mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-21 08:39:46 +08:00
9c319b134a
This addresses a type-punning warning in gcc:
gcc11 warns about one of the strict aliasing violations:
d4util.h:44:7: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
44 | *((unsigned int*)ip) = u.i; \
| ~^~~~~~~~~~~~~~~~~~
d4dump.c:51:13: note: in expansion of macro 'swapinline32'
51 | swapinline32(v.u64);
| ^~~~~~~~~~~~
Signed-off-by: Egbert Eich <eich@suse.com>
110 lines
2.8 KiB
C
110 lines
2.8 KiB
C
/* Copyright 2018, UCAR/Unidata.
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See the COPYRIGHT file for more information.
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*/
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#include "d4includes.h"
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/*
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Provide a simple dump of binary data
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*/
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/**************************************************/
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void
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NCD4_dumpbytes(size_t size, const void* data0, int swap)
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{
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size_t extended;
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void* data;
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char* pos;
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size_t i;
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extended = size + 8;
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data = calloc(1,extended); /* provide some space to simplify the code */
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memcpy(data,data0,size);
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for(i=0,pos=data;i<size; pos++,i++) {
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struct {
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unsigned char u8[1];
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signed char i8[1];
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unsigned short u16[1];
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short i16[1];
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unsigned int u32[1];
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int i32[1];
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unsigned long long u64[1];
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long long i64[1];
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float f32[1];
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double f64[1];
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char s[8];
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} v;
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v.s[0] = *((char*)pos);
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v.s[1] = '\0';
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v.u8[0] = *((unsigned char*)pos);
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v.i8[0] = *((signed char*)pos);
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v.u16[0] = *((unsigned short*)pos);
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v.i16[0] = *((short*)pos);
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v.u32[0] = *((unsigned int*)pos);
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v.i32[0] = *((int*)pos);
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v.u64[0] = *((unsigned long long*)pos);
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v.i64[0] = *((long long*)pos);
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if(swap) {
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swapinline16(v.u16);
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swapinline32(v.u32);
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swapinline64(v.u64);
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swapinline16(v.i16);
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swapinline32(v.i32);
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swapinline64(v.i64);
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swapinline32(v.f32);
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swapinline64(v.f64);
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}
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if(v.s[0] == '\r') strcpy(v.s,"\\r");
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else if(v.s[0] == '\n') strcpy(v.s,"\\n");
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else if(v.s[0] < ' ' || v.s[0] >= 0x7f) v.s[0] = '?';
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fprintf(stderr,"[%03lu] %02x %03u %4d", (unsigned long)i, v.u8[0], v.u8[0], v.i8[0]);
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fprintf(stderr," 0x%08x %12u %13d", v.u32[0], v.u32[0], v.i32[0]);
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fprintf(stderr," 0x%04x %06u %7d", v.u16[0], v.u16[0], v.i16[0]);
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fprintf(stderr," '%s'\n",v.s);
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fflush(stderr);
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}
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}
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void
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NCD4_tagdump(size_t size, const void* data0, int swap, const char* tag)
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{
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fprintf(stderr,"++++++++++ %s ++++++++++\n",tag);
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NCD4_dumpbytes(size,data0,swap);
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fprintf(stderr,"++++++++++ %s ++++++++++\n",tag);
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fflush(stderr);
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}
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/* Dump the variables in a group */
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void
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NCD4_dumpvars(NCD4node* group)
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{
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int i;
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fprintf(stderr,"%s.vars:\n",group->name);
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for(i=0;i<nclistlength(group->vars);i++) {
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NCD4node* var = (NCD4node*)nclistget(group->vars,i);
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NCD4node* type;
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switch (var->subsort) {
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default:
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type = var->basetype;
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fprintf(stderr,"<%s name=\"%s\"/>\n",type->name,var->name);
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break;
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case NC_STRUCT:
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fprintf(stderr,"<%s name=\"%s\"/>\n","Struct",var->name);
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break;
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case NC_SEQ:
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fprintf(stderr,"<%s name=\"%s\"/>\n","Sequence",var->name);
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break;
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}
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}
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fflush(stderr);
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}
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union ATOMICS*
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NCD4_dumpatomic(NCD4node* var, void* data)
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{
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union ATOMICS* p = (union ATOMICS*)data;
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return p;
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}
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