Rational Purify 使用及分析实例

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* This is occurring while in: main [pplusdemo.cpp:11] __libc_start_main [libc.so.6] _start [crt1.o] * Reading 1 byte from 0x80b45e0 in the heap. * Address 0x80b45e0 is at the beginning of a freed block of 4 bytes. * This block was allocated from: malloc [rtlib.o] operator new( unsigned) [libstdc++.so.5] operator new []( unsigned) [libstdc++.so.5] main [pplusdemo.cpp:5] __libc_start_main [libc.so.6] _start [crt1.o] * There have been 0 frees since this block was freed from: free [rtlib.o] _ZdLpV [libstdc++.so.5] main [pplusdemo.cpp:10] __libc_start_main [libc.so.6] _start [crt1.o] **** Purify instrumented ./pplusdemo (pid 30669) **** FMW: Free memory write: * This is occurring while in: main [pplusdemo.cpp:11] __libc_start_main [libc.so.6] _start [crt1.o] * Writing 1 byte to 0x80b45e0 in the heap. * Address 0x80b45e0 is at the beginning of a freed block of 4 bytes. * This block was allocated from: malloc [rtlib.o] operator new( unsigned) [libstdc++.so.5] operator new []( unsigned) [libstdc++.so.5] main [pplusdemo.cpp:5] __libc_start_main [libc.so.6] _start [crt1.o] * There have been 0 frees since this block was freed from: free [rtlib.o] _ZdLpV [libstdc++.so.5] main [pplusdemo.cpp:10] __libc_start_main [libc.so.6] _start [crt1.o] **** Purify instrumented ./pplusdemo (pid 30669) **** FUM: Freeing unallocated memory: * This is occurring while in: free [rtlib.o] _ZdLpV [libstdc++.so.5] main [pplusdemo.cpp:12] __libc_start_main [libc.so.6] _start [crt1.o] * Attempting to free block at 0x80b45e0 already freed. * This block was allocated from: malloc [rtlib.o] operator new( unsigned) [libstdc++.so.5] operator new []( unsigned) [libstdc++.so.5] main [pplusdemo.cpp:5] __libc_start_main [libc.so.6] _start [crt1.o] * There have been 1 frees since this block was freed from: free [rtlib.o] _ZdLpV [libstdc++.so.5] main [pplusdemo.cpp:10] __libc_start_main [libc.so.6] _start [crt1.o] **** Purify instrumented ./pplusdemo (pid 30669) **** Current file descriptors in use: 5 FIU: file descriptor 0: <stdin> FIU: file descriptor 1: <stdout> FIU: file descriptor 2: <stderr> FIU: file descriptor 26: <reserved for Purify internal use> FIU: file descriptor 27: <reserved for Purify internal use> **** Purify instrumented ./pplusdemo (pid 30669) **** Purify: Searching for all memory leaks... Memory leaked: 0 bytes (0%); potentially leaked: 0 bytes (0%) Purify Heap Analysis (combining suppressed and unsuppressed blocks) Blocks Bytes Leaked 0 0 Potentially Leaked 0 0 In-Use 0 0 ---------------------------------------- Total Allocated 0 0 **** Purify instrumented ./pplusdemo (pid 30669) **** * Program exited with status code 0. * 7 access errors, 7 total occurrences. * 0 bytes leaked. * 0 bytes potentially leaked. * Basic memory usage (including Purify overhead): 290012 code 152928 data/bss 6816 heap (peak use) 7800 stack

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