| commit | e90e76e15dee4b835b9b2cfd55c0c3f047bb6d76 | [log] [tgz] |
|---|---|---|
| author | ShashwathiNavada <shashwathinavada@gmail.com> | Thu Sep 04 12:08:19 2025 +0530 |
| committer | GitHub <noreply@github.com> | Thu Sep 04 12:08:19 2025 +0530 |
| tree | 398626b2e6e5d3b381cb5abb06a52c5f53d9c0fc | |
| parent | 99718444c4f665a8633d9a0a01cee1dadb3443c1 [diff] |
Trying to fix undefined symbol error caused by iterator variable (#141507)
When a mapper is declared with an iterator variable inside the map
clause, it results in unintended behavior due to the iterator being
implicitly created but left uninitialized.
Testcase:
```
typedef struct myvec{
size_t len;
double *data;
} myvec_t;
#pragma omp declare mapper(id:myvec_t v) map( iterator( iterator_variable=0:v.len), tofrom: v.data[iterator_variable])
int main()
{
int errors = 0;
myvec_t s;
#pragma omp target map(mapper(id), to:s)
{
}
return 0;
}
```
The error we get while compiling this is:
```
/usr/lib64/gcc/x86_64-suse-linux/14/../../../../x86_64-suse-linux/bin/ld: /tmp/test-f70647.o: in function `.omp_mapper._ZTS5myvec.id':
test.cpp:(.text+0x21a): undefined reference to `iterator_variable'
/llvm-project/install/bin/clang-linker-wrapper: error: 'ld' failed
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
```
This patch tries to fix this by initializing the iterator variable to a
null constant.
---------
Co-authored-by: Shashwathi N <nshashwa@pe31.hpc.amslabs.hpecorp.net>
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