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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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022f5af61b
This is seen with gcc-9.0 compiler now which is fix that gcc community did recently https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52813 Signed-off-by: Khem Raj <raj.khem@gmail.com>
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* This test used to cause an assertion in the address space manager */
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__attribute__((noinline))
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static void inner(void)
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{
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/* Set registers to apriori known values. */
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__asm__ __volatile__(
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"movq $0x101, %%rax\n"
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"movq $0x102, %%rbx\n"
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"movq $0x103, %%rcx\n"
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"movq $0x104, %%rdx\n"
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"movq $0x105, %%rsi\n"
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"movq $0x106, %%rdi\n"
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"movq $0x107, %%r8\n"
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"movq $0x108, %%r9\n"
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"movq $0x109, %%r10\n"
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"movq $0x10a, %%r11\n"
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"movq $0x10b, %%r12\n"
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"movq $0x10c, %%r13\n"
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"movq $0x10d, %%r14\n"
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"movq $0x10e, %%r15\n"
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// not %rbp as mdb is then not able to reconstruct stack trace
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// Do change %rsp (to test a bogus stack pointer),
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// but don't add %rsp to the clobber list since gcc ignores it
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// and since gcc >= 9.0 errors about it
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// see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52813
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"movq $0x10f, %%rsp\n"
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"movq $0x1234, (%%rax)\n" // should cause SEGV here
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"ud2" // should never get here
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: // no output registers
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: // no input registers
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: "memory", "%rax", "%rbx", "%rcx", "%rdx", "%rsi", "%rdi",
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"%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15");
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}
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__attribute__((noinline))
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static void outer(void)
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{
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inner();
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}
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int main(int argc, const char *argv[])
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{
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outer();
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return 0;
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}
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