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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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c2a48e3498
it zeroes out that area (as a result of one of the mmaps) and the program consequently goes into an infinite loop. Change the map sizes to just one page to avoid that. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5616
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
#include <sys/mman.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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/* The quick sanity check of Memcheck (and other tools with shadow memory)
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relies on the first 64KB of memory never being used. So our mmap()
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refuses to touch this area. This program tests for that.
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[actually, no longer true, these all now succeed.] */
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int main(void)
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{
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/* mmap(0x0, ... FIXED) should fail */
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int* m = mmap(0x0, 4096, PROT_READ|PROT_WRITE,
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MAP_PRIVATE|MAP_ANON|MAP_FIXED, -1, 0);
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if (m != (int*)-1)
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printf("succeeded?!\n");
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/* mmap(0x1000, ... FIXED) should fail */
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m = mmap((void*)0x1000, 4096, PROT_READ|PROT_WRITE,
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MAP_PRIVATE|MAP_ANON|MAP_FIXED, -1, 0);
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if (m != (int*)-1)
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printf("succeeded?!\n");
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/* mmap(0xa000, ... FIXED) should fail */
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m = mmap((void*)0xa000, 4096, PROT_READ|PROT_WRITE,
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MAP_PRIVATE|MAP_ANON|MAP_FIXED, -1, 0);
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if (m != (int*)-1)
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printf("succeeded?!\n");
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/* mmap(0x10000, ... FIXED) should fail */
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m = mmap((void*)0x10000, 4096, PROT_READ|PROT_WRITE,
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MAP_PRIVATE|MAP_ANON|MAP_FIXED, -1, 0);
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if (m == (int*)-1)
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printf("failed?!\n");
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return 0;
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}
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