derek.holloway
7502bf64a4
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184 lines
6.8 KiB
C
184 lines
6.8 KiB
C
// RUN: %clang_analyze_cc1 -analyzer-checker=core,unix.Malloc -verify %s
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#include "Inputs/system-header-simulator.h"
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typedef void* gpointer;
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typedef const void* gconstpointer;
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typedef unsigned long gsize;
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typedef unsigned int guint;
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gpointer g_malloc(gsize n_bytes);
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gpointer g_malloc0(gsize n_bytes);
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gpointer g_realloc(gpointer mem, gsize n_bytes);
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gpointer g_try_malloc(gsize n_bytes);
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gpointer g_try_malloc0(gsize n_bytes);
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gpointer g_try_realloc(gpointer mem, gsize n_bytes);
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gpointer g_malloc_n(gsize n_blocks, gsize n_block_bytes);
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gpointer g_malloc0_n(gsize n_blocks, gsize n_block_bytes);
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gpointer g_realloc_n(gpointer mem, gsize n_blocks, gsize n_block_bytes);
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gpointer g_try_malloc_n(gsize n_blocks, gsize n_block_bytes);
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gpointer g_try_malloc0_n(gsize n_blocks, gsize n_block_bytes);
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gpointer g_try_realloc_n(gpointer mem, gsize n_blocks, gsize n_block_bytes);
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void g_free(gpointer mem);
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gpointer g_memdup(gconstpointer mem, guint byte_size);
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gpointer g_strconcat(gconstpointer string1, ...);
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static const gsize n_bytes = 1024;
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void f1(void) {
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gpointer g1 = g_malloc(n_bytes);
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gpointer g2 = g_malloc0(n_bytes);
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g1 = g_realloc(g1, n_bytes * 2);
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gpointer g3 = g_try_malloc(n_bytes);
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gpointer g4 = g_try_malloc0(n_bytes);
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g3 = g_try_realloc(g3, n_bytes * 2);
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gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
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gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
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g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char));
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gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char));
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gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
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g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char));
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g_free(g1);
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g_free(g2);
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g_free(g2); // expected-warning{{Attempt to release already released memory}}
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}
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void f2(void) {
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gpointer g1 = g_malloc(n_bytes);
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gpointer g2 = g_malloc0(n_bytes);
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g1 = g_realloc(g1, n_bytes * 2);
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gpointer g3 = g_try_malloc(n_bytes);
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gpointer g4 = g_try_malloc0(n_bytes);
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g3 = g_try_realloc(g3, n_bytes * 2);
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gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
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gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
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g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char));
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gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char));
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gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
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g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char));
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g_free(g1);
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g_free(g2);
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g_free(g3);
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g3 = g_memdup(g3, n_bytes); // expected-warning{{Use of memory after it is released}}
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}
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void f3(void) {
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gpointer g1 = g_malloc(n_bytes);
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gpointer g2 = g_malloc0(n_bytes);
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g1 = g_realloc(g1, n_bytes * 2);
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gpointer g3 = g_try_malloc(n_bytes);
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gpointer g4 = g_try_malloc0(n_bytes);
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g3 = g_try_realloc(g3, n_bytes * 2); // expected-warning{{Potential leak of memory pointed to by 'g4'}}
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gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
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gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
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g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g6'}}
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gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g5'}}
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gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
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g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g8'}}
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g_free(g1); // expected-warning{{Potential leak of memory pointed to by 'g7'}}
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g_free(g2);
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g_free(g3);
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}
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void f4(void) {
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gpointer g1 = g_malloc(n_bytes);
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gpointer g2 = g_malloc0(n_bytes);
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g1 = g_realloc(g1, n_bytes * 2);
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gpointer g3 = g_try_malloc(n_bytes);
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gpointer g4 = g_try_malloc0(n_bytes);
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g3 = g_try_realloc(g3, n_bytes * 2);
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gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
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gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
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g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g6'}}
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gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g5'}}
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gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
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g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g8'}}
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g_free(g1); // expected-warning{{Potential leak of memory pointed to by 'g7'}}
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g_free(g2);
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g_free(g3);
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g_free(g4);
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}
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void f5(void) {
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gpointer g1 = g_malloc(n_bytes);
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gpointer g2 = g_malloc0(n_bytes);
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g1 = g_realloc(g1, n_bytes * 2);
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gpointer g3 = g_try_malloc(n_bytes);
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gpointer g4 = g_try_malloc0(n_bytes);
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g3 = g_try_realloc(g3, n_bytes * 2);
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gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
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gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
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g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g6'}}
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gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char));
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gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
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g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g8'}}
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g_free(g1); // expected-warning{{Potential leak of memory pointed to by 'g7'}}
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g_free(g2);
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g_free(g3);
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g_free(g4);
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g_free(g5);
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}
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void f6(void) {
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gpointer g1 = g_malloc(n_bytes);
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gpointer g2 = g_malloc0(n_bytes);
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g1 = g_realloc(g1, n_bytes * 2);
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gpointer g3 = g_try_malloc(n_bytes);
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gpointer g4 = g_try_malloc0(n_bytes);
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g3 = g_try_realloc(g3, n_bytes * 2);
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gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
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gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
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g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char));
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gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char));
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gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
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g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g8'}}
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g_free(g1); // expected-warning{{Potential leak of memory pointed to by 'g7'}}
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g_free(g2);
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g_free(g3);
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g_free(g4);
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g_free(g5);
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g_free(g6);
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}
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void f7(void) {
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gpointer g1 = g_malloc(n_bytes);
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gpointer g2 = g_malloc0(n_bytes);
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g1 = g_realloc(g1, n_bytes * 2);
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gpointer g3 = g_try_malloc(n_bytes);
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gpointer g4 = g_try_malloc0(n_bytes);
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g3 = g_try_realloc(g3, n_bytes * 2);
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gpointer g5 = g_malloc_n(n_bytes, sizeof(char));
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gpointer g6 = g_malloc0_n(n_bytes, sizeof(char));
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g5 = g_realloc_n(g5, n_bytes * 2, sizeof(char));
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gpointer g7 = g_try_malloc_n(n_bytes, sizeof(char));
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gpointer g8 = g_try_malloc0_n(n_bytes, sizeof(char));
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g7 = g_try_realloc_n(g7, n_bytes * 2, sizeof(char)); // expected-warning{{Potential leak of memory pointed to by 'g8'}}
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g_free(g1);
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g_free(g2);
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g_free(g3);
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g_free(g4);
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g_free(g5);
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g_free(g6);
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g_free(g7);
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}
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void f8(void) {
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typedef struct {
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gpointer str;
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} test_struct;
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test_struct *s1 = (test_struct *)g_malloc0(sizeof(test_struct));
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test_struct *s2 = (test_struct *)g_memdup(s1, sizeof(test_struct));
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gpointer str = g_strconcat("text", s1->str, s2->str, NULL); // no-warning
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g_free(str);
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g_free(s2);
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g_free(s1);
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}
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