request ID from Feature Requests or Bugs
Summary: Summary from Feature Requests or Bugs
Proposed by: Who proposed the feature or bug fix
Time: Estimate of the implementation time
Developer: Who will implement the feature or bug fix
Status: Current status

Request ID Summary Proposed by Time Developer Status
2870755 Accessing the stack spth POSTPONED
sdas merge with asxxxx 5.0 borutr a lot more borutr/maarten work in progress
2085 mcs51/ds390 bool fails when bit type is not allowed spth POSTPONED
1710546 struct: aggregate assignment spth POSTPONED
674638 structures cannot be passed as function parameters spth POSTPONED
3326880 float classification macros spth POSTPONED
3486540 gcc-torture-execute-pr38212 fails spth POSTPONED
3486535 gcc-torture-execute-pr20466-1 fails spth POSTPONED
3502632 gcc-torture-execute-20010224-1 fails for z80-related spth POSTPONED
3513256 long long integer constants spth DONE
3486538 gcc-torture-execute-pr28982a fails on r2k spth DONE
3289630 variable length arrays spth POSTPONED
3495899 CSE ignores pointer aliasing problems. spth POSTPONED
3512525 Macros in float.h spth Ben Shi DONE
3575227 Initialized data stored twice in the output (string lit.) spth Ben Shi DONE
3573141 Handle static vars like global ones in initialization spth POSTPONED
327 mcs51 code in device/lib spth POSTPONED
1693 False "unreachable code" warnings when using "--nolabelopt" spth Ben Shi DONE
1731 More sdcdb bugs spth POSTPONED
2070 Linker uses wrong output filename spth Ben Shi DONE
403 Regression testing for pic16 spth POSTPONED
1866 [PIC16] Global variables not initialized to 0 by default (maybe enable crt0iz as default) DiegoHerranz QUASIDONE
2241 wrong code generated for a function call inside nested loops spth POSTPONED
451 Intermingled declarations and code spth POSTPONED
165 C99 compliance: for (int i=0; ... spth POSTPONED
332 Compound literals spth POSTPONED
127 Support for Unicode character strings spth spth DONE
450 K & R function style spth POSTPONED
2425 Compiling in C11 mode: Lack of preprocessor support spth spth DONE
2405 Missing pdf bookmarks in manual spth spth DONE

Feature List

There is always a problem to create a list of new features when a new SDCC release is announced. The following list is an attempt to create such a list "on the fly". Every time a new feature which is visible or interesting for the SDCC users is implemented, it should be added to the following list.

  • Merged upstream binutils 2.25
  • Workaround for stm8 division hardware bug
  • Diagnostic for missing type specifier: No implicit int outside of C90 mode anymore
  • C11 generic selections
  • Character constants are now of type int instead of char.
  • pic16 port now uses standard-compliant crt0iz that initializes static and globals to 0 by default
  • ISO C95 and ISO C11 wide character constants
  • New memory management with lower overhead
  • Changed default language dialect to --std-sdcc11
  • ELF/DWARF support for stm8
  • char is now unsigned by default (old behaviour can be restored using --fsigned-char)
  • ISO C95 and ISO C11 wide string literals
  • Basic standard library support for wide characters: c16rtomb(), mbrtoc16(), mbsinit(), mbtowc(), mbrlen(), mbrtoc32, c32rtomb(), mbrtowc(), wcrtomb(), mblen(), wctomb()
  • Reorganized interrupt handling for z80, z180, r2k, r3ka, tlcs90, gbz80 backends
  • Treat all ports the same in the manual (i.e. mcs51-specific stuff is now clearly described as such)
  • Output symbol table for ELF
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