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APAR NUMBER: PJ29782 PRODUCT: TPF4 FUNCTIONAL AREA: ISO-C SUPPORT SHIPPED IN PUT: 19 ABSTRACT: This APAR provides support for the alloca() function on TPF. APAR CONTENTS: FEATURE TYPE STATUS NAME Base CHeader Changed include/stdlib.h Base DataMacro Changed macro/idscid.mac Base DataMacro Changed macro/idstca.mac Base Assembler Changed source/cp/base/ccuext.asm Base Copy Changed source/cp/base/cis140.cpy Base Copy Changed source/cp/base/cis240.cpy Base Assembler Changed source/rt/base/clmint.asm PREREQUISITE APARS: To be applied in order listed. Base CHeader Changed include/stdlib.h PJ26125(10) PJ26174(10) PJ26384(11) PJ27277(13) PJ27367(14) PJ27627(14) PJ29593(19) PJ29630(19) Base DataMacro Changed macro/idscid.mac PJ25632(09) PJ25981(10) PJ21337(12) Base DataMacro Changed macro/idstca.mac PJ26967(12) PJ27275(13) Base Assembler Changed source/cp/base/ccuext.asm PJ25807(10) PJ27019(13) PJ27525(14) PJ27530(14) PJ28649(17) Base Copy Changed source/cp/base/cis140.cpy PJ25632(09) PJ25981(10) Base Copy Changed source/cp/base/cis240.cpy PJ25632(09) PJ25459(09) PJ25948(10) PJ26312(11) PJ28649(17) Base Assembler Changed source/rt/base/clmint.asm PJ25425(09) PJ25632(09) PJ25696(10) PJ25807(10) PJ25983(10) PJ25981(10) PJ26008(10) PJ26575(11) PJ26804(12) PJ26967(12) PJ21337(12) PJ27252(13) PJ27277(13) PJ27383(13) PJ27440(14) PJ27557(14) PJ27563(14) PJ27977(15) PJ28235(16) PJ28649(17) PJ28765(17) PJ28943(17) PJ29121(18) PJ29299(18) COMMENTS: The alloca() function is a C/C++ function that obtains memory from the stack. There is no need to issue a corresponding free() function because the memory is freed when the stack frame is popped. SOLUTION: Preprocessor macro code was added to the stdlib.h header file to enable the alloca() function to run as a built-in function when called by a C/C++ program. Changes were made to macros IDSCID and IDSTCA, assembler segment CLMINT, control program copy segments CIS1 and CIS2, and control program CSECT CCUEXT to support a stack overflow routine for the alloca() function. If storage on the stack is not available when the alloca() function is called, the new stack overflow routine will be called to obtain the storage. DEPENDENCIES SEGMENTS TO BE ASSEMBLED OR COMPILED: CCISOC SEGMENTS TO BE LINK EDITED: ciso40.exe (Shipped in Tar File) cps040.exe COREQS: None. MIGRATION CONSIDERATIONS: None. UPDATED INFORMATION UNITS: TPF C/C++ Language Support User's Guide See your IBM representative if you need additional information. DOWNLOAD INSTRUCTIONS: http://www.ibm.com/software/htp/tpf/pages/maint.htm -- END APAR PJ29782
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