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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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d91042c29d
Motivation for this change is similar to what has already been done in other leak-* tests. That is, call CLEAR_CALLER_SAVED_REGS (currently used only on PPC and MIPS arches) to clear temporary registers that might be holding pointers lost in a previously called function. This fixes memcheck/tests/leak-tree failure on some MIPS platforms. Patch by Aleksandar Rikalo. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@16173
73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include "leak.h"
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#include "../memcheck.h"
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/* We build this tree:
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A
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/ \
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B C
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/ \ / \
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D E F G
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Then we leak D and C-F-G.
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*/
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typedef
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struct _Node {
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struct _Node *l;
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struct _Node *r;
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// Padding ensures the structu is the same size on 32-bit and 64-bit
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// machines.
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char padding[16 - 2*sizeof(struct _Node*)];
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} Node;
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Node* mk(void)
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{
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Node *x = malloc(sizeof(Node));
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x->l = NULL;
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x->r = NULL;
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return x;
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}
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// This is a definite root.
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Node* t;
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void f(void)
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{
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// Building like this rather than "t = mk(mk(mk(NULL, NULL), ...)" seems to
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// help avoid leaving pointers on the stack to supposedly-leaked blocks.
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t = mk(); // A
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t->l = mk(); // B
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t->r = mk(); // C (48(16d,32i)/1 definitely leaked from here)
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t->l->l = mk(); // D (16/1 definitely leaked from here)
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t->l->r = mk(); // E
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t->r->l = mk(); // F
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t->r->r = mk(); // G
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// Sever B->D, leaking D
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t->l->l = NULL;
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// Sever A->C, leaking C-F-G
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t->r = NULL;
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}
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int main(void)
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{
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DECLARE_LEAK_COUNTERS;
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GET_INITIAL_LEAK_COUNTS;
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// See leak-cases.c for why we do the work in f().
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f();
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CLEAR_CALLER_SAVED_REGS;
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GET_FINAL_LEAK_COUNTS;
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PRINT_LEAK_COUNTS(stderr);
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return 0;
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}
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