valgrind/valgrind-3.13.0-build-id-phdrs.patch

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diff --git a/coregrind/m_debuginfo/readelf.c b/coregrind/m_debuginfo/readelf.c
index 70c28e629..8bd3e049c 100644
--- a/coregrind/m_debuginfo/readelf.c
+++ b/coregrind/m_debuginfo/readelf.c
@@ -1137,7 +1137,11 @@ HChar* find_buildid(DiImage* img, Bool rel_ok, Bool search_shdrs)
ElfXX_Ehdr ehdr;
ML_(img_get)(&ehdr, img, 0, sizeof(ehdr));
- for (i = 0; i < ehdr.e_phnum; i++) {
+ /* Skip the phdrs when we have to search the shdrs. In separate
+ .debug files the phdrs might not be valid (they are a copy of
+ the main ELF file) and might trigger assertions when getting
+ image notes based on them. */
+ for (i = 0; !search_shdrs && i < ehdr.e_phnum; i++) {
ElfXX_Phdr phdr;
ML_(img_get)(&phdr, img,
ehdr.e_phoff + i * ehdr.e_phentsize, sizeof(phdr));