https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86022
Bug ID: 86022
Summary: TCB size calculated in ThreadDescriptorSize() is wrong
for glibc-2.14
Product: gcc
Version: 8.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: b7.10110111 at gmail dot com
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at
gcc dot gnu.org
Target Milestone: ---
In ThreadDescriptorSize(), I currently see:
else if (minor <= 13)
val = FIRST_32_SECOND_64(1168, 2304);
else
val = FIRST_32_SECOND_64(1216, 2304);
This leads to assertion failure on glibc-2.14, with the same message as in bug
60038. Actual values for glibc 2.14 are the same as for 2.13: 1168 for i386 and
2304 for x86_64.
I checked this by appending the following to glibc-2.14.1/nptl/descr.h:
typedef int TCB_SIZE_2304[sizeof(struct pthread)==2304 ? -1 : 1];
typedef int TCB_SIZE_1168[sizeof(struct pthread)==1168 ? -1 : 1];
and getting corresponding error when compiling glibc on a 32-bit and on a
64-bit x86 Kubuntu machines.
I suppose the fix should be to change "minor <= 13" to "minor <= 14".
