Segmentation fault with mpz_inp_raw on gcc45

[Vincent Lefevre]

On 2021-09-15 17:05:42 +0200, Paul Zimmermann wrote:
> sorry the test_dummy2.save is attached. It was generated by (under /bin/sh,
> not /bin/bash):
> 
> echo -e "\n\r\n\r# this is a comment line and should be ignored" > test_dummy2.save

I can reproduce the segfault only with a 32-bit ABI.

read(3, "-e \n\r\n\r# this is a comment line "..., 4096) = 54
mmap2(NULL, 224735232, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xea604000
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0xca604012} ---

If I understand correctly, the read system call comes from the initial
fread() to get the size, and the mmap2 comes from the allocation.

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