Fix list for XL C for AIX

Product Documentation

Abstract

This document contains a complete listing of releases, refreshes (also known as mod packs), and fix packs (also known as PTFs) sorted by version for IBM XL C for AIX.

Content

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Support Resources

IBM XL Compiler Support

To open a PMR against the XL C for AIX product, use the IBM Service Request Tool .
Visit the IBM Support Portal to review FAQs, lists of known problems, fixes, and a wealth of important support information.
To request and track product feature enhancements, visit the IBM RFE Community .
Interact with other compiler users on the XL Compilers on Power® Community

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Helpful Hints For Obtaining Technical Assistance:

Before you contact IBM XL Compiler Support, gather the background information that you need to describe the problem. When you describe a problem to an IBM software support specialist, be as specific as possible and include all relevant background information so that the specialist can help you solve the problem efficiently. To save time, know the answers to these questions:

Can the issue be reduced to a small test case?
- Review technote 1084174: Test Case Reduction Techniques for details.
Can the test case be provided to IBM?
- Review technote 1260804: Test case preparation for IBM XL compilers support for details.
What compiler version and fix pack level were you using when the problem occurred?
- This can be found by compiling with the -qversion=verbose compiler option.
Do you have logs, traces, or messages that are related to the problem?
Can you reproduce the problem? If so, what steps and compiler options do you use to reproduce it?
Is there a workaround for the problem? If so, be prepared to describe the workaround.

If you have helpful information to diagnose or identify the problem on your system, you can provide this data by following the instructions to exchange information with IBM Technical Support .

**13.1.3 Fix Pack 8**
Link	Date Released	Status
Download 13.1.3.8 (Info)	27 June 2023	Current

APAR	Description
IJ43796	URT report showing concurrent users within a minute even though they do not overlap within that minute

**13.1.3 Fix Pack 7**
Link	Date Released	Status
Download 13.1.3.7 (Info)	10 January 2022	Superseded

APAR	Description
IJ36850	URT dumps core while generating report
IJ36569	IPA and PDF2 link optimizing away necessary exception call
IJ27122	C++ function returns the wrong result when compiled -O2
IJ36802	IPA issues a Signal 11
IJ36847	Adding support for AIX7.3 to XL C for AIX, V13.1.3

**13.1.3 Fix Pack 6**
Link	Date Released	Status
Download 13.1.3.6	30 May 2019	Superseded

APAR	Description
IJ16324	Duplicated else block when using -qhot
IJ14076	Incorrect variable value when compiled with -O3
IJ16404	XL C for AIX, V13.1.3.6 Fix Pack (May 2019)

**13.1.3 Fix Pack 5**
Link	Date Released	Status
Download 13.1.3.5	13 August 2018	Superseded

APAR	Description
IJ08148	dis tool strips #pragma comment data
IJ08150	Internal compiler error in xlcentry
IJ08152	Bad cast causing incorrect AIX _LARGE_FILES tellg() value
IJ08155	xlC generating wrong code for C++ method
IJ08162	pointer dereference conditional in loop causing bad output
IJ08165	Inlining of user function causes incorrect output
IJ08166	Incorrect static string with optimization
IJ08167	Insufficient storage with very large program
IJ08168	Bad intermediate preprocessor macro expansion for function-like macro invocation
IJ02718	Function call not using -qpic=large TOC access
IJ08174	-D_LARGE_FILES causing compile time error
IJ06072	Compiler generating incorrect code leading to memory fault
IJ08104	Incorrect code gen for POWER8
IJ08175	Unreplaced stringized value with __VA_ARGS__ usage when macro and macro-parameter match
IJ08176	Incorrect linker relocation with -O2 and -qfuncsect
IJ08116	Compiler generates spurious .lst files when compiling
IJ08177	Internal compiler error in xlcentry
IJ08178	Missing (S) error output after (W) warning when using -qshowinc and -qsource
IJ06432	Global designated initializer using compound literal failing with extc99
IJ08170	XL C for AIX, V13.1.3.5 Fix Pack (July 2018)

**13.1.3 Fix Pack 4**
Link	Date Released	Status
Download 13.1.3.4	28 April 2017	Superseded

APAR	Description
IV95470	Internal compiler error in xlCcode during a PDF2 link
IV95419	-P causing driver to insert #pragma tls into preprocessed file
IV94499	Internal compiler error - GRARNN: cr1180 is used before it is defined
IV95362	XL C for AIX, V13.1.3.4 Fix Pack (April 2017)

**13.1.3 Fix Pack 3**
Link	Date Released	Status
Download 13.1.3.3	23 December 2016	Superseded

APAR	Description
IV91690	-qsrcmsg option may generate invalid line number
IV91682	Global typedef interferes with function parameter with the same name
IV86811	-qcheck=unset causing unnecessary trap
IV91683	Invalid qinfo=cnd syntax error message
IV91684	Parameter type error for vector built-ins vec_cmpge and vec_cmple
IV91685	Signal 11 with -O3 and -qoptdebug
IV91686	Unexpected istringstream setprecision float value rounding
IV91697	XL C for AIX, V13.1.3.3 Fix Pack (December 2016)

**13.1.3 Fix Pack 2**
Link	Date Released	Status
Download 13.1.3.2	30 August 2016	Superseded

Note: There is no V13.1.3.1 Compiler PTF

APAR	Description
IV80991	Incorrect output with -O2
IV84210	Cannot compile designated initializers
IV85626	Internal compiler error with -qinclude and invalid preprocessor directive
IV85627	Previous macro substitution and concatenation preventing stringification
IV85628	Invalid label value expression causing internal compiler error
IV85629	Successive labels in array of label addresses causing linker RLD error
IV85630	Invalid qwarn64 message with va_start
IV85633	Corrupt object files/DWARF debug info with large source files
IV85634	Binary segfault when compiled with IPA/PDF
IV85636	Function-like macro not resolved correctly after multiple substitutions
IV85655	XL C for AIX Fix Pack 2 (July 2016 PTF) for 13.1.3

**13.1.3.0 Mod Release**
Link	Date Released	Status
Download 13.1.3.0	11 December 2015	Superseded

**13.1.2.0 Mod Release**
Link	Date Released	Status
Download 13.1.2.0	19 June 2015	Superseded

Note: There is no V13.1.1 release of XL C for AIX. The first XL C for AIX V13.1.X mod pack refresh is V13.1.2.

**13.1.0.14 Fix Pack**
XL C Compiler & Runtime	Date Released
Download 13.1.0.14 (Info)	27 June 2023

XL C/C++ Compiler APARs	Description
IJ43796	URT report showing concurrent users within a minute even though they do not overlap within that minute

**13.1.0.13 Fix Pack**
XL C Compiler & Runtime	Date Released
Download 13.1.0.13 (Info)	21 January 2022

XL C/C++ Compiler APARs	Description
IJ25964	O2 gives wrong result in memcpy when using variable
IJ36456	IPA issues a Signal 11
IJ36817	Compiler not generating code for if statement
IJ36347	IPA and PDF2 link optimizing away necessary exception call
IJ36117	Compiling with -O causes incorrect evaluation of if statement
IJ36856	Adding support for AIX7.3 to XL C for AIX, V13.1

**13.1.0.12 Fix Pack**
XL C Compiler & Runtime	Date Released
Download 13.1.0.12 (Info)	20 January 2020

XL C/C++ Compiler APARs	Description
IJ20412	Incorrect code gen with -O2
IJ15241	Compiling using XL C/C++ for AIX, V13.1 with option -O2 results in a segmentation fault
IJ22057	munch utility unable to process V16.1 libC.a

**Fix Pack 11 (13.1.0.11)**
Link	Date Released	Status
Download 13.1.0.11	3 January 2019	Current

APAR	Description
IJ05348	-D_LARGE_FILES causing compile time error
IJ04580	Unreplaced stringized value with __VA_ARGS__ usage when macro and macro-parameter match
IJ04374	Incorrect linker relocation with -O2 and -qfuncsect
IJ08117	Internal compiler error in xlcentry
IJ05960	Missing (S) error output after (W) when using -qshowinc
IJ06432	Global designated initializer using compound literal failing with extc99
IJ12232	Program gets a stack address when linking with -qlibansi and -qpdf2
IJ12233	Internal compiler error in PDF2 link step
IJ10561	Duplicated else block when using -qhot
IJ12284	XL C for AIX Fix Pack 11 (November 2018 PTF) for 13.1

**Fix Pack 10 (13.1.0.10)**
Link	Date Released	Status
Download 13.1.0.10	5 March 2018	Superseded

APAR	Description
IJ04420	xlC generating wrong code for C++ method
IJ04416	Pointer dereference conditional in loop causing bad output
IJ04415	Inlining of put_execute causes incorrect output
IJ04431	Incorrect static string with IPRA optimization
IJ03682	Insufficient storage with very large program
IJ02394	Bad intermediate macro expansion for function-like macro name
SE68944	The debugger abends with 'CRRDG3002E connection with the debugger engine was lost' message
IJ04600	XL C for AIX Fix Pack 10 (February 2018 Update) for 13.1

**Fix Pack 9 (13.1.0.9)**
Link	Date Released	Status
Download 13.1.0.9	5 July 2017	Superseded

APAR	Description
IV97559	Parameter type error for vector built-ins vec_cmpge and vec_cmple
IV97564	Signal 11 with -O3 and -qoptdebug
IV97565	Internal compiler error in xlCcode during a PDF2 link
IV97566	Unexpected istringstream setprecision float value rounding
IV97600	std::rel_ops operator resolution conflict for reverse_iterator type
IV95895	Internal compiler error in xlcentry
IV97494	Long compile time with -qhot and printf statements
IV97570	XL C for AIX Fix Pack 9 (June 2017 PTF) for 13.1

**Fix Pack 8 (13.1.0.8)**
Link	Date Released	Status
Download 13.1.0.8	23 August 2016	Superseded

APAR	Description
IV84215	-qsrcmsg option may generate invalid line number
IV87860	Global typedef interferes with function parameter with the same name
IV85223	Previous macro substitution and concatenation preventing stringification
IV87912	Invalid label value expression causing internal compiler error
IV87917	Invalid qinfo=cnd syntax error message
IV87925	Successive labels in array of label addresses causing linker RLD error
IV85274	Binary segfault when compiled with IPA/PDF
IV85246	Function-like macro not resolved correctly after multiple substitutions
IV87930	-qhot=level=1 and -q64 causing incorrect output
IV87989	XL C for AIX Fix Pack 8 (August 2016 PTF) for 13.1

**Fix Pack 7 (13.1.0.7)**
Link	Date Released	Status
Download 13.1.0.7	31 May 2016	Superseded

APAR	Description
IV85130	Corrupt object files/DWARF debug info with large source files
IV84805	Internal compiler error with -qinclude and invalid preprocessor directive
IV85216	XL C for AIX Fix Pack 7 (May 2016 PTF) for 13.1

**Fix Pack 6 (13.1.0.6)**
Link	Date Released	Status
Download 13.1.0.6	29 February 2016	Superseded

APAR	Description
IV81773	xlc optimizes away loop with volatile variable
IV80416	Invalid qwarn64 message with va_start
IV81776	Long compile times with -qdbgfmt=dwarf
IV81787	-qipa=level=0 affecting binary execution
IV81922	XL C for AIX Fix Pack 6 (Feb 2016 PTF) for 13.1

**Fix Pack 5 (13.1.0.5)**
Link	Date Released	Status
Download 13.1.0.5	2 December 2015	Superseded

APAR	Description
IV69565	Missed complex type SIMD opportunity causing performance issue
IV75101	Incorrect OMP_STACKSIZE default unit size without suffix
IV75969	-O3 opt with disabled inlining causing incorrect branch
IV75942	setjmp usage with -qhot optimization skips code section
IV77967	Bindlist XLSMPOPTS fails to bind threads to processors
IV79267	Adding support for AIX7.2 to XL C V13.1
IV78006	XL C for AIX Fix Pack 5 (November 2015 PTF) for 13.1
IV78011	XL SMP for AIX Fix Pack 5 (November 2015 PTF) for 4.1

**Fix Pack 4 (13.1.0.4)**
Link	Date Released	Status
Download 13.1.0.4	30 July 2015	Superseded

APAR	Description
IV75526	__bcopy() function definition in builtins.h mismatch with compiler reference
IV75527	IPA changing unsigned divide to signed divide
IV70765	Incorrect conversion from double to integer with -O2
IV75528	Invalid qinfo/qformat message for strftime() specifiers
IV70769	offsetof() not calculated correctly in designated initializer
IV75557	XL C for AIX Fix Pack 4 (July 2015 PTF) for 13.1
IV75353	XL SMP for AIX Fix Pack 4 (July 2015 PTF) for 4.1

**Fix Pack 3 (13.1.0.3)**
Link	Date Released	Status
Download 13.1.0.3	30 April 2015	Superseded

APAR	Description
IV72742	Continuation line in comment section affecting #line numbers
IV72746	Very long compile time with -qdbgfmt=DWARF
IV72747	Auto int to double convert loading incorrect value
IV72769	DWARF debug info inflating object file size
IV72773	Long link time with IPA and PDF
IV72775	IPA causing thread corruption issues
IV62232	addi+stxvd2x not scheduled together
IV62233	Inefficient floating point select
IV68828	Inefficient code for __vec_strmb
IV67274	Bad .o file generated by compiler
IV68820	P7 vector code does not take advantage of P8
IV67336	Compiler should use xxlor instead of xvcpsgnd when using -qarch=pwr8
IV68300	Listing file decodes xxlorc into xxpermdi
IV69875	Compiler abends during link time
IV64752	Inline function not optimized for return type
IV72845	Internal compiler error with double value cast
IV72846	Internal signal 11 IPA error with loop
IV72861	XL C for AIX Fix Pack 3 (April 2015 PTF) for 13.1

**Fix Pack 2 (13.1.0.2)**
Link	Date Released	Status
Download 13.1.0.2	18 December 2014	Superseded

APAR	Description
IV67991	Too many group breaking nops
IV67989	Linker error with -qfuncsect
IV67986	Compiler uses xvcpsgnd instead of xxlor
IV67985	Inefficient code for vec_any_eq for 64-bit vector
IV67981	static/global variable value propagated past function call with -qipa
IV62255	Missed rldimi optimization for __bpermd and __popcnt8
IV67968	Compiler hang causes memory exhaustion
IV62226	Return value from setjmp not saved
IV68017	Signal 11 in xlcentry with omp parallel
IV67979	Incorrect debug info for variable length array
IV38653	Continuation symbol & is not properly handled
IV67770	Bad output for SCHEDULE option and chunk_size < 1 or chunk_size very large
IV67802	XL SMP for AIX Fix Pack 2 (December 2014 PTF) for 4.1
IV68056	XL MASS for AIX Fix Pack 2 (December 2014 PTF) for 8.1
IV67795	XL C for AIX Fix Pack 2 (December 2014 PTF) for 13.1

**Fix Pack 1 (13.1.0.1)**
Link	Date Released	Status
Download 13.1.0.1	30 September 2014	Superseded

APAR	Description
IV65275	Struct initializer list for bitfields not initializing omitted members to null
IV65280	IPA causing incorrect pointer arithmetic
IV65307	Incorrect return from floating point literals
IV65270	-O optimizes away an if clause
IV65310	Improving efficiency of __rdlam routine
IV65306	Compiler adds unnecessary store for vector
IV65273	Compiler does not use vector ops for memset
IV65274	Wrong program output if routine is inline in source compiled using altivec and IPA
IV61656	Inlined memset improvement for constant size
IV61518	Hardware DFP not allowed with -qarch=pwr8
IV57427	Register moves via stack before and after inline assembly
IV65242	Adding support for vec_xl, vec_xl_be, vec_xst and vec_xst_be built-in functions
IV65223	September 2014 XL SMP for AIX, V4.1
IV65419	September 2014 XL MASS for AIX, V8.1
IV65276	September 2014 PTF for XL C for AIX, V13.1

**Initial Release (13.1)**
Link	Date Released	Status
Download 13.1	06 June 2014	Superseded

**12.1.0.23 Fix Pack**
XL C Compiler	Date Released	Status
Download 12.1.0.23 (Info)	8 June 2021	Current

XL C Compiler APARs	Description
IJ22192	Internal compiler error when using -qipa or -qhot with -g5 and above
IJ22213	Internal compiler error with -O2 and -qfuncsect
IJ28201	Bad load offsets with -O and -qfuncsect
IJ22764	Munch utility unable to process V16.1 libc.a
IJ32876	XL C for AIX, V12.1.0.23 Fix Pack (May 2021)

**12.1.0.22 Fix Pack**
XL C Compiler	Date Released	Status
Download 12.1.0.22 (Info)	20 August 2019	Superseded

XL C Compiler APARs	Description
IJ17713	Constant Area being deleted for programs with no compile unit
IJ16907	Internal compiler error while compiling function1
IJ17801	XL C for AIX, V12.1.0.22 Fix Pack (August 2019)

**Fix Pack 21 (12.1.0.21)**
Link	Date Released	Status
Download 12.1.0.21	8 February 2019	Superseded

APAR	Description
IJ13035	XL C for AIX, V12.1.0.21 Fix Pack (January 2019)

**Fix Pack 20 (12.1.0.20)**
Link	Date Released	Status
Download 12.1.0.20	23 April 2018	Superseded

APAR	Description
IJ04704	dis tool strips #pragma comment data
IJ04694	Remove unnecessary uname call in NDI c++filt script
IJ04413	Inlining of user function causes incorrect output
IJ00526	Incorrect static string with optimization
IJ04374	Incorrect linker relocation with -O2 and -qfuncsect
IJ04773	XL C for AIX Fix Pack 20 (March 2018 PTF) for V12.1

**Fix Pack 19 (12.1.0.19)**
Link	Date Released	Status
Download 12.1.0.19	30 August 2017	Superseded

APAR	Description
IV94688	Non-volatile condition registers not saved after C++ exception
IV97980	Internal compiler error in xlcentry
IV97267	Pointer dereference conditional in loop causing bad output
IV97966	Memory fault with -qipa=partition=large
IV98048	XL C for AIX, V12.1.0.19 Fix Pack (August 2017)

**Fix Pack 18 (12.1.0.18)**
Link	Date Released	Status
Download 12.1.0.18	28 February 2017	Superseded

APAR	Description
IV92277	Internal compiler error in xlCcode during a PDF2 link
IV92298	XL C for AIX, V12.1.0.18 Fix Pack (February 2017)

**Fix Pack 17 (12.1.0.17)**
Link	Date Released	Status
Download 12.1.0.17	30 November 2016	Superseded

APAR	Description
IV86897	-qhot=level=1 and -q64 causing incorrect output
IV86872	Internal compiler error in xlCcode
IV90077	Parameter type error for vector built-ins vec_cmpge and vec_cmple
IV89939	XL C for AIX Fix Pack 17 (November 2016 PTF) for 12.1

**Fix Pack 16 (12.1.0.16)**
Link	Date Released	Status
Download 12.1.0.16	25 July 2016	Superseded

APAR	Description
IV82692	Corrupt object files/DWARF debug info with large source files
IV84525	Global typedef interferes with function parameter with the same name
IV85975	Internal compiler error with -O2 and variable init
IV84034	Incorrect DWARF DIE causing debugger error
IV85023	Invalid label value expression causing internal compiler error
IV85383	Invalid qinfo=cnd syntax error message
IV85047	Successive labels in array of label addresses causing linker RLD error
IV86022	XL C for AIX Fix Pack 16 (July 2016 PTF) for 12.1

**Fix Pack 15 (12.1.0.15)**
Link	Date Released	Status
Download 12.1.0.15	25 April 2016	Superseded

APAR	Description
IV82230	Incorrect 1586-475 (W) New definition of function warnings for source files that have not been modifed from PDF1 build
IV82550	XL C for AIX Fix Pack 15 (April 2016 PTF) for 12.1

**Fix Pack 14 (12.1.0.14)**
Link	Date Released	Status
Download 12.1.0.14	31 December 2015	Superseded

APAR	Description
IV75188	-qipa=level=0 affecting binary execution
IV78568	-O causing incorrect return value
IV78575	xlc optimizes away loop with volatile variable
IV78555	Long compile times with -qdbgfmt=dwarf
IV79981	Adding support for AIX7.2 to XL C V12.1
IV78614	XL C for AIX Fix Pack 14 (December 2015 PTF) for 12.1

**Fix Pack 13 (12.1.0.13)**
Link	Date Released	Status
Download 12.1.0.12	28 August 2015	Superseded

APAR	Description
IV73979	Error with __builtin_prefetch usage
IV75177	Improve -qipa=threads=# to achieve better link time
IV72134	IPA changing unsigned divide to signed divide
IV75188	-qipa=level=0 affecting binary execution
IV75234	XL C for AIX Fix Pack 13 (August 2015 PTF) for 12.1

**Fix Pack 12 (12.1.0.12)**
Link	Date Released	Status
Download 12.1.0.12	29 May 2015	Superseded

APAR	Description
IV72030	Continuation line in comment section affecting #line numbers
IV70769	offsetof() not calculated correctly in designated initializer
IV71963	Invalid qinfo/qformat message for strftime() specifiers
IV71285	__bcopy() function definition in builtins.h mismatch with compiler reference
IV68486	Linker error when compiling with -qdbgfmt=dwarf and -qtune=pwr5/pwr7
SE61760	Debugger engine does not properly handle EFAULT returned by sleep or nsleep
SE62069	IBM Debugger for AIX, V12.1 May 2015 PTF
IV72077	XL C for AIX Fix Pack 12 (May 2015 PTF) for 12.1

**Fix Pack 11 (12.1.0.11)**
Link	Date Released	Status
Download 12.1.0.11	26 February 2015	Superseded

APAR	Description
IV67886	-qfunsect changes program output
IV68434	Auto int to double convert loading incorrect value
IV67196	DWARF debug info inflating object file size
IV67199	Optimization with debug causing internal compiler error and hang
IV68485	Very long compile time with -qdbgfmt=DWARF
IV68534	Long link time with IPA and PDF
IV68536	IPA causing thread corruption issues
IV68541	Internal compiler error with -O2 and -qmaxmem=-1
IV68512	XL C for AIX Fix Pack 11 (February 2015 PTF) for 12.1

**Fix Pack 10 (12.1.0.10)**
Link	Date Released	Status
Download 12.1.0.10	31 October 2014	Superseded

APAR	Description
IV65250	Application core dump with -O
IV64517	Incorrect debug info for variable length array
IV57389	Compiler uses xvcpsgnd instead of xxlor
IV62060	Inefficient code for vec_any_eq for 64-bit vector
IV61672	Too many group breaking nops
IV63338	Linker error with -qfuncsect
IV62893	static/global variable value propagated past function call with -qipa
IV65193	Wrong program output if routine is inlined in source compiled using altivec and IPA
IV66225	Signal 11 in xlcentry with omp parallel
IV66245	XL C for AIX Fix Pack 10 (October 2014 PTF) for 12.1

**Fix Pack 9 (12.1.0.9)**
Link	Date Released	Status
Download 12.1.0.9	31 July 2014	Superseded

APAR	Description
IV59939	Struct initializer list for bitfields not initializing omitted members to null
IV62683	IPA causing incorrect pointer arithmetic
IV56267	Incorrect output from floating point literals
IV57444	Intermediate object file location conflict
IV55636	xlc rejects array initialization
IV60939	Improving efficiency of __rdlam routine
IV55902	Invalid output with -O2
IV55854	Inefficient code for -(a!=0)
IV56281	Inefficient load from constant area
IV62591	-O optimizes away an IF clause
IV56216	Stabstring types not defined error
IV62656	July 2014 PTF for XL C for AIX, V12.1

**Fix Pack 8 (12.1.0.8)**
Link	Date Released	Status
Download 12.1.0.8	31 March 2014	Superseded

APAR	Description
IV52638	Internal compiler error with -q32 -O2
IV53918	C compiler incorrectly reports that an identifier is undeclared
IV52918	long long constant with addi/addis+rldic
IV55361	Compiler generates inefficient code
IV54884	-qarch=pwr7 hinders call optimization
IV52183	GRARNN error when not using -qmaxmem=-1
IV56814	Compiler generates inefficient code for unsigned long long to double conversion
IV56792	Optimization causes exe to hang
IV56815	March 2014 PTF for XL C for AIX, V12.1

**Fix Pack 7 (12.1.0.7)**
Link	Date Released	Status
Download 12.1.0.7	31 January 2014	Superseded

APAR	Description
IV53851	January 2014 PTF for XL C for AIX, V12.1

**Fix Pack 6 (12.1.0.6)**
Link	Date Released	Status
Download 12.1.0.6	24 December 2013	Superseded

APAR	Description
IV49902	Incorrect warning for non-portable format specifiers
IV49970	dis output does not show cmpb mnemonic
IV53337	Internal compiler error with -qcheck=all
IV50333	Compiler ignores the xer clobber
IV47496	Incorrect evaluation of bool expression
IV50750	Process signals not being caught properly with PDF
IV51845	Negated comparison to avoid branch
IV49930	Inefficient vector splat built-in function
IV52552	Group ending NOP not scheduled for PWR7
IV53311	Missing load with -O3
IV53318	December 2013 PTF for XL C for AIX, V12.1

**Fix Pack 5 (12.1.0.5)**
Link	Date Released	Status
Download 12.1.0.5	27 September 2013	Superseded

APAR	Description
IV49625	Segfault with limited scope variables
IV49626	Incorrect warning on restrict pointer type
IV49627	Exception bit folded incorrectly with -qfloat=fenv -O2
IV40035	Inefficient code for 64-bit vec_cmpgt
IV42697	Missing xscvdpux instruction for pwr7
IV49628	Undefined reference to '__tls_get_addr' error
IV43118	Suboptimal branchless code for hi !=0
IV43942	Inefficient double to 32-bit unsigned int conversion
IV44027	Incorrect IF statement logic with -O3
IV48060	Improvements to memset generated code
IV45186	Inline ASM parsing label incorrectly
IV46292	Disassembler does not show bpermd instruction
IV49629	Internal compiler error: Symbol table invalid
IV49630	Inconsistent profiling data found in PDF1 and PDF2
IV45170	Error during IPA stage when -qhot is enabled
IV49639	September 2013 PTF for XL C for AIX, V12.1

**Fix Pack 4 (12.1.0.4)**
Link	Date Released	Status
Download 12.1.0.4	27 June 2013	Superseded

APAR	Description
IV44278	Unresolved symbols when compiling with -qipa
IV36931	Compiler adds unnecessary store to stack
IV44279	Infinite loop with -qsmp=omp
IV39402	Infinite loop with -qipa and relink
IV38460	Long compile time with -qipa=level=2
IV38509	Program abends compiled with -qpdf=level=2
IV38082	dis stops disassembling with pwr7 instructions
IV40154	-qsmp=omp -O generates incorrect output
IV44261	Unnecessary OMP for-loop canonical form check
IV37629	suboptimal code sequence for multiplication
IV36100	Suboptimal code for vector < (0,0) comparison
IV37998	Compiler abend with -O3
IV44284	Use lfiwax/lfiwzx for int to float conversion
IV36964	Suboptimal code for vector long long add
IV36987	Inefficient code for trivial vector constants
IV38465	Compiler adds unnecessary store for vector
IV37235	Suboptimal code for vector long long subtract
IV44281	Dwarf error mangled line number gprof message
IV44282	Incorrect output with _Decimal128 type
IV44283	Suboptimal performance to 64 bit code
IV36085	Stabs error for array bounded by static value
IV44247	June 2013 PTF for XL C for AIX, V12.1

**Fix Pack 3 (12.1.0.3)**
Link	Date Released	Status
Download 12.1.0.3	05 April 2013	Superseded

APAR	Description
IV37956	Incorrect loop counter with -qipa
IV37017	Changing warning to error for PDF profile error
IV37039	Compiler abend with -O3
IV37957	Incorrect inline ASM for rldimi
IV37038	Inefficient code for vec_any_nan
IV35873	Unnecessary warning about printf specifier
IV29268	Inefficient load of a 64-bit constant
IV30067	Inefficient 64-bit constant load of 32-bit value
IV33245	Inefficient compare with 32-bit immediates
IV37628	Use lfiwax/lfiwzx for int to float conversion
IV37958	xlc incorrect result with -O3
IV37924	GRARNN internal error with qarch=pwr6 or pwr7
IV28620	Inefficient struct/union init of member
IV36101	Routine vdnint missing from libmassvp7.a
IV33191	Warning message when max cpu_id to startproc
IV37966	March 2013 XL MASS for AIX, V7.1
IV36457	February 2013 XL SMP Runtime
IV37962	March 2013 PTF for XL C for AIX, V12.1

**Fix Pack 2 (12.1.0.2)**
Link	Date Released	Status
Download 12.1.0.2	28 November 2012	Superseded

APAR	Description
IV31753	OMP Parallel error from C99 variable usage
IV31754	xlcentry abend with atomic keyword
IV31755	-q64 and -qlonglit causes incorrect output
IV29885	Compiler incorrectly issues warning 1506-235
IV25896	Compiler dis issues segmentation violation
IV23860	Incorrect output with IPA
IV27635	Unnecessary branch to next instruction
IV26278	Compiler abend with -qpdf link
IV31200	Load word byte reserved in 64-bit mode problem
IV31756	Application segfault at -O3
IV30107	Compiler does not detect __rotatel4 pattern
IV29934	Internal compiler error when using -O2
IV31757	Performance degradation with popcnt on POWER7
IV31758	IPA linking with wrong library extension
IV26282	Compiling with -qdfp causes internal error
IV29473	Test failures with large OpenMP thread counts
IV31593	Performance problem with XLSMPOPTS binding option
IV28577	Memory leak in _heapmin
IV31555	November 2012 XL SMP Runtime
IV31556	November 2012 Memdebug Runtime
IV31558	November 2012 PTF for XL C for AIX, V12.1

**Fix Pack 1 (12.1.0.1)**
Link	Date Released	Status
Download 12.1.0.1	30 August 2012	Superseded

APAR	Description
IV25674	Infinite loop with _Pragma operator
IV22825	Vector initialization creates inefficient code
IV21765	Inefficient code for conditional increment
IV24113	Inefficient vector compare at opt
IV21831	Unnecessary register move for __d128_abs
IV21818	Wrong .machine tag with optimization enabled
IV25664	Internal compiler error in xlCcode with -O2
IV25665	-O causing incorrect output
IV23573	Compiler generates unnecessary extsw calls
IV25666	Branch hints with execution_frequency ignored
IV22090	Unnecessary load/store for _Decimal128
IV22709	Incorrect output with -O2
IV23837	Inefficient compare with 0x8000000000000000
IV25678	Runtime failure due to incorrect aliasing
IV25667	Loop/segfault with -qipa on the link step
IV22789	Missing alias in ipa/pdf build
IV25669	Long compile time with IPA
IV25668	Internal compiler error in IPA64
IV25681	Internal error with -qsimd
IV22045	showpdf binary segfaults when reading profile
IV21992	Promote (E) to (S) for 1586-401 message
IV25682	Internal compiler error with -qdfp
IV26399	Performance problem with XLSMPOPTS binding option
IV26400	August 2012 XL SMP Runtime
IV25643	August 2012 PTF for XL C for AIX, V12.1

**Initial Release (12.1)**
Link	Date Released	Status
Download 12.1 using one of the options below:	01 June 2012	Superseded

Download options:

APAR	Description
IV39332	Incorrect warning on restrict pointer type
IV36069	Exception bit folded incorrectly with -qfloat=fenv -O2
IV41977	Suboptimal performance to 64 bit code
IV45812	Internal compiler error: Symbol table invalid
IV40580	Inconsistent profiling data found in PDF1 and PDF2
IV47032	August 2013 PTF for XL C for AIX, V11.1

**Fix Pack 14 (11.1.0.14)**
Link	Date Released	Status
Download 11.1.0.14	23 May 2013	Superseded

APAR	Description
IV37692	Incorrect output with _Decimal128 type
IV38234	Unresolved symbols when compiling with -qipa
IV37088	Infinite loop with -qsmp=omp
IV40225	Infinite loop with -qipa and relink
IV40452	Adding support for IBM PASE for i 7.1
IV40237	May 2013 PTF for XL C for AIX, V11.1

**Fix Pack 13 (11.1.0.13)**
Link	Date Released	Status
Download 11.1.0.13	26 February 2013	Superseded

APAR	Description
IV33990	Incorrect result with -O3
IV34103	GRARNN Internal error with qarch=pwr6 or pwr7
IV33243	Incorrect loop counter with -qipa
IV32627	Incorrect inline ASM for rldimi
IV33191	Warning message when max cpu_id to startproc
SE54546	Debugger not stops in assembler code expansion instead of COBOL source
SE54537	IBM Debugger for AIX January 2013 PTF
IV33783	Memory leak in _heapmin
IV33787	January 2013 Memdebg Runtime
IV36457	February 2013 XL SMP Runtime
IV36453	February 2013 PTF for XL C for AIX. V11.1

**Fix Pack 12 (11.1.0.12)**
Link	Date Released	Status
Download 11.1.0.12	21 October 2012	Superseded

APAR	Description
IV29524	Internal compiler error with -qsimd=auto
IV29519	Performance degradation with popcnt on POWER7
IV27651	IPA linking with wrong library extension
IV23063	OMP Parallel error from C99 variable usage
IV26832	-q64 and -qlonglit causes incorrect output
IV29472	October 2012 PTF for XL C for AIX, V11.1
IV29474	October 2012 XL SMP Runtime

**Fix Pack 11 (11.1.0.11)**
Link	Date Released	Status
Download 11.1.0.11	27 July 2012	Superseded

APAR	Description
IV21969	Internal compiler error with -qdfp
IV21660	Incorrect debug info for dbx
IV22269	Branch hints with execution_frequency ignored
IV24367	Loop/segfault with -qipa on the link step
IV24375	Long compile time with IPA
IV20667	Internal compiler error in ipa64
IV23298	Internal error with -qsimd
IV24368	Compiler abend with -qipa
IV24389	Inline asm may cause segmentation fault
IV19669	Wrong .machine tag with optimization enabled
IV20818	Incorrect output with -O2
IV24369	Internal compiler error in xlCcode with -O2
IV20936	-O causing incorrect output
IV18658	Infinite loop with _Pragma operator
IV20901	omp_set_schedule call is ignored
IV24374	July 2012 XL SMP Runtime
IV24370	July 2012 PTF for XL C for AIX, V11.1

**Fix Pack 10 (11.1.0.10)**
Link	Date Released	Status
Download 11.1.0.10	17 April 2012	Superseded

APAR	Description
IV14903	Invalid output at -O2, -O3, -O4 in 64-bit mode
IV13924	Overlaping csects causing linker error
IV11642	Incorrect DFP instruction in -qlist
IV18499	Non virtual thunk error at link time
IV18599	ASM error with [name] and + operand
IV18500	Issues with bool val and cc
IV18369	April 2012 PTF for XL C for AIX, V11.1

**Fix Pack 9 (11.1.0.9)**
Link	Date Released	Status
Download 11.1.0.9	26 January 2012	Superseded

APAR	Description
IV09175	Long type loop index causes slowdown at O3
IV09886	Bad stackprotect with variable length array
IV10810	__d128_test_significance performance problem
IV12845	Inefficient register move using xvcpsgnd
IV11119	__fence not blocking mc_func inline
IV10153	Unresolved symbol errors with -qipa
IV11658	Signal 11 in ipa64 with incorrect PDF profile
IV09519	Unresolved symbol error with -qipa=level=0
IV12869	January 2012 PTF for XL C for AIX, V11.1

Related Information

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Fix Central

AIX OS levels supported by XL Compilers

Unsupported C and C++ compilers: links to latest update

XL C for AIX library

[{"Product":{"code":"SSGH2K","label":"XL C for AIX"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Component":"Compiler","Platform":[{"code":"PF002","label":"AIX"}],"Version":"10.1;11.1;12.1;13.1;13.1.2;13.1.3","Edition":"","Line of Business":{"code":"LOB57","label":"Power"}}]

APAR	Description
IV84572	Internal compiler compiler error with -O2 and variable init
IV89375	Adding support for AIX7.2 to XL C for AIX, V11.1
IV87243	XL C for AIX Fix Pack 24 (September 2016 PTF) for 11.1

APAR	Description
IV72087	Incorrect conditional result with -qipa and -q64
IV74498	Crash in invalid exception __DoThrowV6 with qhot=level=0
IV76577	XL C for AIX Fix Pack 22 (September 2015 PTF) for 11.1

APAR	Description
IV61469	struct initializer list for bitfields not initializing omitted members to null
IV63738	August 2014 PTF for XL C for AIX, V11.1

APAR	Description
IV47921	Internal compiler error during IPA link
IV52177	November 2013 PTF for XL C for AIX, V11.1

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Fix list for XL C for AIX

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APAR	Description
IV78407	xlc optimizes away loop with volatile variable
IV82245	Incorrect 1586-475 (W) New definition of function warnings for source files that have not been modifed from PDF1 build
IV81077	XL C for AIX Fix Pack 23 (March 2016 PTF) for 11.1

APAR	Description
IV67892	Continuation line in comment section affecting #line numbers
IV70738	XL C for AIX Fix Pack 21 (April 2015 PTF) for 11.1

APAR	Description
IV58760	IPA causing incorrect pointer arithmetic
IV56047	Intermediate object file location conflict
IV59797	May 2014 PTF for XL C for AIX, V11.1

APAR	Description
IV51008	Missing load with -O3
IV51006	October 2013 PTF for XL C for AIX, V10.1

APAR	Description
IV44421	Optimization problem accessing volatile fields
IV33191	Warning message when max cpu_id to startproc
IV36457	February 2013 XL SMP Runtime
IV45801	July 2013 PTF for XL C for AIX, V10.1

APAR	Description
IV21132	Compiler abend with -qipa
IV26995	Inline asm may cause segmentation fault
IV21461	Internal compiler error in xlCcode with -O2
IV26399	Performance problem with XLSMPOPTS binding option
IV26400	August 2012 XL SMP Runtime
IV26993	September 2012 PTF for XL C for AIX, V10.1

APAR	Description
IV18657	Infinite loop with _Pragma operator
IV20041	May 2012 PTF for XL C for AIX, V10.1

APAR	Description
IV14244	ASM error with {name} and + operand
IV11885	Issues with bool val and cc
IV03698	Multithreaded application hangs
IV09822	November 2011 XL SMP Runtime
IV14125	February 2012 PTF for XL C for AIX, V10.1