Fix compiler warnings #51
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| CFLAGS="$CFLAGS -Werror" | ||
| CPPFLAGS="$CPPFLAGS -Werror" | ||
| CXXFLAGS="$CXXFLAGS -Werror" |
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i'd preferably like to make this possible to disable (like through a --disable-werror flag), but i'm not sure how to exclude this flag from $ac_unrecognized_opts.
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i see these lines a few times in what's |
| // FIXME: should be a readall. Check for return error code. | ||
| if (read(pipefd_out[0], &lh_info, sizeof lh_info) < sizeof lh_info) { | ||
| if ((unsigned long) read(pipefd_out[0], &lh_info, sizeof lh_info) | ||
| < sizeof lh_info) { |
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read can return -1, make it unsigned long will be 2^32 - 1 and passed this condition check, which is not correct.
| MPI_Request request; | ||
| MPI_Comm realComm = VIRTUAL_TO_REAL_COMM(comm); | ||
| int flag = 0; | ||
| // Consider removing the #if 0 segment below? |
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I don't know what's the purpose of the #if 0 bloc below, may keep it for debugging purposes.
But in C++, we usually define the variable right before we use it, so you can move this line to 145 if we don't want to remove that #if 0 block.
| MTCP_ASSERT(getMappedArea(&stack_area, "[stack]") == 1); | ||
| end1 = min(stack_area.endAddr - 4 * GB, highMemStart - 4 * GB); | ||
| end1 = (char *) min((uint64_t) stack_area.endAddr - 4 * GB, | ||
| (uint64_t) highMemStart - 4 * GB); |
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We should be very careful when performing minus on uint64_t, making sure the first is greater than the second.
| // If we want to test this, we can add code to do a trial mremap with a page | ||
| // before vvar and after vdso, and verify that we get an EFAULT. | ||
| // In May, 2020, on Cori and elsewhere, vvar is 3 pages and vdso is 2 pages. | ||
| char *vdsoStart = (char *)mygetauxval(environ, AT_SYSINFO_EHDR); |
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What is this for and why removing this line?
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this is a currently unused variable that was previously used when determining where to temporarily map the vdso/vvar segments to. there used to be a function mysetauxval that set AT_SYSINFO_EHDR so this line could read for it, but since that function is no longer in use we can remove this one as well.
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This pull request fixes some compiler warnings generated when building MANA on CentOS - some were caused by some of my older PRs.