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269ff33844
gcc11 made assumptions about optimization based on strict aliasing rules
that led to this code malfunction, which was caught by the test suite.
gcc printed out a warning whose meaning was not immediately obvious:
ncx.c: In function 'ncx_putn_float_schar':
ncx.c:272:20: warning: 'xx' may be used uninitialized [-Wmaybe-uninitialized]
272 | uint32_t tmp = *(uint32_t*)src;
| ^~~~~~~~~~~~~~~
ncx.c:3512:14: note: 'xx' was declared here
3512 | ix_float xx = NC_FILL_FLOAT;
| ^~
Due to optimization and inlining, the initialization of this variable was
lost.
Signed-off-by: Egbert Eich <eich@suse.com>
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|---|---|---|
| .. | ||
| attr.m4 | ||
| CMakeLists.txt | ||
| depend | ||
| dim.c | ||
| ffio.c | ||
| httpio.c | ||
| lookup3.c | ||
| Makefile.am | ||
| memio.c | ||
| mmapio.c | ||
| nc3dispatch.c | ||
| nc3internal.c | ||
| ncFile.c | ||
| ncio.c | ||
| ncio.h | ||
| ncstdio.c | ||
| ncstdio.h | ||
| ncx_cray.c | ||
| ncx.h | ||
| ncx.m4 | ||
| posixio.c | ||
| pstdint.h | ||
| putget.m4 | ||
| t_ncio.c | ||
| t_ncio.in | ||
| t_ncxx.m4 | ||
| test_nc.sav | ||
| v1hpg.c | ||
| var.c | ||
| winceio.c | ||
| XGetopt.c | ||