2026-11-02 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* src/SDCCsymt.h, src/SDCCsymt.c (newEnumType, mergeSpec): Preserve
	  whether an enumeration has a fixed underlying type.
	* src/SDCC.y (simple_typed_enum_decl): Establish the tagged
	  enumeration type in declarations without an enumerator list.
	  (enum_specifier, simple_typed_enum_decl): Diagnose incompatible
	  underlying types and changes of fixedness in the same scope
	  (bug #4176).
	* src/SDCCerr.h, src/SDCCerr.c: Add E_ENUM_REDECL.
	* support/valdiag/tests/bug-4176.c: Check incompatible declarations,
	  compatible typedefs, definitions, inner-scope shadowing and sibling
	  blocks at equal nesting levels, including later redeclarations.
	* support/regression/tests/bug-4176.c: Check object widths, compatible
	  underlying type and values before and after the enum definition.

2026-11-02 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* src/SDCCast.c (hasConstMember, decorateType): Diagnose aggregate
	  assignments with const-qualified members, recursively including
	  nested aggregates and array elements. Stop at pointer members and
	  allow initialisation (bug #4210).
	* support/valdiag/tests/bug-4210.c: Test nested structures, unions,
	  arrays, const pointer members, pointers to const and valid
	  initialisation and member assignments.

2026-11-02 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* src/SDCCsymt.c (mergeDeclSpec): Apply qualifiers on an array
	  typedef to its first non-array element. Put qualifiers on pointer
	  elements rather than their targets (bug #4164).
	* support/regression/tests/bug-4164.c: Test const, volatile, restrict
	  and _Optional qualification of array typedefs, multiple dimensions,
	  pointer depth and preservation of qualified pointer targets.

2026-11-02 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* src/SDCCutil.c, src/SDCCutil.h (parseEscape, escapeValueInRange,
	  copyStrWithEscapeLimit, copyStr): Share escape decoding between
	  character and string literals. Check numeric escapes before narrowing,
	  including overflow in strtoul. Preserve unrestricted decoding for
	  non-literal uses such as inline assembly (bug #4179).
	* src/SDCCval.c (literalEscapeLimit, strVal, charVal,
	  constCharacterVal): Apply prefix-specific numeric escape limits.
	  Distinguish numeric byte escapes from universal character names and
	  require a u8 character literal to end after its single code unit.
	* src/SDCCerr.c: Reword warning 137 for numeric escapes.
	* support/valdiag/tests/bug-4179.c: Check numeric limits, overflow,
	  malformed delimited escapes, trailing characters and valid escapes.
	  Select tests by language features and wide-character limits.
	* support/regression/tests/bug-4179.c: Check stored literal values,
	  simple escapes, delimited escapes and prefix-specific boundaries.
	  Account for signed wchar_t when checking its unsigned escape value.

2026-11-02 Philipp Klaus Krause <philipp@colecovision.eu>

	* src/pic16/pcode.c:
	  Fix bug #4236 via patch by zeynelsagcan.
	* src/z80/gen.c,
	  support/regression/tests/bug-4206.c:
	  Fix bug #4206.

2026-11-02 Gabriele Gorla <gorlik@yahoo.com>

	* configure,
	  configure.ac,
	  device/lib/Makefile.in,
	  device/lib/ds390/Makefile.in,
	  device/lib/ds400/Makefile.in,
	  device/lib/incl.mk,
	  src/ds390/main.c,
	  support/regression/ports/ds390/spec.mk:
	  Merge the ds390 and ds400 library into one file.
	* device/lib/f8/Makefile.in,
	  device/lib/f8l/Makefile.in,
	  device/lib/hc08/Makefile.in,
	  device/lib/huc6280/Makefile.in,
	  device/lib/mos6502/Makefile.in,
	  device/lib/mos6502-stack-auto/Makefile.in,
	  device/lib/mos65c02/Makefile.in,
	  device/lib/mos65c02-stack-auto/Makefile.in,
	  device/lib/pdk13/Makefile.in,
	  device/lib/pdk14/Makefile.in,
	  device/lib/pdk15/Makefile.in,
	  device/lib/pdk15-stack-auto/Makefile.in,
	  device/lib/s08/Makefile.in,
	  device/lib/s08-stack-auto/Makefile.in,
	  device/lib/sm83/Makefile.in,
	  device/lib/stm8/Makefile.in,
	  device/lib/stm8-large/Makefile.in:
	  Cleanup library makefiles.
	* device/include/xa51,
	  device/lib/ds390/examples:
	  Remove obsolete files.

2026-11-02 Philipp Klaus Krause <philipp@colecovision.eu>

	* src/SDCCsalloc.hpp:
	  Fix bug #4214.