2026-10-22 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* src/SDCCgen.h (lineElem_t, lineNode): Record possible volatile accesses.
	* src/SDCCpeeph.c (mightHaveVolatileAccess, notVolatileVariable,
	  notVolatile, replaceRule, peepHole): Preserve volatile-access information
	  through peephole replacements, including SET_VALUE_AT_ADDRESS stores,
	  protecting required accesses even when instruction iCode associations
	  are lost or changed (bugs #4202, #4203 and #4204). Make the no-parameter
	  notVolatile rule restriction use the preserved information instead of
	  scanning the lines’ current iCode associations.

2026-10-22 Philipp Klaus Krause <philipp@colecovision.eu>

	* src/z80/gen.c,
	  support/regression/tests/bug-4186.c:
	  Fix bug #4186.

2026-10-22 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* src/SDCCpeeph.c (notVolatileVariable):
	  Resolve exact Z80-family direct symbol operands through the symbol
	  table when checking volatility. Retain the conservative fallback for
	  indirect accesses, address expressions and unresolved symbols. Restore
	  redundant-load elimination affected by bug #4149.

2026-10-22 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* support/regression/MakeList: Enable qct/0036-notneg.c on MCS51
	  and DS390 (bug #3392).
	* support/regression/qct/0036-notneg.c: Identify the bug tested.
	* support/regression/tests/bug-3392.c: Remove the duplicate test.

2026-10-21 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* src/SDCCicode.h (enum pointerCheckKind): Add POINTER_RELATIONAL.
	* src/SDCCicode.c (picPointerCheck, geniCodeLogic):
	  Record relational pointer checks before the common type can add
	  _Optional to the other operand (bug #4169).
	* src/SDCCopt.c (checkStaticArrayParams):
	  Diagnose the recorded source operands instead of the converted
	  comparison operands.
	* support/valdiag/tests/bug-4169.c: Test all four operators in both
	  operand orders, checked and unchecked optional operands, equality
	  comparisons and an explicit cast to an optional target type.

2026-10-21 Philipp Klaus Krause <philipp@colecovision.eu>

	* src/z80/gen.c:
	  Fix bug #4166, inspired by patch by Christopher Bazley.
	* support/regression/tests/bug-4166.c:
	  Test for bug #4166, patch by Christopher Bazley.

2026-10-21 Maarten Brock <sourceforge.brock AT dse.nl>

	* device/include/stdbit.h: fixed parentheses in macros,
	  removed signed _BitInt(1) case because of warning 315,
	  check __SDCC_BITINT_MAXWIDTH >= 64 for stdc_rotate_left/right,
	  picked from patch for bug #4147 by zeynelsagcan
	* device/lib/__stdc_bit_ceilull.c,
	* device/lib/__stdc_bit_width.c,
	* device/lib/__stdc_count_ones.c,
	* device/lib/__stdc_first_leading_one.c,
	* device/lib/__stdc_first_trailing_one.c,
	* device/lib/__stdc_leading_zeros.c,
	* device/lib/__stdc_trailing_ones.c: define ULLONG_WIDTH if non-existent,
	  always include assert.h
	* device/lib/pic16/libc/Makefile.am,
	* device/lib/pic16/libc/Makefile.in: added __stdc_* sources

2026-10-21 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* support/valdiag/tests/bug-4051.c:
	  Test diagnostics for the reported malformed declarations produced by an
	  undefined concatenation macro (bug #4051).

2026-10-21 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* support/regression/tests/bug-3862.c:
	  Test a compound literal using inline function parameters and check the
	  returned pointer and structure members (bug #3862).

2026-10-21 Philipp Klaus Krause <philipp@colecovision.eu>

	* device/include/stdbit.h:
	  Pick some bits from patch for bug #4147 by zeynelsagcan.

2026-10-21 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* support/valdiag/tests/bug-3835.c:
	  Compile both reduced memory-mapped member-access examples from the
	  discussion without executing them (bug #3835).

2026-10-21 Christopher Bazley <chris.bazley.wg14@gmail.com>

	* support/regression/tests/bug-3470.c:
	  Correct the test heading, check the returned value and enable the existing
	  reproducer for MCS51 with stack parameters (bug #3470).

2026-10-21 Christopher Bazley <chris.bazley.wg14@gmail.com>