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dwarf: do not allocate in load_debug_frame (#72)

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load_debug_frame calls malloc() in a couple spots, use mmap via
GET_MEMORY instead.  These call paths are infrequent, and are never
freed.

Found by running tcmalloc unit tests on aarch64, when DEBUG_FRAME support is on.
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Dave Watson 2018-04-10 10:55:34 -07:00 committed by GitHub
parent c91974f30f
commit b5cbcaee13
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 2 deletions
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4
src/dwarf/Gfind_proc_info-lsb.c
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@ -119,7 +119,7 @@ load_debug_frame (const char *file, char **buf, size_t *bufsize, int is_local)
} }
*bufsize = shdr->sh_size; *bufsize = shdr->sh_size;
*buf = malloc (*bufsize); GET_MEMORY(*buf, *bufsize);
memcpy(*buf, shdr->sh_offset + ei.image, *bufsize); memcpy(*buf, shdr->sh_offset + ei.image, *bufsize);
@ -208,7 +208,7 @@ locate_debug_info (unw_addr_space_t as, unw_word_t addr, const char *dlname,
if (!err) if (!err)
{ {
fdesc = malloc (sizeof (struct unw_debug_frame_list)); GET_MEMORY(fdesc, sizeof (struct unw_debug_frame_list));
fdesc->start = start; fdesc->start = start;
fdesc->end = end; fdesc->end = end;